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qubes-linux-kernel/patches.xen/xen3-patch-2.6.22
Joanna Rutkowska d1298d1dfb Keeps patches unpacked for easier history browsing
2010-07-07 13:12:45 +02:00

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From: www.kernel.org
Subject: Update to 2.6.22
Patch-mainline: 2.6.22
Automatically created from "patches.kernel.org/patch-2.6.22" by xen-port-patches.py
Acked-by: jbeulich@novell.com
--- head-2010-05-25.orig/arch/x86/Kconfig 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/Kconfig 2010-03-24 15:09:15.000000000 +0100
@@ -1709,7 +1709,7 @@ config PHYSICAL_START
config RELOCATABLE
bool "Build a relocatable kernel"
- depends on !X86_XEN
+ depends on !XEN
default y
---help---
This builds a kernel image that retains relocation information
@@ -1769,7 +1769,6 @@ config COMPAT_VDSO
def_bool y
prompt "Compat VDSO support"
depends on X86_32 || IA32_EMULATION
- depends on !X86_XEN
---help---
Map the 32-bit VDSO to the predictable old-style address too.
@@ -1992,6 +1991,7 @@ config PCI
bool "PCI support"
default y
select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
+ select ARCH_SUPPORTS_MSI if (XEN_UNPRIVILEGED_GUEST && XEN_PCIDEV_FRONTEND)
---help---
Find out whether you have a PCI motherboard. PCI is the name of a
bus system, i.e. the way the CPU talks to the other stuff inside
--- head-2010-05-25.orig/arch/x86/kernel/Makefile 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/Makefile 2010-03-24 15:09:15.000000000 +0100
@@ -141,4 +141,4 @@ endif
disabled-obj-$(CONFIG_XEN) := early-quirks.o hpet.o i8253.o i8259_$(BITS).o reboot.o \
smpboot_$(BITS).o tsc_$(BITS).o tsc_sync.o
disabled-obj-$(CONFIG_XEN_UNPRIVILEGED_GUEST) += mpparse_64.o
-%/head_$(BITS).o %/head_$(BITS).s: $(if $(CONFIG_XEN),EXTRA_AFLAGS,dummy) :=
+%/head_64.o %/head_64.s: $(if $(CONFIG_XEN),EXTRA_AFLAGS,dummy) :=
--- head-2010-05-25.orig/arch/x86/kernel/apic/apic-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/apic/apic-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -19,7 +19,6 @@
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/mc146818rtc.h>
#include <linux/kernel_stat.h>
--- head-2010-05-25.orig/arch/x86/kernel/asm-offsets_32.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/asm-offsets_32.c 2010-03-24 15:09:15.000000000 +0100
@@ -111,11 +111,6 @@ void foo(void)
OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
-#ifdef CONFIG_XEN
- BLANK();
- OFFSET(XEN_START_mfn_list, start_info, mfn_list);
-#endif
-
#ifdef CONFIG_PARAVIRT
BLANK();
OFFSET(PARAVIRT_enabled, pv_info, paravirt_enabled);
--- head-2010-05-25.orig/arch/x86/kernel/cpu/common-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/cpu/common-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -22,16 +22,40 @@
#define phys_pkg_id(a,b) a
#endif
#endif
-#include <asm/pda.h>
#include <asm/hypervisor.h>
#include "cpu.h"
-DEFINE_PER_CPU(struct Xgt_desc_struct, cpu_gdt_descr);
-EXPORT_PER_CPU_SYMBOL(cpu_gdt_descr);
+DEFINE_PER_CPU(struct gdt_page, gdt_page) = { .gdt = {
+ [GDT_ENTRY_KERNEL_CS] = { 0x0000ffff, 0x00cf9a00 },
+ [GDT_ENTRY_KERNEL_DS] = { 0x0000ffff, 0x00cf9200 },
+ [GDT_ENTRY_DEFAULT_USER_CS] = { 0x0000ffff, 0x00cffa00 },
+ [GDT_ENTRY_DEFAULT_USER_DS] = { 0x0000ffff, 0x00cff200 },
+#ifndef CONFIG_XEN
+ /*
+ * Segments used for calling PnP BIOS have byte granularity.
+ * They code segments and data segments have fixed 64k limits,
+ * the transfer segment sizes are set at run time.
+ */
+ [GDT_ENTRY_PNPBIOS_CS32] = { 0x0000ffff, 0x00409a00 },/* 32-bit code */
+ [GDT_ENTRY_PNPBIOS_CS16] = { 0x0000ffff, 0x00009a00 },/* 16-bit code */
+ [GDT_ENTRY_PNPBIOS_DS] = { 0x0000ffff, 0x00009200 }, /* 16-bit data */
+ [GDT_ENTRY_PNPBIOS_TS1] = { 0x00000000, 0x00009200 },/* 16-bit data */
+ [GDT_ENTRY_PNPBIOS_TS2] = { 0x00000000, 0x00009200 },/* 16-bit data */
+ /*
+ * The APM segments have byte granularity and their bases
+ * are set at run time. All have 64k limits.
+ */
+ [GDT_ENTRY_APMBIOS_BASE] = { 0x0000ffff, 0x00409a00 },/* 32-bit code */
+ /* 16-bit code */
+ [GDT_ENTRY_APMBIOS_BASE+1] = { 0x0000ffff, 0x00009a00 },
+ [GDT_ENTRY_APMBIOS_BASE+2] = { 0x0000ffff, 0x00409200 }, /* data */
-struct i386_pda *_cpu_pda[NR_CPUS] __read_mostly;
-EXPORT_SYMBOL(_cpu_pda);
+ [GDT_ENTRY_ESPFIX_SS] = { 0x00000000, 0x00c09200 },
+#endif
+ [GDT_ENTRY_PERCPU] = { 0x00000000, 0x00000000 },
+} };
+EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
static int cachesize_override __cpuinitdata = -1;
static int disable_x86_fxsr __cpuinitdata;
@@ -375,7 +399,7 @@ __setup("serialnumber", x86_serial_nr_se
/*
* This does the hard work of actually picking apart the CPU stuff...
*/
-void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
+static void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
{
int i;
@@ -486,15 +510,22 @@ void __cpuinit identify_cpu(struct cpuin
/* Init Machine Check Exception if available. */
mcheck_init(c);
+}
- if (c == &boot_cpu_data)
- sysenter_setup();
+void __init identify_boot_cpu(void)
+{
+ identify_cpu(&boot_cpu_data);
+ sysenter_setup();
enable_sep_cpu();
+ mtrr_bp_init();
+}
- if (c == &boot_cpu_data)
- mtrr_bp_init();
- else
- mtrr_ap_init();
+void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c)
+{
+ BUG_ON(c == &boot_cpu_data);
+ identify_cpu(c);
+ enable_sep_cpu();
+ mtrr_ap_init();
}
#ifdef CONFIG_X86_HT
@@ -608,136 +639,47 @@ void __init early_cpu_init(void)
#endif
}
-/* Make sure %gs is initialized properly in idle threads */
+/* Make sure %fs is initialized properly in idle threads */
struct pt_regs * __devinit idle_regs(struct pt_regs *regs)
{
memset(regs, 0, sizeof(struct pt_regs));
- regs->xfs = __KERNEL_PDA;
+ regs->xfs = __KERNEL_PERCPU;
return regs;
}
-static __cpuinit int alloc_gdt(int cpu)
-{
- struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
- struct desc_struct *gdt;
- struct i386_pda *pda;
-
- gdt = (struct desc_struct *)cpu_gdt_descr->address;
- pda = cpu_pda(cpu);
-
- /*
- * This is a horrible hack to allocate the GDT. The problem
- * is that cpu_init() is called really early for the boot CPU
- * (and hence needs bootmem) but much later for the secondary
- * CPUs, when bootmem will have gone away
- */
- if (NODE_DATA(0)->bdata->node_bootmem_map) {
- BUG_ON(gdt != NULL || pda != NULL);
-
- gdt = alloc_bootmem_pages(PAGE_SIZE);
- pda = alloc_bootmem(sizeof(*pda));
- /* alloc_bootmem(_pages) panics on failure, so no check */
-
- memset(gdt, 0, PAGE_SIZE);
- memset(pda, 0, sizeof(*pda));
- } else {
- /* GDT and PDA might already have been allocated if
- this is a CPU hotplug re-insertion. */
- if (gdt == NULL)
- gdt = (struct desc_struct *)get_zeroed_page(GFP_KERNEL);
-
- if (pda == NULL)
- pda = kmalloc_node(sizeof(*pda), GFP_KERNEL, cpu_to_node(cpu));
-
- if (unlikely(!gdt || !pda)) {
- free_pages((unsigned long)gdt, 0);
- kfree(pda);
- return 0;
- }
- }
-
- cpu_gdt_descr->address = (unsigned long)gdt;
- cpu_pda(cpu) = pda;
-
- return 1;
-}
-
-/* Initial PDA used by boot CPU */
-struct i386_pda boot_pda = {
- ._pda = &boot_pda,
- .cpu_number = 0,
- .pcurrent = &init_task,
-};
-
-static inline void set_kernel_fs(void)
-{
- /* Set %fs for this CPU's PDA. Memory clobber is to create a
- barrier with respect to any PDA operations, so the compiler
- doesn't move any before here. */
- asm volatile ("mov %0, %%fs" : : "r" (__KERNEL_PDA) : "memory");
-}
-
-/* Initialize the CPU's GDT and PDA. The boot CPU does this for
- itself, but secondaries find this done for them. */
-__cpuinit int init_gdt(int cpu, struct task_struct *idle)
-{
- struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
- struct desc_struct *gdt;
- struct i386_pda *pda;
-
- /* For non-boot CPUs, the GDT and PDA should already have been
- allocated. */
- if (!alloc_gdt(cpu)) {
- printk(KERN_CRIT "CPU%d failed to allocate GDT or PDA\n", cpu);
- return 0;
- }
-
- gdt = (struct desc_struct *)cpu_gdt_descr->address;
- pda = cpu_pda(cpu);
-
- BUG_ON(gdt == NULL || pda == NULL);
-
- /*
- * Initialize the per-CPU GDT with the boot GDT,
- * and set up the GDT descriptor:
- */
- memcpy(gdt, cpu_gdt_table, GDT_SIZE);
- cpu_gdt_descr->size = GDT_SIZE - 1;
-
- pack_descriptor((u32 *)&gdt[GDT_ENTRY_PDA].a,
- (u32 *)&gdt[GDT_ENTRY_PDA].b,
- (unsigned long)pda, sizeof(*pda) - 1,
- 0x80 | DESCTYPE_S | 0x2, 0); /* present read-write data segment */
-
- memset(pda, 0, sizeof(*pda));
- pda->_pda = pda;
- pda->cpu_number = cpu;
- pda->pcurrent = idle;
-
- return 1;
-}
-
-void __cpuinit cpu_set_gdt(int cpu)
+/* Current gdt points %fs at the "master" per-cpu area: after this,
+ * it's on the real one. */
+void switch_to_new_gdt(void)
{
- struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
+ struct Xgt_desc_struct gdt_descr;
unsigned long va, frames[16];
int f;
- for (va = cpu_gdt_descr->address, f = 0;
- va < cpu_gdt_descr->address + cpu_gdt_descr->size;
+ gdt_descr.address = (long)get_cpu_gdt_table(smp_processor_id());
+ gdt_descr.size = GDT_SIZE - 1;
+
+ for (va = gdt_descr.address, f = 0;
+ va < gdt_descr.address + gdt_descr.size;
va += PAGE_SIZE, f++) {
frames[f] = virt_to_mfn(va);
make_lowmem_page_readonly(
(void *)va, XENFEAT_writable_descriptor_tables);
}
- BUG_ON(HYPERVISOR_set_gdt(frames, (cpu_gdt_descr->size + 1) / 8));
-
- set_kernel_fs();
+ if (HYPERVISOR_set_gdt(frames, (gdt_descr.size + 1) / 8))
+ BUG();
+ asm("mov %0, %%fs" : : "r" (__KERNEL_PERCPU) : "memory");
}
-/* Common CPU init for both boot and secondary CPUs */
-static void __cpuinit _cpu_init(int cpu, struct task_struct *curr)
+/*
+ * cpu_init() initializes state that is per-CPU. Some data is already
+ * initialized (naturally) in the bootstrap process, such as the GDT
+ * and IDT. We reload them nevertheless, this function acts as a
+ * 'CPU state barrier', nothing should get across.
+ */
+void __cpuinit cpu_init(void)
{
+ int cpu = smp_processor_id();
+ struct task_struct *curr = current;
#ifndef CONFIG_X86_NO_TSS
struct tss_struct * t = &per_cpu(init_tss, cpu);
#endif
@@ -759,6 +701,8 @@ static void __cpuinit _cpu_init(int cpu,
set_in_cr4(X86_CR4_TSD);
}
+ switch_to_new_gdt();
+
/*
* Set up and load the per-CPU TSS and LDT
*/
@@ -796,38 +740,6 @@ static void __cpuinit _cpu_init(int cpu,
mxcsr_feature_mask_init();
}
-/* Entrypoint to initialize secondary CPU */
-void __cpuinit secondary_cpu_init(void)
-{
- int cpu = smp_processor_id();
- struct task_struct *curr = current;
-
- _cpu_init(cpu, curr);
-}
-
-/*
- * cpu_init() initializes state that is per-CPU. Some data is already
- * initialized (naturally) in the bootstrap process, such as the GDT
- * and IDT. We reload them nevertheless, this function acts as a
- * 'CPU state barrier', nothing should get across.
- */
-void __cpuinit cpu_init(void)
-{
- int cpu = smp_processor_id();
- struct task_struct *curr = current;
-
- /* Set up the real GDT and PDA, so we can transition from the
- boot versions. */
- if (!init_gdt(cpu, curr)) {
- /* failed to allocate something; not much we can do... */
- for (;;)
- local_irq_enable();
- }
-
- cpu_set_gdt(cpu);
- _cpu_init(cpu, curr);
-}
-
#ifdef CONFIG_HOTPLUG_CPU
void __cpuinit cpu_uninit(void)
{
--- head-2010-05-25.orig/arch/x86/kernel/cpu/mtrr/main-xen.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/cpu/mtrr/main-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -167,7 +167,7 @@ mtrr_del(int reg, unsigned long base, un
EXPORT_SYMBOL(mtrr_add);
EXPORT_SYMBOL(mtrr_del);
-void __init mtrr_bp_init(void)
+__init void mtrr_bp_init(void)
{
}
--- head-2010-05-25.orig/arch/x86/kernel/e820_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/e820_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -162,26 +162,27 @@ static struct resource standard_io_resou
static int __init romsignature(const unsigned char *rom)
{
+ const unsigned short * const ptr = (const unsigned short *)rom;
unsigned short sig;
- return probe_kernel_address((const unsigned short *)rom, sig) == 0 &&
- sig == ROMSIGNATURE;
+ return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
}
-static int __init romchecksum(unsigned char *rom, unsigned long length)
+static int __init romchecksum(const unsigned char *rom, unsigned long length)
{
- unsigned char sum;
+ unsigned char sum, c;
- for (sum = 0; length; length--)
- sum += *rom++;
- return sum == 0;
+ for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
+ sum += c;
+ return !length && !sum;
}
static void __init probe_roms(void)
{
+ const unsigned char *rom;
unsigned long start, length, upper;
- unsigned char *rom;
- int i;
+ unsigned char c;
+ int i;
#ifdef CONFIG_XEN
/* Nothing to do if not running in dom0. */
@@ -198,8 +199,11 @@ static void __init probe_roms(void)
video_rom_resource.start = start;
+ if (probe_kernel_address(rom + 2, c) != 0)
+ continue;
+
/* 0 < length <= 0x7f * 512, historically */
- length = rom[2] * 512;
+ length = c * 512;
/* if checksum okay, trust length byte */
if (length && romchecksum(rom, length))
@@ -233,8 +237,11 @@ static void __init probe_roms(void)
if (!romsignature(rom))
continue;
+ if (probe_kernel_address(rom + 2, c) != 0)
+ continue;
+
/* 0 < length <= 0x7f * 512, historically */
- length = rom[2] * 512;
+ length = c * 512;
/* but accept any length that fits if checksum okay */
if (!length || start + length > upper || !romchecksum(rom, length))
@@ -249,7 +256,7 @@ static void __init probe_roms(void)
}
#ifdef CONFIG_XEN
-static struct e820map machine_e820 __initdata;
+static struct e820map machine_e820;
#define e820 machine_e820
#endif
@@ -409,10 +416,8 @@ int __init sanitize_e820_map(struct e820
____________________33__
______________________4_
*/
- printk("sanitize start\n");
/* if there's only one memory region, don't bother */
if (*pnr_map < 2) {
- printk("sanitize bail 0\n");
return -1;
}
@@ -421,7 +426,6 @@ int __init sanitize_e820_map(struct e820
/* bail out if we find any unreasonable addresses in bios map */
for (i=0; i<old_nr; i++)
if (biosmap[i].addr + biosmap[i].size < biosmap[i].addr) {
- printk("sanitize bail 1\n");
return -1;
}
@@ -517,7 +521,6 @@ int __init sanitize_e820_map(struct e820
memcpy(biosmap, new_bios, new_nr*sizeof(struct e820entry));
*pnr_map = new_nr;
- printk("sanitize end\n");
return 0;
}
@@ -552,7 +555,6 @@ int __init copy_e820_map(struct e820entr
unsigned long long size = biosmap->size;
unsigned long long end = start + size;
unsigned long type = biosmap->type;
- printk("copy_e820_map() start: %016Lx size: %016Lx end: %016Lx type: %ld\n", start, size, end, type);
/* Overflow in 64 bits? Ignore the memory map. */
if (start > end)
@@ -564,17 +566,11 @@ int __init copy_e820_map(struct e820entr
* Not right. Fix it up.
*/
if (type == E820_RAM) {
- printk("copy_e820_map() type is E820_RAM\n");
if (start < 0x100000ULL && end > 0xA0000ULL) {
- printk("copy_e820_map() lies in range...\n");
- if (start < 0xA0000ULL) {
- printk("copy_e820_map() start < 0xA0000ULL\n");
+ if (start < 0xA0000ULL)
add_memory_region(start, 0xA0000ULL-start, type);
- }
- if (end <= 0x100000ULL) {
- printk("copy_e820_map() end <= 0x100000ULL\n");
+ if (end <= 0x100000ULL)
continue;
- }
start = 0x100000ULL;
size = end - start;
}
--- head-2010-05-25.orig/arch/x86/kernel/entry_32-xen.S 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/entry_32-xen.S 2010-03-24 15:09:15.000000000 +0100
@@ -15,7 +15,7 @@
* I changed all the .align's to 4 (16 byte alignment), as that's faster
* on a 486.
*
- * Stack layout in 'ret_from_system_call':
+ * Stack layout in 'syscall_exit':
* ptrace needs to have all regs on the stack.
* if the order here is changed, it needs to be
* updated in fork.c:copy_process, signal.c:do_signal,
@@ -135,7 +135,7 @@ NMI_MASK = 0x80000000
movl $(__USER_DS), %edx; \
movl %edx, %ds; \
movl %edx, %es; \
- movl $(__KERNEL_PDA), %edx; \
+ movl $(__KERNEL_PERCPU), %edx; \
movl %edx, %fs
#define RESTORE_INT_REGS \
@@ -308,16 +308,12 @@ sysenter_past_esp:
pushl $(__USER_CS)
CFI_ADJUST_CFA_OFFSET 4
/*CFI_REL_OFFSET cs, 0*/
-#ifndef CONFIG_COMPAT_VDSO
/*
* Push current_thread_info()->sysenter_return to the stack.
* A tiny bit of offset fixup is necessary - 4*4 means the 4 words
* pushed above; +8 corresponds to copy_thread's esp0 setting.
*/
pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
-#else
- pushl $SYSENTER_RETURN
-#endif
CFI_ADJUST_CFA_OFFSET 4
CFI_REL_OFFSET eip, 0
@@ -345,7 +341,7 @@ sysenter_past_esp:
jae syscall_badsys
call *sys_call_table(,%eax,4)
movl %eax,PT_EAX(%esp)
- DISABLE_INTERRUPTS(CLBR_ECX|CLBR_EDX)
+ DISABLE_INTERRUPTS(CLBR_ANY)
TRACE_IRQS_OFF
movl TI_flags(%ebp), %ecx
testw $_TIF_ALLWORK_MASK, %cx
@@ -400,10 +396,6 @@ ENTRY(system_call)
CFI_ADJUST_CFA_OFFSET 4
SAVE_ALL
GET_THREAD_INFO(%ebp)
- testl $TF_MASK,PT_EFLAGS(%esp)
- jz no_singlestep
- orl $_TIF_SINGLESTEP,TI_flags(%ebp)
-no_singlestep:
# system call tracing in operation / emulation
/* Note, _TIF_SECCOMP is bit number 8, and so it needs testw and not testb */
testw $(_TIF_SYSCALL_EMU|_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
@@ -418,6 +410,10 @@ syscall_exit:
# setting need_resched or sigpending
# between sampling and the iret
TRACE_IRQS_OFF
+ testl $TF_MASK,PT_EFLAGS(%esp) # If tracing set singlestep flag on exit
+ jz no_singlestep
+ orl $_TIF_SINGLESTEP,TI_flags(%ebp)
+no_singlestep:
movl TI_flags(%ebp), %ecx
testw $_TIF_ALLWORK_MASK, %cx # current->work
jne syscall_exit_work
@@ -635,9 +631,7 @@ END(syscall_badsys)
#ifndef CONFIG_XEN
#define FIXUP_ESPFIX_STACK \
/* since we are on a wrong stack, we cant make it a C code :( */ \
- movl %fs:PDA_cpu, %ebx; \
- PER_CPU(cpu_gdt_descr, %ebx); \
- movl GDS_address(%ebx), %ebx; \
+ PER_CPU(gdt_page, %ebx); \
GET_DESC_BASE(GDT_ENTRY_ESPFIX_SS, %ebx, %eax, %ax, %al, %ah); \
addl %esp, %eax; \
pushl $__KERNEL_DS; \
@@ -710,7 +704,7 @@ ENTRY(name) \
SAVE_ALL; \
TRACE_IRQS_OFF \
movl %esp,%eax; \
- call smp_/**/name; \
+ call smp_##name; \
jmp ret_from_intr; \
CFI_ENDPROC; \
ENDPROC(name)
@@ -718,10 +712,6 @@ ENDPROC(name)
/* The include is where all of the SMP etc. interrupts come from */
#include "entry_arch.h"
-/* This alternate entry is needed because we hijack the apic LVTT */
-#if defined(CONFIG_VMI) && defined(CONFIG_X86_LOCAL_APIC)
-BUILD_INTERRUPT(apic_vmi_timer_interrupt,LOCAL_TIMER_VECTOR)
-#endif
#else
#define UNWIND_ESPFIX_STACK
#endif
@@ -764,7 +754,7 @@ error_code:
pushl %fs
CFI_ADJUST_CFA_OFFSET 4
/*CFI_REL_OFFSET fs, 0*/
- movl $(__KERNEL_PDA), %ecx
+ movl $(__KERNEL_PERCPU), %ecx
movl %ecx, %fs
UNWIND_ESPFIX_STACK
popl %ecx
--- head-2010-05-25.orig/arch/x86/kernel/head_32-xen.S 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/head_32-xen.S 2010-03-24 15:09:15.000000000 +0100
@@ -37,7 +37,8 @@ ENTRY(startup_32)
/* Set up the stack pointer */
movl $(init_thread_union+THREAD_SIZE),%esp
- call setup_pda
+ movl %ss,%eax
+ movl %eax,%fs # gets reset once there's real percpu
/* get vendor info */
xorl %eax,%eax # call CPUID with 0 -> return vendor ID
@@ -64,55 +65,11 @@ ENTRY(startup_32)
xorl %eax,%eax # Clear GS
movl %eax,%gs
- movl $(__KERNEL_PDA),%eax
- mov %eax,%fs
-
cld # gcc2 wants the direction flag cleared at all times
pushl $0 # fake return address for unwinder
jmp start_kernel
-/*
- * Point the GDT at this CPU's PDA. This will be
- * cpu_gdt_table and boot_pda.
- */
-ENTRY(setup_pda)
- /* get the PDA pointer */
- movl $boot_pda, %eax
-
- /* slot the PDA address into the GDT */
- mov $cpu_gdt_table, %ecx
- mov %ax, (__KERNEL_PDA+0+2)(%ecx) /* base & 0x0000ffff */
- shr $16, %eax
- mov %al, (__KERNEL_PDA+4+0)(%ecx) /* base & 0x00ff0000 */
- mov %ah, (__KERNEL_PDA+4+3)(%ecx) /* base & 0xff000000 */
-
- # %esi still points to start_info, and no registers
- # need to be preserved.
-
- movl XEN_START_mfn_list(%esi), %ebx
- movl $(cpu_gdt_table - __PAGE_OFFSET), %eax
- shrl $PAGE_SHIFT, %eax
- movl (%ebx,%eax,4), %ecx
- pushl %ecx # frame number for set_gdt below
-
- xorl %esi, %esi
- xorl %edx, %edx
- shldl $PAGE_SHIFT, %ecx, %edx
- shll $PAGE_SHIFT, %ecx
- orl $0x61, %ecx
- movl $cpu_gdt_table, %ebx
- movl $__HYPERVISOR_update_va_mapping, %eax
- int $0x82
-
- movl $(PAGE_SIZE_asm / 8), %ecx
- movl %esp, %ebx
- movl $__HYPERVISOR_set_gdt, %eax
- int $0x82
-
- popl %ecx
- ret
-
#define HYPERCALL_PAGE_OFFSET 0x1000
.org HYPERCALL_PAGE_OFFSET
ENTRY(hypercall_page)
@@ -138,60 +95,6 @@ ENTRY(empty_zero_page)
*/
.data
-/*
- * The Global Descriptor Table contains 28 quadwords, per-CPU.
- */
- .section .data.page_aligned, "aw"
- .align PAGE_SIZE_asm
-ENTRY(cpu_gdt_table)
- .quad 0x0000000000000000 /* NULL descriptor */
- .quad 0x0000000000000000 /* 0x0b reserved */
- .quad 0x0000000000000000 /* 0x13 reserved */
- .quad 0x0000000000000000 /* 0x1b reserved */
- .quad 0x0000000000000000 /* 0x20 unused */
- .quad 0x0000000000000000 /* 0x28 unused */
- .quad 0x0000000000000000 /* 0x33 TLS entry 1 */
- .quad 0x0000000000000000 /* 0x3b TLS entry 2 */
- .quad 0x0000000000000000 /* 0x43 TLS entry 3 */
- .quad 0x0000000000000000 /* 0x4b reserved */
- .quad 0x0000000000000000 /* 0x53 reserved */
- .quad 0x0000000000000000 /* 0x5b reserved */
-
- .quad 0x00cf9a000000ffff /* 0x60 kernel 4GB code at 0x00000000 */
- .quad 0x00cf92000000ffff /* 0x68 kernel 4GB data at 0x00000000 */
- .quad 0x00cffa000000ffff /* 0x73 user 4GB code at 0x00000000 */
- .quad 0x00cff2000000ffff /* 0x7b user 4GB data at 0x00000000 */
-
- .quad 0x0000000000000000 /* 0x80 TSS descriptor */
- .quad 0x0000000000000000 /* 0x88 LDT descriptor */
-
- /*
- * Segments used for calling PnP BIOS have byte granularity.
- * They code segments and data segments have fixed 64k limits,
- * the transfer segment sizes are set at run time.
- */
- .quad 0x0000000000000000 /* 0x90 32-bit code */
- .quad 0x0000000000000000 /* 0x98 16-bit code */
- .quad 0x0000000000000000 /* 0xa0 16-bit data */
- .quad 0x0000000000000000 /* 0xa8 16-bit data */
- .quad 0x0000000000000000 /* 0xb0 16-bit data */
-
- /*
- * The APM segments have byte granularity and their bases
- * are set at run time. All have 64k limits.
- */
- .quad 0x0000000000000000 /* 0xb8 APM CS code */
- .quad 0x0000000000000000 /* 0xc0 APM CS 16 code (16 bit) */
- .quad 0x0000000000000000 /* 0xc8 APM DS data */
-
- .quad 0x0000000000000000 /* 0xd0 - ESPFIX SS */
- .quad 0x00cf92000000ffff /* 0xd8 - PDA */
- .quad 0x0000000000000000 /* 0xe0 - unused */
- .quad 0x0000000000000000 /* 0xe8 - unused */
- .quad 0x0000000000000000 /* 0xf0 - unused */
- .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */
- .align PAGE_SIZE_asm
-
#if CONFIG_XEN_COMPAT <= 0x030002
/*
* __xen_guest information
--- head-2010-05-25.orig/arch/x86/kernel/io_apic_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/io_apic_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -25,7 +25,6 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/sched.h>
-#include <linux/smp_lock.h>
#include <linux/mc146818rtc.h>
#include <linux/compiler.h>
#include <linux/acpi.h>
@@ -35,6 +34,7 @@
#include <linux/msi.h>
#include <linux/htirq.h>
#include <linux/freezer.h>
+#include <linux/kthread.h>
#include <asm/io.h>
#include <asm/smp.h>
@@ -710,8 +710,6 @@ static int balanced_irq(void *unused)
unsigned long prev_balance_time = jiffies;
long time_remaining = balanced_irq_interval;
- daemonize("kirqd");
-
/* push everything to CPU 0 to give us a starting point. */
for (i = 0 ; i < NR_IRQS ; i++) {
irq_desc[i].pending_mask = cpumask_of_cpu(0);
@@ -771,10 +769,9 @@ static int __init balanced_irq_init(void
}
printk(KERN_INFO "Starting balanced_irq\n");
- if (kernel_thread(balanced_irq, NULL, CLONE_KERNEL) >= 0)
+ if (!IS_ERR(kthread_run(balanced_irq, NULL, "kirqd")))
return 0;
- else
- printk(KERN_ERR "balanced_irq_init: failed to spawn balanced_irq");
+ printk(KERN_ERR "balanced_irq_init: failed to spawn balanced_irq");
failed:
for_each_possible_cpu(i) {
kfree(irq_cpu_data[i].irq_delta);
@@ -1455,10 +1452,6 @@ static void __init setup_ExtINT_IRQ0_pin
enable_8259A_irq(0);
}
-static inline void UNEXPECTED_IO_APIC(void)
-{
-}
-
void __init print_IO_APIC(void)
{
int apic, i;
@@ -1498,34 +1491,12 @@ void __init print_IO_APIC(void)
printk(KERN_DEBUG "....... : physical APIC id: %02X\n", reg_00.bits.ID);
printk(KERN_DEBUG "....... : Delivery Type: %X\n", reg_00.bits.delivery_type);
printk(KERN_DEBUG "....... : LTS : %X\n", reg_00.bits.LTS);
- if (reg_00.bits.ID >= get_physical_broadcast())
- UNEXPECTED_IO_APIC();
- if (reg_00.bits.__reserved_1 || reg_00.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
printk(KERN_DEBUG ".... register #01: %08X\n", reg_01.raw);
printk(KERN_DEBUG "....... : max redirection entries: %04X\n", reg_01.bits.entries);
- if ( (reg_01.bits.entries != 0x0f) && /* older (Neptune) boards */
- (reg_01.bits.entries != 0x17) && /* typical ISA+PCI boards */
- (reg_01.bits.entries != 0x1b) && /* Compaq Proliant boards */
- (reg_01.bits.entries != 0x1f) && /* dual Xeon boards */
- (reg_01.bits.entries != 0x22) && /* bigger Xeon boards */
- (reg_01.bits.entries != 0x2E) &&
- (reg_01.bits.entries != 0x3F)
- )
- UNEXPECTED_IO_APIC();
printk(KERN_DEBUG "....... : PRQ implemented: %X\n", reg_01.bits.PRQ);
printk(KERN_DEBUG "....... : IO APIC version: %04X\n", reg_01.bits.version);
- if ( (reg_01.bits.version != 0x01) && /* 82489DX IO-APICs */
- (reg_01.bits.version != 0x10) && /* oldest IO-APICs */
- (reg_01.bits.version != 0x11) && /* Pentium/Pro IO-APICs */
- (reg_01.bits.version != 0x13) && /* Xeon IO-APICs */
- (reg_01.bits.version != 0x20) /* Intel P64H (82806 AA) */
- )
- UNEXPECTED_IO_APIC();
- if (reg_01.bits.__reserved_1 || reg_01.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
/*
* Some Intel chipsets with IO APIC VERSION of 0x1? don't have reg_02,
@@ -1535,8 +1506,6 @@ void __init print_IO_APIC(void)
if (reg_01.bits.version >= 0x10 && reg_02.raw != reg_01.raw) {
printk(KERN_DEBUG ".... register #02: %08X\n", reg_02.raw);
printk(KERN_DEBUG "....... : arbitration: %02X\n", reg_02.bits.arbitration);
- if (reg_02.bits.__reserved_1 || reg_02.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
}
/*
@@ -1548,8 +1517,6 @@ void __init print_IO_APIC(void)
reg_03.raw != reg_01.raw) {
printk(KERN_DEBUG ".... register #03: %08X\n", reg_03.raw);
printk(KERN_DEBUG "....... : Boot DT : %X\n", reg_03.bits.boot_DT);
- if (reg_03.bits.__reserved_1)
- UNEXPECTED_IO_APIC();
}
printk(KERN_DEBUG ".... IRQ redirection table:\n");
@@ -2686,19 +2653,19 @@ int arch_setup_msi_irq(struct pci_dev *d
if (irq < 0)
return irq;
- set_irq_msi(irq, desc);
ret = msi_compose_msg(dev, irq, &msg);
if (ret < 0) {
destroy_irq(irq);
return ret;
}
+ set_irq_msi(irq, desc);
write_msi_msg(irq, &msg);
set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq,
"edge");
- return irq;
+ return 0;
}
void arch_teardown_msi_irq(unsigned int irq)
--- head-2010-05-25.orig/arch/x86/kernel/ioport_32-xen.c 2008-01-28 12:24:19.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/ioport_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -12,10 +12,10 @@
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/thread_info.h>
+#include <linux/syscalls.h>
#include <xen/interface/physdev.h>
/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
--- head-2010-05-25.orig/arch/x86/kernel/ldt_32-xen.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/ldt_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -10,7 +10,6 @@
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
--- head-2010-05-25.orig/arch/x86/kernel/microcode-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/microcode-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -135,7 +135,7 @@ static int __init microcode_dev_init (vo
return 0;
}
-static void __exit microcode_dev_exit (void)
+static void microcode_dev_exit (void)
{
misc_deregister(&microcode_dev);
}
--- head-2010-05-25.orig/arch/x86/kernel/mpparse_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/mpparse_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -18,7 +18,6 @@
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
#include <linux/bitops.h>
@@ -484,7 +483,7 @@ static int __init smp_read_mpc(struct mp
}
++mpc_record;
}
- clustered_apic_check();
+ setup_apic_routing();
if (!num_processors)
printk(KERN_ERR "SMP mptable: no processors registered!\n");
return num_processors;
--- head-2010-05-25.orig/arch/x86/kernel/pci-dma-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/pci-dma-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -13,6 +13,7 @@
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/version.h>
+#include <linux/pci.h>
#include <asm/io.h>
#include <xen/balloon.h>
#include <xen/gnttab.h>
@@ -275,7 +276,7 @@ int dma_declare_coherent_memory(struct d
{
void __iomem *mem_base = NULL;
int pages = size >> PAGE_SHIFT;
- int bitmap_size = (pages + 31)/32;
+ int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long);
if ((flags & (DMA_MEMORY_MAP | DMA_MEMORY_IO)) == 0)
goto out;
@@ -348,6 +349,32 @@ void *dma_mark_declared_memory_occupied(
EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
#endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
+#if defined(CONFIG_PCI) && !defined(CONFIG_XEN)
+/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
+
+int forbid_dac;
+EXPORT_SYMBOL(forbid_dac);
+
+static __devinit void via_no_dac(struct pci_dev *dev)
+{
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
+ printk(KERN_INFO "PCI: VIA PCI bridge detected. Disabling DAC.\n");
+ forbid_dac = 1;
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
+
+static int check_iommu(char *s)
+{
+ if (!strcmp(s, "usedac")) {
+ forbid_dac = -1;
+ return 1;
+ }
+ return 0;
+}
+__setup("iommu=", check_iommu);
+#endif
+
dma_addr_t
dma_map_single(struct device *dev, void *ptr, size_t size,
enum dma_data_direction direction)
--- head-2010-05-25.orig/arch/x86/kernel/process_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/process_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -21,7 +21,6 @@
#include <linux/mm.h>
#include <linux/elfcore.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
@@ -39,6 +38,7 @@
#include <linux/random.h>
#include <linux/personality.h>
#include <linux/tick.h>
+#include <linux/percpu.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -61,7 +61,6 @@
#include <asm/tlbflush.h>
#include <asm/cpu.h>
-#include <asm/pda.h>
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
@@ -70,6 +69,12 @@ static int hlt_counter;
unsigned long boot_option_idle_override = 0;
EXPORT_SYMBOL(boot_option_idle_override);
+DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
+EXPORT_PER_CPU_SYMBOL(current_task);
+
+DEFINE_PER_CPU(int, cpu_number);
+EXPORT_PER_CPU_SYMBOL(cpu_number);
+
/*
* Return saved PC of a blocked thread.
*/
@@ -168,6 +173,7 @@ void cpu_idle(void)
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
+ check_pgt_cache();
rmb();
idle = xen_idle; /* no alternatives */
@@ -218,18 +224,19 @@ void __devinit select_idle_routine(const
{
}
-static int __init idle_setup (char *str)
+static int __init idle_setup(char *str)
{
- if (!strncmp(str, "poll", 4)) {
+ if (!strcmp(str, "poll")) {
printk("using polling idle threads.\n");
pm_idle = poll_idle;
}
+ else
+ return -1;
boot_option_idle_override = 1;
- return 1;
+ return 0;
}
-
-__setup("idle=", idle_setup);
+early_param("idle", idle_setup);
void show_regs(struct pt_regs * regs)
{
@@ -282,7 +289,7 @@ int kernel_thread(int (*fn)(void *), voi
regs.xds = __USER_DS;
regs.xes = __USER_DS;
- regs.xfs = __KERNEL_PDA;
+ regs.xfs = __KERNEL_PERCPU;
regs.orig_eax = -1;
regs.eip = (unsigned long) kernel_thread_helper;
regs.xcs = __KERNEL_CS | get_kernel_rpl();
@@ -562,7 +569,7 @@ struct task_struct fastcall * __switch_t
* multicall to indicate FPU task switch, rather than
* synchronously trapping to Xen.
*/
- if (prev_p->thread_info->status & TS_USEDFPU) {
+ if (task_thread_info(prev_p)->status & TS_USEDFPU) {
__save_init_fpu(prev_p); /* _not_ save_init_fpu() */
mcl->op = __HYPERVISOR_fpu_taskswitch;
mcl->args[0] = 1;
@@ -669,7 +676,7 @@ struct task_struct fastcall * __switch_t
if (prev->gs | next->gs)
loadsegment(gs, next->gs);
- write_pda(pcurrent, next_p);
+ x86_write_percpu(current_task, next_p);
return prev_p;
}
--- head-2010-05-25.orig/arch/x86/kernel/quirks-xen.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/quirks-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -3,12 +3,10 @@
*/
#include <linux/pci.h>
#include <linux/irq.h>
-#include <asm/pci-direct.h>
-#include <asm/genapic.h>
-#include <asm/cpu.h>
#if defined(CONFIG_X86_IO_APIC) && (defined(CONFIG_SMP) || defined(CONFIG_XEN)) && defined(CONFIG_PCI)
-static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev)
+
+static void __devinit quirk_intel_irqbalance(struct pci_dev *dev)
{
u8 config, rev;
u32 word;
@@ -16,7 +14,7 @@ static void __devinit verify_quirk_intel
/* BIOS may enable hardware IRQ balancing for
* E7520/E7320/E7525(revision ID 0x9 and below)
* based platforms.
- * For those platforms, make sure that the genapic is set to 'flat'
+ * Disable SW irqbalance/affinity on those platforms.
*/
pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
if (rev > 0x9)
@@ -30,59 +28,20 @@ static void __devinit verify_quirk_intel
raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
if (!(word & (1 << 13))) {
-#ifndef CONFIG_XEN
-#ifdef CONFIG_X86_64
- if (genapic != &apic_flat)
- panic("APIC mode must be flat on this system\n");
-#elif defined(CONFIG_X86_GENERICARCH)
- if (genapic != &apic_default)
- panic("APIC mode must be default(flat) on this system. Use apic=default\n");
-#endif
-#endif
- }
-
- /* put back the original value for config space*/
- if (!(config & 0x2))
- pci_write_config_byte(dev, 0xf4, config);
-}
-
-void __init quirk_intel_irqbalance(void)
-{
- u8 config, rev;
- u32 word;
-
- /* BIOS may enable hardware IRQ balancing for
- * E7520/E7320/E7525(revision ID 0x9 and below)
- * based platforms.
- * Disable SW irqbalance/affinity on those platforms.
- */
- rev = read_pci_config_byte(0, 0, 0, PCI_CLASS_REVISION);
- if (rev > 0x9)
- return;
-
- printk(KERN_INFO "Intel E7520/7320/7525 detected.");
-
- /* enable access to config space */
- config = read_pci_config_byte(0, 0, 0, 0xf4);
- write_pci_config_byte(0, 0, 0, 0xf4, config|0x2);
-
- /* read xTPR register */
- word = read_pci_config_16(0, 0, 0x40, 0x4c);
-
- if (!(word & (1 << 13))) {
struct xen_platform_op op;
- printk(KERN_INFO "Disabling irq balancing and affinity\n");
+
+ printk(KERN_INFO "Intel E7520/7320/7525 detected. "
+ "Disabling irq balancing and affinity\n");
op.cmd = XENPF_platform_quirk;
op.u.platform_quirk.quirk_id = QUIRK_NOIRQBALANCING;
WARN_ON(HYPERVISOR_platform_op(&op));
}
- /* put back the original value for config space */
+ /* put back the original value for config space*/
if (!(config & 0x2))
- write_pci_config_byte(0, 0, 0, 0xf4, config);
+ pci_write_config_byte(dev, 0xf4, config);
}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, verify_quirk_intel_irqbalance);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, verify_quirk_intel_irqbalance);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, verify_quirk_intel_irqbalance);
-
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_intel_irqbalance);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_intel_irqbalance);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_intel_irqbalance);
#endif
--- head-2010-05-25.orig/arch/x86/kernel/smp_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/smp_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -13,7 +13,6 @@
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
#include <linux/cache.h>
@@ -216,7 +215,6 @@ static cpumask_t flush_cpumask;
static struct mm_struct * flush_mm;
static unsigned long flush_va;
static DEFINE_SPINLOCK(tlbstate_lock);
-#define FLUSH_ALL 0xffffffff
/*
* We cannot call mmdrop() because we are in interrupt context,
@@ -298,7 +296,7 @@ irqreturn_t smp_invalidate_interrupt(int
if (flush_mm == per_cpu(cpu_tlbstate, cpu).active_mm) {
if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK) {
- if (flush_va == FLUSH_ALL)
+ if (flush_va == TLB_FLUSH_ALL)
local_flush_tlb();
else
__flush_tlb_one(flush_va);
@@ -314,9 +312,11 @@ out:
return IRQ_HANDLED;
}
-static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
- unsigned long va)
+void native_flush_tlb_others(const cpumask_t *cpumaskp, struct mm_struct *mm,
+ unsigned long va)
{
+ cpumask_t cpumask = *cpumaskp;
+
/*
* A couple of (to be removed) sanity checks:
*
@@ -327,10 +327,12 @@ static void flush_tlb_others(cpumask_t c
BUG_ON(cpu_isset(smp_processor_id(), cpumask));
BUG_ON(!mm);
+#ifdef CONFIG_HOTPLUG_CPU
/* If a CPU which we ran on has gone down, OK. */
cpus_and(cpumask, cpumask, cpu_online_map);
- if (cpus_empty(cpumask))
+ if (unlikely(cpus_empty(cpumask)))
return;
+#endif
/*
* i'm not happy about this global shared spinlock in the
@@ -341,17 +343,7 @@ static void flush_tlb_others(cpumask_t c
flush_mm = mm;
flush_va = va;
-#if NR_CPUS <= BITS_PER_LONG
- atomic_set_mask(cpumask, &flush_cpumask);
-#else
- {
- int k;
- unsigned long *flush_mask = (unsigned long *)&flush_cpumask;
- unsigned long *cpu_mask = (unsigned long *)&cpumask;
- for (k = 0; k < BITS_TO_LONGS(NR_CPUS); ++k)
- atomic_set_mask(cpu_mask[k], &flush_mask[k]);
- }
-#endif
+ cpus_or(flush_cpumask, cpumask, flush_cpumask);
/*
* We have to send the IPI only to
* CPUs affected.
@@ -378,7 +370,7 @@ void flush_tlb_current_task(void)
local_flush_tlb();
if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
+ flush_tlb_others(cpu_mask, mm, TLB_FLUSH_ALL);
preempt_enable();
}
@@ -397,7 +389,7 @@ void flush_tlb_mm (struct mm_struct * mm
leave_mm(smp_processor_id());
}
if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
+ flush_tlb_others(cpu_mask, mm, TLB_FLUSH_ALL);
preempt_enable();
}
@@ -446,7 +438,7 @@ void flush_tlb_all(void)
* it goes straight through and wastes no time serializing
* anything. Worst case is that we lose a reschedule ...
*/
-void smp_send_reschedule(int cpu)
+void xen_smp_send_reschedule(int cpu)
{
WARN_ON(cpu_is_offline(cpu));
send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
@@ -478,36 +470,79 @@ void unlock_ipi_call_lock(void)
static struct call_data_struct *call_data;
+static void __smp_call_function(void (*func) (void *info), void *info,
+ int nonatomic, int wait)
+{
+ struct call_data_struct data;
+ int cpus = num_online_cpus() - 1;
+
+ if (!cpus)
+ return;
+
+ data.func = func;
+ data.info = info;
+ atomic_set(&data.started, 0);
+ data.wait = wait;
+ if (wait)
+ atomic_set(&data.finished, 0);
+
+ call_data = &data;
+ mb();
+
+ /* Send a message to all other CPUs and wait for them to respond */
+ send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+
+ /* Wait for response */
+ while (atomic_read(&data.started) != cpus)
+ cpu_relax();
+
+ if (wait)
+ while (atomic_read(&data.finished) != cpus)
+ cpu_relax();
+}
+
+
/**
- * smp_call_function(): Run a function on all other CPUs.
+ * smp_call_function_mask(): Run a function on a set of other CPUs.
+ * @mask: The set of cpus to run on. Must not include the current cpu.
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
- * @nonatomic: currently unused.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
- * Returns 0 on success, else a negative status code. Does not return until
- * remote CPUs are nearly ready to execute <<func>> or are or have executed.
+ * Returns 0 on success, else a negative status code.
+ *
+ * If @wait is true, then returns once @func has returned; otherwise
+ * it returns just before the target cpu calls @func.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
-int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
- int wait)
+int
+xen_smp_call_function_mask(cpumask_t mask,
+ void (*func)(void *), void *info,
+ int wait)
{
struct call_data_struct data;
+ cpumask_t allbutself;
int cpus;
+ /* Can deadlock when called with interrupts disabled */
+ WARN_ON(irqs_disabled());
+
/* Holding any lock stops cpus from going down. */
spin_lock(&call_lock);
- cpus = num_online_cpus() - 1;
+
+ allbutself = cpu_online_map;
+ cpu_clear(smp_processor_id(), allbutself);
+
+ cpus_and(mask, mask, allbutself);
+ cpus = cpus_weight(mask);
+
if (!cpus) {
spin_unlock(&call_lock);
return 0;
}
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
@@ -517,9 +552,12 @@ int smp_call_function (void (*func) (voi
call_data = &data;
mb();
-
- /* Send a message to all other CPUs and wait for them to respond */
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+
+ /* Send a message to other CPUs */
+ if (cpus_equal(mask, allbutself))
+ send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+ else
+ send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
@@ -532,15 +570,14 @@ int smp_call_function (void (*func) (voi
return 0;
}
-EXPORT_SYMBOL(smp_call_function);
static void stop_this_cpu (void * dummy)
{
+ local_irq_disable();
/*
* Remove this CPU:
*/
cpu_clear(smp_processor_id(), cpu_online_map);
- local_irq_disable();
disable_all_local_evtchn();
if (cpu_data[smp_processor_id()].hlt_works_ok)
for(;;) halt();
@@ -551,13 +588,18 @@ static void stop_this_cpu (void * dummy)
* this function calls the 'stop' function on all other CPUs in the system.
*/
-void smp_send_stop(void)
+void xen_smp_send_stop(void)
{
- smp_call_function(stop_this_cpu, NULL, 1, 0);
+ /* Don't deadlock on the call lock in panic */
+ int nolock = !spin_trylock(&call_lock);
+ unsigned long flags;
- local_irq_disable();
+ local_irq_save(flags);
+ __smp_call_function(stop_this_cpu, NULL, 0, 0);
+ if (!nolock)
+ spin_unlock(&call_lock);
disable_all_local_evtchn();
- local_irq_enable();
+ local_irq_restore(flags);
}
/*
@@ -598,74 +640,3 @@ irqreturn_t smp_call_function_interrupt(
return IRQ_HANDLED;
}
-
-/*
- * this function sends a 'generic call function' IPI to one other CPU
- * in the system.
- *
- * cpu is a standard Linux logical CPU number.
- */
-static void
-__smp_call_function_single(int cpu, void (*func) (void *info), void *info,
- int nonatomic, int wait)
-{
- struct call_data_struct data;
- int cpus = 1;
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- wmb();
- /* Send a message to all other CPUs and wait for them to respond */
- send_IPI_mask(cpumask_of_cpu(cpu), CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- cpu_relax();
-
- if (!wait)
- return;
-
- while (atomic_read(&data.finished) != cpus)
- cpu_relax();
-}
-
-/*
- * smp_call_function_single - Run a function on another CPU
- * @func: The function to run. This must be fast and non-blocking.
- * @info: An arbitrary pointer to pass to the function.
- * @nonatomic: Currently unused.
- * @wait: If true, wait until function has completed on other CPUs.
- *
- * Retrurns 0 on success, else a negative status code.
- *
- * Does not return until the remote CPU is nearly ready to execute <func>
- * or is or has executed.
- */
-
-int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
- int nonatomic, int wait)
-{
- /* prevent preemption and reschedule on another processor */
- int me = get_cpu();
- if (cpu == me) {
- WARN_ON(1);
- put_cpu();
- return -EBUSY;
- }
-
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-
- spin_lock_bh(&call_lock);
- __smp_call_function_single(cpu, func, info, nonatomic, wait);
- spin_unlock_bh(&call_lock);
- put_cpu();
- return 0;
-}
-EXPORT_SYMBOL(smp_call_function_single);
--- head-2010-05-25.orig/arch/x86/kernel/time-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/time-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -79,7 +79,6 @@
#include <asm/i8253.h>
DEFINE_SPINLOCK(i8253_lock);
EXPORT_SYMBOL(i8253_lock);
-int pit_latch_buggy; /* extern */
#else
volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
#endif
@@ -199,6 +198,36 @@ static inline u64 scale_delta(u64 delta,
return product;
}
+static inline u64 get64(volatile u64 *ptr)
+{
+#ifndef CONFIG_64BIT
+ u64 res;
+ __asm__("movl %%ebx,%%eax\n"
+ "movl %%ecx,%%edx\n"
+ LOCK_PREFIX "cmpxchg8b %1"
+ : "=&A" (res) : "m" (*ptr));
+ return res;
+#else
+ return *ptr;
+#define cmpxchg64 cmpxchg
+#endif
+}
+
+static inline u64 get64_local(volatile u64 *ptr)
+{
+#ifndef CONFIG_64BIT
+ u64 res;
+ __asm__("movl %%ebx,%%eax\n"
+ "movl %%ecx,%%edx\n"
+ "cmpxchg8b %1"
+ : "=&A" (res) : "m" (*ptr));
+ return res;
+#else
+ return *ptr;
+#define cmpxchg64_local cmpxchg_local
+#endif
+}
+
static void init_cpu_khz(void)
{
u64 __cpu_khz = 1000000ULL << 32;
@@ -378,7 +407,7 @@ static int set_rtc_mmss(unsigned long no
return retval;
}
-unsigned long long sched_clock(void)
+static unsigned long long local_clock(void)
{
unsigned int cpu = get_cpu();
struct shadow_time_info *shadow = &per_cpu(shadow_time, cpu);
@@ -399,6 +428,61 @@ unsigned long long sched_clock(void)
return time;
}
+/*
+ * Runstate accounting
+ */
+static void get_runstate_snapshot(struct vcpu_runstate_info *res)
+{
+ u64 state_time;
+ struct vcpu_runstate_info *state;
+
+ BUG_ON(preemptible());
+
+ state = &__get_cpu_var(runstate);
+
+ do {
+ state_time = get64_local(&state->state_entry_time);
+ *res = *state;
+ } while (get64_local(&state->state_entry_time) != state_time);
+
+ WARN_ON_ONCE(res->state != RUNSTATE_running);
+}
+
+/*
+ * Xen sched_clock implementation. Returns the number of unstolen
+ * nanoseconds, which is nanoseconds the VCPU spent in RUNNING+BLOCKED
+ * states.
+ */
+unsigned long long sched_clock(void)
+{
+ struct vcpu_runstate_info runstate;
+ cycle_t now;
+ u64 ret;
+ s64 offset;
+
+ /*
+ * Ideally sched_clock should be called on a per-cpu basis
+ * anyway, so preempt should already be disabled, but that's
+ * not current practice at the moment.
+ */
+ preempt_disable();
+
+ now = local_clock();
+
+ get_runstate_snapshot(&runstate);
+
+ offset = now - runstate.state_entry_time;
+ if (offset < 0)
+ offset = 0;
+
+ ret = offset + runstate.time[RUNSTATE_running]
+ + runstate.time[RUNSTATE_blocked];
+
+ preempt_enable();
+
+ return ret;
+}
+
unsigned long profile_pc(struct pt_regs *regs)
{
unsigned long pc = instruction_pointer(regs);
@@ -446,10 +530,9 @@ EXPORT_SYMBOL(profile_pc);
irqreturn_t timer_interrupt(int irq, void *dev_id)
{
s64 delta, delta_cpu, stolen, blocked;
- u64 sched_time;
unsigned int i, cpu = smp_processor_id();
struct shadow_time_info *shadow = &per_cpu(shadow_time, cpu);
- struct vcpu_runstate_info *runstate = &per_cpu(runstate, cpu);
+ struct vcpu_runstate_info runstate;
/*
* Here we are in the timer irq handler. We just have irqs locally
@@ -469,20 +552,7 @@ irqreturn_t timer_interrupt(int irq, voi
delta -= processed_system_time;
delta_cpu -= per_cpu(processed_system_time, cpu);
- /*
- * Obtain a consistent snapshot of stolen/blocked cycles. We
- * can use state_entry_time to detect if we get preempted here.
- */
- do {
- sched_time = runstate->state_entry_time;
- barrier();
- stolen = runstate->time[RUNSTATE_runnable] +
- runstate->time[RUNSTATE_offline] -
- per_cpu(processed_stolen_time, cpu);
- blocked = runstate->time[RUNSTATE_blocked] -
- per_cpu(processed_blocked_time, cpu);
- barrier();
- } while (sched_time != runstate->state_entry_time);
+ get_runstate_snapshot(&runstate);
} while (!time_values_up_to_date(cpu));
if ((unlikely(delta < -(s64)permitted_clock_jitter) ||
@@ -525,6 +595,9 @@ irqreturn_t timer_interrupt(int irq, voi
* HACK: Passing NULL to account_steal_time()
* ensures that the ticks are accounted as stolen.
*/
+ stolen = runstate.time[RUNSTATE_runnable]
+ + runstate.time[RUNSTATE_offline]
+ - per_cpu(processed_stolen_time, cpu);
if ((stolen > 0) && (delta_cpu > 0)) {
delta_cpu -= stolen;
if (unlikely(delta_cpu < 0))
@@ -540,6 +613,8 @@ irqreturn_t timer_interrupt(int irq, voi
* HACK: Passing idle_task to account_steal_time()
* ensures that the ticks are accounted as idle/wait.
*/
+ blocked = runstate.time[RUNSTATE_blocked]
+ - per_cpu(processed_blocked_time, cpu);
if ((blocked > 0) && (delta_cpu > 0)) {
delta_cpu -= blocked;
if (unlikely(delta_cpu < 0))
@@ -576,7 +651,7 @@ irqreturn_t timer_interrupt(int irq, voi
return IRQ_HANDLED;
}
-void mark_tsc_unstable(void)
+void mark_tsc_unstable(char *reason)
{
#ifndef CONFIG_XEN /* XXX Should tell the hypervisor about this fact. */
tsc_unstable = 1;
@@ -584,17 +659,13 @@ void mark_tsc_unstable(void)
}
EXPORT_SYMBOL_GPL(mark_tsc_unstable);
+static cycle_t cs_last;
+
static cycle_t xen_clocksource_read(void)
{
#ifdef CONFIG_SMP
- static cycle_t last_ret;
-#ifndef CONFIG_64BIT
- cycle_t last = cmpxchg64(&last_ret, 0, 0);
-#else
- cycle_t last = last_ret;
-#define cmpxchg64 cmpxchg
-#endif
- cycle_t ret = sched_clock();
+ cycle_t last = get64(&cs_last);
+ cycle_t ret = local_clock();
if (unlikely((s64)(ret - last) < 0)) {
if (last - ret > permitted_clock_jitter
@@ -613,17 +684,25 @@ static cycle_t xen_clocksource_read(void
}
for (;;) {
- cycle_t cur = cmpxchg64(&last_ret, last, ret);
+ cycle_t cur = cmpxchg64(&cs_last, last, ret);
if (cur == last || (s64)(ret - cur) < 0)
return ret;
last = cur;
}
#else
- return sched_clock();
+ return local_clock();
#endif
}
+static void xen_clocksource_resume(void)
+{
+ extern void time_resume(void);
+
+ time_resume();
+ cs_last = local_clock();
+}
+
static struct clocksource clocksource_xen = {
.name = "xen",
.rating = 400,
@@ -632,19 +711,29 @@ static struct clocksource clocksource_xe
.mult = 1 << XEN_SHIFT, /* time directly in nanoseconds */
.shift = XEN_SHIFT,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
+ .resume = xen_clocksource_resume,
};
-static void init_missing_ticks_accounting(unsigned int cpu)
+struct vcpu_runstate_info *setup_runstate_area(unsigned int cpu)
{
struct vcpu_register_runstate_memory_area area;
struct vcpu_runstate_info *runstate = &per_cpu(runstate, cpu);
int rc;
- memset(runstate, 0, sizeof(*runstate));
-
- area.addr.v = runstate;
+ set_xen_guest_handle(area.addr.h, runstate);
rc = HYPERVISOR_vcpu_op(VCPUOP_register_runstate_memory_area, cpu, &area);
- WARN_ON(rc && rc != -ENOSYS);
+ if (rc) {
+ BUILD_BUG_ON(RUNSTATE_running);
+ memset(runstate, 0, sizeof(*runstate));
+ WARN_ON(rc != -ENOSYS);
+ }
+
+ return runstate;
+}
+
+static void init_missing_ticks_accounting(unsigned int cpu)
+{
+ struct vcpu_runstate_info *runstate = setup_runstate_area(cpu);
per_cpu(processed_blocked_time, cpu) =
runstate->time[RUNSTATE_blocked];
@@ -720,35 +809,6 @@ void notify_arch_cmos_timer(void)
mod_timer(&sync_xen_wallclock_timer, jiffies + 1);
}
-static int timer_resume(struct sys_device *dev)
-{
- extern void time_resume(void);
- time_resume();
- return 0;
-}
-
-static struct sysdev_class timer_sysclass = {
- .resume = timer_resume,
- set_kset_name("timer"),
-};
-
-
-/* XXX this driverfs stuff should probably go elsewhere later -john */
-static struct sys_device device_timer = {
- .id = 0,
- .cls = &timer_sysclass,
-};
-
-static int time_init_device(void)
-{
- int error = sysdev_class_register(&timer_sysclass);
- if (!error)
- error = sysdev_register(&device_timer);
- return error;
-}
-
-device_initcall(time_init_device);
-
extern void (*late_time_init)(void);
/* Dynamically-mapped IRQ. */
@@ -892,21 +952,21 @@ static void start_hz_timer(void)
cpu_clear(cpu, nohz_cpu_mask);
}
-void raw_safe_halt(void)
+void xen_safe_halt(void)
{
stop_hz_timer();
/* Blocking includes an implicit local_irq_enable(). */
HYPERVISOR_block();
start_hz_timer();
}
-EXPORT_SYMBOL(raw_safe_halt);
+EXPORT_SYMBOL(xen_safe_halt);
-void halt(void)
+void xen_halt(void)
{
if (irqs_disabled())
VOID(HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL));
}
-EXPORT_SYMBOL(halt);
+EXPORT_SYMBOL(xen_halt);
/* No locking required. Interrupts are disabled on all CPUs. */
void time_resume(void)
--- head-2010-05-25.orig/arch/x86/kernel/traps_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/traps_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -52,7 +52,7 @@
#include <asm/unwind.h>
#include <asm/smp.h>
#include <asm/arch_hooks.h>
-#include <asm/kdebug.h>
+#include <linux/kdebug.h>
#include <asm/stacktrace.h>
#include <linux/module.h>
@@ -101,20 +101,6 @@ asmlinkage void machine_check(void);
int kstack_depth_to_print = 24;
static unsigned int code_bytes = 64;
-ATOMIC_NOTIFIER_HEAD(i386die_chain);
-
-int register_die_notifier(struct notifier_block *nb)
-{
- vmalloc_sync_all();
- return atomic_notifier_chain_register(&i386die_chain, nb);
-}
-EXPORT_SYMBOL(register_die_notifier); /* used modular by kdb */
-
-int unregister_die_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_unregister(&i386die_chain, nb);
-}
-EXPORT_SYMBOL(unregister_die_notifier); /* used modular by kdb */
static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
{
@@ -325,7 +311,7 @@ void show_registers(struct pt_regs *regs
regs->xds & 0xffff, regs->xes & 0xffff, regs->xfs & 0xffff, gs, ss);
printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)",
TASK_COMM_LEN, current->comm, current->pid,
- current_thread_info(), current, current->thread_info);
+ current_thread_info(), current, task_thread_info(current));
/*
* When in-kernel, we also print out the stack and code at the
* time of the fault..
@@ -482,8 +468,6 @@ static void __kprobes do_trap(int trapnr
siginfo_t *info)
{
struct task_struct *tsk = current;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = trapnr;
if (regs->eflags & VM_MASK) {
if (vm86)
@@ -495,6 +479,18 @@ static void __kprobes do_trap(int trapnr
goto kernel_trap;
trap_signal: {
+ /*
+ * We want error_code and trap_no set for userspace faults and
+ * kernelspace faults which result in die(), but not
+ * kernelspace faults which are fixed up. die() gives the
+ * process no chance to handle the signal and notice the
+ * kernel fault information, so that won't result in polluting
+ * the information about previously queued, but not yet
+ * delivered, faults. See also do_general_protection below.
+ */
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_no = trapnr;
+
if (info)
force_sig_info(signr, info, tsk);
else
@@ -503,8 +499,11 @@ static void __kprobes do_trap(int trapnr
}
kernel_trap: {
- if (!fixup_exception(regs))
+ if (!fixup_exception(regs)) {
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_no = trapnr;
die(str, regs, error_code);
+ }
return;
}
@@ -578,9 +577,6 @@ DO_ERROR_INFO(32, SIGSEGV, "iret excepti
fastcall void __kprobes do_general_protection(struct pt_regs * regs,
long error_code)
{
- current->thread.error_code = error_code;
- current->thread.trap_no = 13;
-
if (regs->eflags & VM_MASK)
goto gp_in_vm86;
@@ -599,6 +595,8 @@ gp_in_vm86:
gp_in_kernel:
if (!fixup_exception(regs)) {
+ current->thread.error_code = error_code;
+ current->thread.trap_no = 13;
if (notify_die(DIE_GPF, "general protection fault", regs,
error_code, 13, SIGSEGV) == NOTIFY_STOP)
return;
@@ -987,9 +985,7 @@ fastcall void do_spurious_interrupt_bug(
fastcall unsigned long patch_espfix_desc(unsigned long uesp,
unsigned long kesp)
{
- int cpu = smp_processor_id();
- struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
- struct desc_struct *gdt = (struct desc_struct *)cpu_gdt_descr->address;
+ struct desc_struct *gdt = __get_cpu_var(gdt_page).gdt;
unsigned long base = (kesp - uesp) & -THREAD_SIZE;
unsigned long new_kesp = kesp - base;
unsigned long lim_pages = (new_kesp | (THREAD_SIZE - 1)) >> PAGE_SHIFT;
--- head-2010-05-25.orig/arch/x86/mm/fault_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/fault_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -14,19 +14,20 @@
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/vt_kern.h> /* For unblank_screen() */
#include <linux/highmem.h>
+#include <linux/bootmem.h> /* for max_low_pfn */
+#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/kprobes.h>
#include <linux/uaccess.h>
+#include <linux/kdebug.h>
#include <asm/system.h>
#include <asm/desc.h>
-#include <asm/kdebug.h>
#include <asm/segment.h>
extern void die(const char *,struct pt_regs *,long);
@@ -259,25 +260,20 @@ static void dump_fault_path(unsigned lon
unsigned long page;
page = read_cr3();
- page = ((unsigned long *) __va(page))[address >> 22];
- if (oops_may_print())
- printk(KERN_ALERT "*pde = ma %08lx pa %08lx\n", page,
- machine_to_phys(page));
+ page = ((unsigned long *) __va(page))[address >> PGDIR_SHIFT];
+ printk(KERN_ALERT "*pde = ma %08lx pa %08lx\n", page,
+ machine_to_phys(page));
/*
* We must not directly access the pte in the highpte
* case if the page table is located in highmem.
* And lets rather not kmap-atomic the pte, just in case
* it's allocated already.
*/
-#ifdef CONFIG_HIGHPTE
- if ((page >> PAGE_SHIFT) >= highstart_pfn)
- return;
-#endif
- if ((page & 1) && oops_may_print()) {
- page &= PAGE_MASK;
- address &= 0x003ff000;
- page = machine_to_phys(page);
- page = ((unsigned long *) __va(page))[address >> PAGE_SHIFT];
+ if ((machine_to_phys(page) >> PAGE_SHIFT) < max_low_pfn
+ && (page & _PAGE_PRESENT)) {
+ page = machine_to_phys(page & PAGE_MASK);
+ page = ((unsigned long *) __va(page))[(address >> PAGE_SHIFT)
+ & (PTRS_PER_PTE - 1)];
printk(KERN_ALERT "*pte = ma %08lx pa %08lx\n", page,
machine_to_phys(page));
}
@@ -581,6 +577,11 @@ bad_area:
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
if (error_code & 4) {
+ /*
+ * It's possible to have interrupts off here.
+ */
+ local_irq_enable();
+
/*
* Valid to do another page fault here because this one came
* from user space.
@@ -633,7 +634,7 @@ no_context:
bust_spinlocks(1);
if (oops_may_print()) {
- #ifdef CONFIG_X86_PAE
+#ifdef CONFIG_X86_PAE
if (error_code & 16) {
pte_t *pte = lookup_address(address);
@@ -642,7 +643,7 @@ no_context:
"NX-protected page - exploit attempt? "
"(uid: %d)\n", current->uid);
}
- #endif
+#endif
if (address < PAGE_SIZE)
printk(KERN_ALERT "BUG: unable to handle kernel NULL "
"pointer dereference");
@@ -652,8 +653,8 @@ no_context:
printk(" at virtual address %08lx\n",address);
printk(KERN_ALERT " printing eip:\n");
printk("%08lx\n", regs->eip);
+ dump_fault_path(address);
}
- dump_fault_path(address);
tsk->thread.cr2 = address;
tsk->thread.trap_no = 14;
tsk->thread.error_code = error_code;
@@ -694,7 +695,6 @@ do_sigbus:
force_sig_info_fault(SIGBUS, BUS_ADRERR, address, tsk);
}
-#if !HAVE_SHARED_KERNEL_PMD
void vmalloc_sync_all(void)
{
/*
@@ -710,6 +710,9 @@ void vmalloc_sync_all(void)
static unsigned long start = TASK_SIZE;
unsigned long address;
+ if (SHARED_KERNEL_PMD)
+ return;
+
BUILD_BUG_ON(TASK_SIZE & ~PGDIR_MASK);
for (address = start;
address >= TASK_SIZE && address < hypervisor_virt_start;
@@ -739,4 +742,3 @@ void vmalloc_sync_all(void)
start = address + (1UL << PMD_SHIFT);
}
}
-#endif
--- head-2010-05-25.orig/arch/x86/mm/highmem_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/highmem_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -26,7 +26,7 @@ void kunmap(struct page *page)
* However when holding an atomic kmap is is not legal to sleep, so atomic
* kmaps are appropriate for short, tight code paths only.
*/
-static void *__kmap_atomic(struct page *page, enum km_type type, pgprot_t prot)
+void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
{
enum fixed_addresses idx;
unsigned long vaddr;
@@ -49,15 +49,7 @@ static void *__kmap_atomic(struct page *
void *kmap_atomic(struct page *page, enum km_type type)
{
- return __kmap_atomic(page, type, kmap_prot);
-}
-
-/* Same as kmap_atomic but with PAGE_KERNEL_RO page protection. */
-void *kmap_atomic_pte(struct page *page, enum km_type type)
-{
- return __kmap_atomic(page, type,
- test_bit(PG_pinned, &page->flags)
- ? PAGE_KERNEL_RO : kmap_prot);
+ return kmap_atomic_prot(page, type, kmap_prot);
}
void kunmap_atomic(void *kvaddr, enum km_type type)
@@ -80,6 +72,7 @@ void kunmap_atomic(void *kvaddr, enum km
#endif
}
+ /*arch_flush_lazy_mmu_mode();*/
pagefault_enable();
}
@@ -162,7 +155,6 @@ void copy_highpage(struct page *to, stru
EXPORT_SYMBOL(kmap);
EXPORT_SYMBOL(kunmap);
EXPORT_SYMBOL(kmap_atomic);
-EXPORT_SYMBOL(kmap_atomic_pte);
EXPORT_SYMBOL(kunmap_atomic);
EXPORT_SYMBOL(kmap_atomic_to_page);
EXPORT_SYMBOL(clear_highpage);
--- head-2010-05-25.orig/arch/x86/mm/hypervisor.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/hypervisor.c 2010-03-24 15:09:15.000000000 +0100
@@ -421,13 +421,13 @@ void xen_tlb_flush_all(void)
}
EXPORT_SYMBOL_GPL(xen_tlb_flush_all);
-void xen_tlb_flush_mask(cpumask_t *mask)
+void xen_tlb_flush_mask(const cpumask_t *mask)
{
struct mmuext_op op;
if ( cpus_empty(*mask) )
return;
op.cmd = MMUEXT_TLB_FLUSH_MULTI;
- set_xen_guest_handle(op.arg2.vcpumask, mask->bits);
+ set_xen_guest_handle(op.arg2.vcpumask, cpus_addr(*mask));
BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
EXPORT_SYMBOL_GPL(xen_tlb_flush_mask);
@@ -441,14 +441,14 @@ void xen_invlpg_all(unsigned long ptr)
}
EXPORT_SYMBOL_GPL(xen_invlpg_all);
-void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr)
+void xen_invlpg_mask(const cpumask_t *mask, unsigned long ptr)
{
struct mmuext_op op;
if ( cpus_empty(*mask) )
return;
op.cmd = MMUEXT_INVLPG_MULTI;
op.arg1.linear_addr = ptr & PAGE_MASK;
- set_xen_guest_handle(op.arg2.vcpumask, mask->bits);
+ set_xen_guest_handle(op.arg2.vcpumask, cpus_addr(*mask));
BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
EXPORT_SYMBOL_GPL(xen_invlpg_mask);
--- head-2010-05-25.orig/arch/x86/mm/init_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/init_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -22,6 +22,7 @@
#include <linux/init.h>
#include <linux/highmem.h>
#include <linux/pagemap.h>
+#include <linux/pfn.h>
#include <linux/poison.h>
#include <linux/bootmem.h>
#include <linux/slab.h>
@@ -65,17 +66,19 @@ static pmd_t * __init one_md_table_init(
pmd_t *pmd_table;
#ifdef CONFIG_X86_PAE
- pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT);
- make_lowmem_page_readonly(pmd_table, XENFEAT_writable_page_tables);
- set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
- pud = pud_offset(pgd, 0);
- if (pmd_table != pmd_offset(pud, 0))
- BUG();
-#else
+ if (!(__pgd_val(*pgd) & _PAGE_PRESENT)) {
+ pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+
+ paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT);
+ make_lowmem_page_readonly(pmd_table, XENFEAT_writable_page_tables);
+ set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
+ pud = pud_offset(pgd, 0);
+ if (pmd_table != pmd_offset(pud, 0))
+ BUG();
+ }
+#endif
pud = pud_offset(pgd, 0);
pmd_table = pmd_offset(pud, 0);
-#endif
return pmd_table;
}
@@ -86,16 +89,18 @@ static pmd_t * __init one_md_table_init(
*/
static pte_t * __init one_page_table_init(pmd_t *pmd)
{
+#if CONFIG_XEN_COMPAT <= 0x030002
if (pmd_none(*pmd)) {
+#else
+ if (!(__pmd_val(*pmd) & _PAGE_PRESENT)) {
+#endif
pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+
paravirt_alloc_pt(__pa(page_table) >> PAGE_SHIFT);
make_lowmem_page_readonly(page_table,
XENFEAT_writable_page_tables);
set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
- if (page_table != pte_offset_kernel(pmd, 0))
- BUG();
-
- return page_table;
+ BUG_ON(page_table != pte_offset_kernel(pmd, 0));
}
return pte_offset_kernel(pmd, 0);
@@ -115,7 +120,6 @@ static pte_t * __init one_page_table_ini
static void __init page_table_range_init (unsigned long start, unsigned long end, pgd_t *pgd_base)
{
pgd_t *pgd;
- pud_t *pud;
pmd_t *pmd;
int pgd_idx, pmd_idx;
unsigned long vaddr;
@@ -126,12 +130,10 @@ static void __init page_table_range_init
pgd = pgd_base + pgd_idx;
for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) {
- if (pgd_none(*pgd))
- one_md_table_init(pgd);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
+ pmd = one_md_table_init(pgd);
+ pmd = pmd + pmd_index(vaddr);
for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); pmd++, pmd_idx++) {
- if (vaddr < hypervisor_virt_start && pmd_none(*pmd))
+ if (vaddr < hypervisor_virt_start)
one_page_table_init(pmd);
vaddr += PMD_SIZE;
@@ -194,24 +196,25 @@ static void __init kernel_physical_mappi
/* Map with big pages if possible, otherwise create normal page tables. */
if (cpu_has_pse) {
unsigned int address2 = (pfn + PTRS_PER_PTE - 1) * PAGE_SIZE + PAGE_OFFSET + PAGE_SIZE-1;
-
if (is_kernel_text(address) || is_kernel_text(address2))
set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE_EXEC));
else
set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE));
+
pfn += PTRS_PER_PTE;
} else {
pte = one_page_table_init(pmd);
- pte += pte_ofs;
- for (; pte_ofs < PTRS_PER_PTE && pfn < max_low_pfn; pte++, pfn++, pte_ofs++) {
- /* XEN: Only map initial RAM allocation. */
- if ((pfn >= max_ram_pfn) || pte_present(*pte))
- continue;
- if (is_kernel_text(address))
- set_pte(pte, pfn_pte(pfn, PAGE_KERNEL_EXEC));
- else
- set_pte(pte, pfn_pte(pfn, PAGE_KERNEL));
+ for (pte += pte_ofs;
+ pte_ofs < PTRS_PER_PTE && pfn < max_low_pfn;
+ pte++, pfn++, pte_ofs++, address += PAGE_SIZE) {
+ /* XEN: Only map initial RAM allocation. */
+ if ((pfn >= max_ram_pfn) || pte_present(*pte))
+ continue;
+ if (is_kernel_text(address))
+ set_pte(pte, pfn_pte(pfn, PAGE_KERNEL_EXEC));
+ else
+ set_pte(pte, pfn_pte(pfn, PAGE_KERNEL));
}
pte_ofs = 0;
}
@@ -388,15 +391,44 @@ extern void __init remap_numa_kva(void);
pgd_t *swapper_pg_dir;
+static void __init xen_pagetable_setup_start(pgd_t *base)
+{
+}
+
+static void __init xen_pagetable_setup_done(pgd_t *base)
+{
+}
+
+/*
+ * Build a proper pagetable for the kernel mappings. Up until this
+ * point, we've been running on some set of pagetables constructed by
+ * the boot process.
+ *
+ * If we're booting on native hardware, this will be a pagetable
+ * constructed in arch/i386/kernel/head.S, and not running in PAE mode
+ * (even if we'll end up running in PAE). The root of the pagetable
+ * will be swapper_pg_dir.
+ *
+ * If we're booting paravirtualized under a hypervisor, then there are
+ * more options: we may already be running PAE, and the pagetable may
+ * or may not be based in swapper_pg_dir. In any case,
+ * paravirt_pagetable_setup_start() will set up swapper_pg_dir
+ * appropriately for the rest of the initialization to work.
+ *
+ * In general, pagetable_init() assumes that the pagetable may already
+ * be partially populated, and so it avoids stomping on any existing
+ * mappings.
+ */
static void __init pagetable_init (void)
{
- unsigned long vaddr;
+ unsigned long vaddr, end;
pgd_t *pgd_base = (pgd_t *)xen_start_info->pt_base;
+ xen_pagetable_setup_start(pgd_base);
+
/* Enable PSE if available */
- if (cpu_has_pse) {
+ if (cpu_has_pse)
set_in_cr4(X86_CR4_PSE);
- }
/* Enable PGE if available */
if (cpu_has_pge) {
@@ -413,9 +445,12 @@ static void __init pagetable_init (void)
* created - mappings will be set by set_fixmap():
*/
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
- page_table_range_init(vaddr, hypervisor_virt_start, pgd_base);
+ end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
+ page_table_range_init(vaddr, end, pgd_base);
permanent_kmaps_init(pgd_base);
+
+ xen_pagetable_setup_done(pgd_base);
}
#if defined(CONFIG_SOFTWARE_SUSPEND) || defined(CONFIG_ACPI_SLEEP)
@@ -756,34 +791,29 @@ int remove_memory(u64 start, u64 size)
EXPORT_SYMBOL_GPL(remove_memory);
#endif
-struct kmem_cache *pgd_cache;
struct kmem_cache *pmd_cache;
void __init pgtable_cache_init(void)
{
+ size_t pgd_size = PTRS_PER_PGD*sizeof(pgd_t);
+
if (PTRS_PER_PMD > 1) {
pmd_cache = kmem_cache_create("pmd",
PTRS_PER_PMD*sizeof(pmd_t),
PTRS_PER_PMD*sizeof(pmd_t),
- 0,
+ SLAB_PANIC,
pmd_ctor,
NULL);
- if (!pmd_cache)
- panic("pgtable_cache_init(): cannot create pmd cache");
+ if (!SHARED_KERNEL_PMD) {
+ /* If we're in PAE mode and have a non-shared
+ kernel pmd, then the pgd size must be a
+ page size. This is because the pgd_list
+ links through the page structure, so there
+ can only be one pgd per page for this to
+ work. */
+ pgd_size = PAGE_SIZE;
+ }
}
- pgd_cache = kmem_cache_create("pgd",
-#ifndef CONFIG_XEN
- PTRS_PER_PGD*sizeof(pgd_t),
- PTRS_PER_PGD*sizeof(pgd_t),
-#else
- PAGE_SIZE,
- PAGE_SIZE,
-#endif
- 0,
- pgd_ctor,
- PTRS_PER_PMD == 1 ? pgd_dtor : NULL);
- if (!pgd_cache)
- panic("pgtable_cache_init(): Cannot create pgd cache");
}
/*
@@ -817,13 +847,26 @@ static int noinline do_test_wp_bit(void)
void mark_rodata_ro(void)
{
- unsigned long addr = (unsigned long)__start_rodata;
-
- for (; addr < (unsigned long)__end_rodata; addr += PAGE_SIZE)
- change_page_attr(virt_to_page(addr), 1, PAGE_KERNEL_RO);
+ unsigned long start = PFN_ALIGN(_text);
+ unsigned long size = PFN_ALIGN(_etext) - start;
- printk("Write protecting the kernel read-only data: %uk\n",
- (__end_rodata - __start_rodata) >> 10);
+#ifndef CONFIG_KPROBES
+#ifdef CONFIG_HOTPLUG_CPU
+ /* It must still be possible to apply SMP alternatives. */
+ if (num_possible_cpus() <= 1)
+#endif
+ {
+ change_page_attr(virt_to_page(start),
+ size >> PAGE_SHIFT, PAGE_KERNEL_RX);
+ printk("Write protecting the kernel text: %luk\n", size >> 10);
+ }
+#endif
+ start += size;
+ size = (unsigned long)__end_rodata - start;
+ change_page_attr(virt_to_page(start),
+ size >> PAGE_SHIFT, PAGE_KERNEL_RO);
+ printk("Write protecting the kernel read-only data: %luk\n",
+ size >> 10);
/*
* change_page_attr() requires a global_flush_tlb() call after it.
@@ -846,7 +889,7 @@ void free_init_pages(char *what, unsigne
free_page(addr);
totalram_pages++;
}
- printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+ printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
}
void free_initmem(void)
--- head-2010-05-25.orig/arch/x86/mm/ioremap_32-xen.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/ioremap_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -13,6 +13,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/io.h>
+#include <linux/sched.h>
#include <asm/fixmap.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
--- head-2010-05-25.orig/arch/x86/mm/pgtable_32-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/pgtable_32-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -13,6 +13,7 @@
#include <linux/pagemap.h>
#include <linux/spinlock.h>
#include <linux/module.h>
+#include <linux/quicklist.h>
#include <asm/system.h>
#include <asm/pgtable.h>
@@ -218,8 +219,6 @@ void pmd_ctor(void *pmd, struct kmem_cac
* against pageattr.c; it is the unique case in which a valid change
* of kernel pagetables can't be lazily synchronized by vmalloc faults.
* vmalloc faults work because attached pagetables are never freed.
- * The locking scheme was chosen on the basis of manfred's
- * recommendations and having no core impact whatsoever.
* -- wli
*/
DEFINE_SPINLOCK(pgd_lock);
@@ -245,37 +244,54 @@ static inline void pgd_list_del(pgd_t *p
set_page_private(next, (unsigned long)pprev);
}
-void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused)
+
+
+#if (PTRS_PER_PMD == 1)
+/* Non-PAE pgd constructor */
+void pgd_ctor(void *pgd)
{
unsigned long flags;
- if (PTRS_PER_PMD > 1) {
- if (HAVE_SHARED_KERNEL_PMD)
- clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
- swapper_pg_dir + USER_PTRS_PER_PGD,
- KERNEL_PGD_PTRS);
- } else {
- spin_lock_irqsave(&pgd_lock, flags);
+ /* !PAE, no pagetable sharing */
+ memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
+
+ spin_lock_irqsave(&pgd_lock, flags);
+
+ /* must happen under lock */
+ clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
+ swapper_pg_dir + USER_PTRS_PER_PGD,
+ KERNEL_PGD_PTRS);
+
+ paravirt_alloc_pd_clone(__pa(pgd) >> PAGE_SHIFT,
+ __pa(swapper_pg_dir) >> PAGE_SHIFT,
+ USER_PTRS_PER_PGD,
+ KERNEL_PGD_PTRS);
+ pgd_list_add(pgd);
+ spin_unlock_irqrestore(&pgd_lock, flags);
+}
+#else /* PTRS_PER_PMD > 1 */
+/* PAE pgd constructor */
+void pgd_ctor(void *pgd)
+{
+ /* PAE, kernel PMD may be shared */
+
+ if (SHARED_KERNEL_PMD) {
clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
swapper_pg_dir + USER_PTRS_PER_PGD,
KERNEL_PGD_PTRS);
+ } else {
memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
-
- /* must happen under lock */
- paravirt_alloc_pd_clone(__pa(pgd) >> PAGE_SHIFT,
- __pa(swapper_pg_dir) >> PAGE_SHIFT,
- USER_PTRS_PER_PGD, PTRS_PER_PGD - USER_PTRS_PER_PGD);
-
- pgd_list_add(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
}
}
+#endif /* PTRS_PER_PMD */
-/* never called when PTRS_PER_PMD > 1 */
-void pgd_dtor(void *pgd, struct kmem_cache *cache, unsigned long unused)
+void pgd_dtor(void *pgd)
{
unsigned long flags; /* can be called from interrupt context */
+ if (SHARED_KERNEL_PMD)
+ return;
+
paravirt_release_pd(__pa(pgd) >> PAGE_SHIFT);
spin_lock_irqsave(&pgd_lock, flags);
pgd_list_del(pgd);
@@ -284,11 +300,46 @@ void pgd_dtor(void *pgd, struct kmem_cac
pgd_test_and_unpin(pgd);
}
+#define UNSHARED_PTRS_PER_PGD \
+ (SHARED_KERNEL_PMD ? USER_PTRS_PER_PGD : PTRS_PER_PGD)
+
+/* If we allocate a pmd for part of the kernel address space, then
+ make sure its initialized with the appropriate kernel mappings.
+ Otherwise use a cached zeroed pmd. */
+static pmd_t *pmd_cache_alloc(int idx)
+{
+ pmd_t *pmd;
+
+ if (idx >= USER_PTRS_PER_PGD) {
+ pmd = (pmd_t *)__get_free_page(GFP_KERNEL);
+
+#ifndef CONFIG_XEN
+ if (pmd)
+ memcpy(pmd,
+ (void *)pgd_page_vaddr(swapper_pg_dir[idx]),
+ sizeof(pmd_t) * PTRS_PER_PMD);
+#endif
+ } else
+ pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
+
+ return pmd;
+}
+
+static void pmd_cache_free(pmd_t *pmd, int idx)
+{
+ if (idx >= USER_PTRS_PER_PGD) {
+ make_lowmem_page_writable(pmd, XENFEAT_writable_page_tables);
+ memset(pmd, 0, PTRS_PER_PMD*sizeof(pmd_t));
+ free_page((unsigned long)pmd);
+ } else
+ kmem_cache_free(pmd_cache, pmd);
+}
+
pgd_t *pgd_alloc(struct mm_struct *mm)
{
int i;
- pgd_t *pgd = kmem_cache_alloc(pgd_cache, GFP_KERNEL);
- pmd_t **pmd;
+ pgd_t *pgd = quicklist_alloc(0, GFP_KERNEL, pgd_ctor);
+ pmd_t **pmds = NULL;
unsigned long flags;
pgd_test_and_unpin(pgd);
@@ -296,37 +347,40 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
if (PTRS_PER_PMD == 1 || !pgd)
return pgd;
- if (HAVE_SHARED_KERNEL_PMD) {
- for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
- pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
- if (!pmd)
- goto out_oom;
- paravirt_alloc_pd(__pa(pmd) >> PAGE_SHIFT);
- set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
+#ifdef CONFIG_XEN
+ if (!SHARED_KERNEL_PMD) {
+ /*
+ * We can race save/restore (if we sleep during a GFP_KERNEL memory
+ * allocation). We therefore store virtual addresses of pmds as they
+ * do not change across save/restore, and poke the machine addresses
+ * into the pgdir under the pgd_lock.
+ */
+ pmds = kmalloc(PTRS_PER_PGD * sizeof(pmd_t *), GFP_KERNEL);
+ if (!pmds) {
+ quicklist_free(0, pgd_dtor, pgd);
+ return NULL;
}
- return pgd;
- }
-
- /*
- * We can race save/restore (if we sleep during a GFP_KERNEL memory
- * allocation). We therefore store virtual addresses of pmds as they
- * do not change across save/restore, and poke the machine addresses
- * into the pgdir under the pgd_lock.
- */
- pmd = kmalloc(PTRS_PER_PGD * sizeof(pmd_t *), GFP_KERNEL);
- if (!pmd) {
- kmem_cache_free(pgd_cache, pgd);
- return NULL;
}
+#endif
/* Allocate pmds, remember virtual addresses. */
- for (i = 0; i < PTRS_PER_PGD; ++i) {
- pmd[i] = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
- if (!pmd[i])
+ for (i = 0; i < UNSHARED_PTRS_PER_PGD; ++i) {
+ pmd_t *pmd = pmd_cache_alloc(i);
+
+ if (!pmd)
goto out_oom;
+
paravirt_alloc_pd(__pa(pmd) >> PAGE_SHIFT);
+ if (pmds)
+ pmds[i] = pmd;
+ else
+ set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
}
+#ifdef CONFIG_XEN
+ if (SHARED_KERNEL_PMD)
+ return pgd;
+
spin_lock_irqsave(&pgd_lock, flags);
/* Protect against save/restore: move below 4GB under pgd_lock. */
@@ -341,44 +395,43 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
/* Copy kernel pmd contents and write-protect the new pmds. */
for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
- unsigned long v = (unsigned long)i << PGDIR_SHIFT;
- pgd_t *kpgd = pgd_offset_k(v);
- pud_t *kpud = pud_offset(kpgd, v);
- pmd_t *kpmd = pmd_offset(kpud, v);
- memcpy(pmd[i], kpmd, PAGE_SIZE);
+ memcpy(pmds[i],
+ (void *)pgd_page_vaddr(swapper_pg_dir[i]),
+ sizeof(pmd_t) * PTRS_PER_PMD);
make_lowmem_page_readonly(
- pmd[i], XENFEAT_writable_page_tables);
+ pmds[i], XENFEAT_writable_page_tables);
}
/* It is safe to poke machine addresses of pmds under the pmd_lock. */
for (i = 0; i < PTRS_PER_PGD; i++)
- set_pgd(&pgd[i], __pgd(1 + __pa(pmd[i])));
+ set_pgd(&pgd[i], __pgd(1 + __pa(pmds[i])));
/* Ensure this pgd gets picked up and pinned on save/restore. */
pgd_list_add(pgd);
spin_unlock_irqrestore(&pgd_lock, flags);
- kfree(pmd);
+ kfree(pmds);
+#endif
return pgd;
out_oom:
- if (HAVE_SHARED_KERNEL_PMD) {
+ if (!pmds) {
for (i--; i >= 0; i--) {
pgd_t pgdent = pgd[i];
void* pmd = (void *)__va(pgd_val(pgdent)-1);
paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
- kmem_cache_free(pmd_cache, pmd);
+ pmd_cache_free(pmd, i);
}
} else {
for (i--; i >= 0; i--) {
- paravirt_release_pd(__pa(pmd[i]) >> PAGE_SHIFT);
- kmem_cache_free(pmd_cache, pmd[i]);
+ paravirt_release_pd(__pa(pmds[i]) >> PAGE_SHIFT);
+ pmd_cache_free(pmds[i], i);
}
- kfree(pmd);
+ kfree(pmds);
}
- kmem_cache_free(pgd_cache, pgd);
+ quicklist_free(0, pgd_dtor, pgd);
return NULL;
}
@@ -398,35 +451,24 @@ void pgd_free(pgd_t *pgd)
/* in the PAE case user pgd entries are overwritten before usage */
if (PTRS_PER_PMD > 1) {
- for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
+ for (i = 0; i < UNSHARED_PTRS_PER_PGD; ++i) {
pgd_t pgdent = pgd[i];
void* pmd = (void *)__va(pgd_val(pgdent)-1);
paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
- kmem_cache_free(pmd_cache, pmd);
+ pmd_cache_free(pmd, i);
}
- if (!HAVE_SHARED_KERNEL_PMD) {
- unsigned long flags;
- spin_lock_irqsave(&pgd_lock, flags);
- pgd_list_del(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
-
- for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
- pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
- make_lowmem_page_writable(
- pmd, XENFEAT_writable_page_tables);
- memset(pmd, 0, PTRS_PER_PMD*sizeof(pmd_t));
- kmem_cache_free(pmd_cache, pmd);
- }
-
- if (!xen_feature(XENFEAT_pae_pgdir_above_4gb))
- xen_destroy_contiguous_region(
- (unsigned long)pgd, 0);
- }
+ if (!xen_feature(XENFEAT_pae_pgdir_above_4gb))
+ xen_destroy_contiguous_region((unsigned long)pgd, 0);
}
/* in the non-PAE case, free_pgtables() clears user pgd entries */
- kmem_cache_free(pgd_cache, pgd);
+ quicklist_free(0, pgd_dtor, pgd);
+}
+
+void check_pgt_cache(void)
+{
+ quicklist_trim(0, pgd_dtor, 25, 16);
}
void make_lowmem_page_readonly(void *va, unsigned int feature)
@@ -723,13 +765,13 @@ void mm_pin_all(void)
spin_unlock_irqrestore(&pgd_lock, flags);
}
-void _arch_dup_mmap(struct mm_struct *mm)
+void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
{
if (!test_bit(PG_pinned, &virt_to_page(mm->pgd)->flags))
mm_pin(mm);
}
-void _arch_exit_mmap(struct mm_struct *mm)
+void arch_exit_mmap(struct mm_struct *mm)
{
struct task_struct *tsk = current;
--- head-2010-05-25.orig/arch/x86/ia32/ia32entry-xen.S 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/ia32/ia32entry-xen.S 2010-03-24 15:09:15.000000000 +0100
@@ -431,11 +431,7 @@ ia32_sys_call_table:
.quad sys_symlink
.quad sys_lstat
.quad sys_readlink /* 85 */
-#ifdef CONFIG_IA32_AOUT
.quad sys_uselib
-#else
- .quad quiet_ni_syscall
-#endif
.quad sys_swapon
.quad sys_reboot
.quad compat_sys_old_readdir
@@ -574,7 +570,7 @@ ia32_sys_call_table:
.quad quiet_ni_syscall /* tux */
.quad quiet_ni_syscall /* security */
.quad sys_gettid
- .quad sys_readahead /* 225 */
+ .quad sys32_readahead /* 225 */
.quad sys_setxattr
.quad sys_lsetxattr
.quad sys_fsetxattr
@@ -599,7 +595,7 @@ ia32_sys_call_table:
.quad compat_sys_io_getevents
.quad compat_sys_io_submit
.quad sys_io_cancel
- .quad sys_fadvise64 /* 250 */
+ .quad sys32_fadvise64 /* 250 */
.quad quiet_ni_syscall /* free_huge_pages */
.quad sys_exit_group
.quad sys32_lookup_dcookie
@@ -663,10 +659,14 @@ ia32_sys_call_table:
.quad compat_sys_set_robust_list
.quad compat_sys_get_robust_list
.quad sys_splice
- .quad sys_sync_file_range
- .quad sys_tee
+ .quad sys32_sync_file_range
+ .quad sys_tee /* 315 */
.quad compat_sys_vmsplice
.quad compat_sys_move_pages
.quad sys_getcpu
.quad sys_epoll_pwait
-ia32_syscall_end:
+ .quad compat_sys_utimensat /* 320 */
+ .quad compat_sys_signalfd
+ .quad compat_sys_timerfd
+ .quad sys_eventfd
+ia32_syscall_end:
--- head-2010-05-25.orig/arch/x86/kernel/acpi/sleep_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/acpi/sleep_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -60,19 +60,6 @@ unsigned long acpi_video_flags;
extern char wakeup_start, wakeup_end;
extern unsigned long acpi_copy_wakeup_routine(unsigned long);
-
-static pgd_t low_ptr;
-
-static void init_low_mapping(void)
-{
- pgd_t *slot0 = pgd_offset(current->mm, 0UL);
- low_ptr = *slot0;
- /* FIXME: We're playing with the current task's page tables here, which
- * is potentially dangerous on SMP systems.
- */
- set_pgd(slot0, *pgd_offset(current->mm, PAGE_OFFSET));
- local_flush_tlb();
-}
#endif
/**
@@ -84,8 +71,6 @@ static void init_low_mapping(void)
int acpi_save_state_mem(void)
{
#ifndef CONFIG_ACPI_PV_SLEEP
- init_low_mapping();
-
memcpy((void *)acpi_wakeup_address, &wakeup_start,
&wakeup_end - &wakeup_start);
acpi_copy_wakeup_routine(acpi_wakeup_address);
@@ -98,10 +83,6 @@ int acpi_save_state_mem(void)
*/
void acpi_restore_state_mem(void)
{
-#ifndef CONFIG_ACPI_PV_SLEEP
- set_pgd(pgd_offset(current->mm, 0UL), low_ptr);
- local_flush_tlb();
-#endif
}
/**
@@ -115,10 +96,11 @@ void acpi_restore_state_mem(void)
void __init acpi_reserve_bootmem(void)
{
#ifndef CONFIG_ACPI_PV_SLEEP
- acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE);
- if ((&wakeup_end - &wakeup_start) > PAGE_SIZE)
+ acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE*2);
+ if ((&wakeup_end - &wakeup_start) > (PAGE_SIZE*2))
printk(KERN_CRIT
- "ACPI: Wakeup code way too big, will crash on attempt to suspend\n");
+ "ACPI: Wakeup code way too big, will crash on attempt"
+ " to suspend\n");
#endif
}
--- head-2010-05-25.orig/arch/x86/kernel/e820_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/e820_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -17,6 +17,8 @@
#include <linux/kexec.h>
#include <linux/module.h>
#include <linux/mm.h>
+#include <linux/suspend.h>
+#include <linux/pfn.h>
#include <asm/pgtable.h>
#include <asm/page.h>
@@ -28,7 +30,7 @@
struct e820map e820 __initdata;
#ifdef CONFIG_XEN
-struct e820map machine_e820 __initdata;
+struct e820map machine_e820;
#endif
/*
@@ -293,22 +295,6 @@ void __init e820_reserve_resources(struc
}
#ifndef CONFIG_XEN
-/* Mark pages corresponding to given address range as nosave */
-static void __init
-e820_mark_nosave_range(unsigned long start, unsigned long end)
-{
- unsigned long pfn, max_pfn;
-
- if (start >= end)
- return;
-
- printk("Nosave address range: %016lx - %016lx\n", start, end);
- max_pfn = end >> PAGE_SHIFT;
- for (pfn = start >> PAGE_SHIFT; pfn < max_pfn; pfn++)
- if (pfn_valid(pfn))
- SetPageNosave(pfn_to_page(pfn));
-}
-
/*
* Find the ranges of physical addresses that do not correspond to
* e820 RAM areas and mark the corresponding pages as nosave for software
@@ -327,13 +313,13 @@ void __init e820_mark_nosave_regions(voi
struct e820entry *ei = &e820.map[i];
if (paddr < ei->addr)
- e820_mark_nosave_range(paddr,
- round_up(ei->addr, PAGE_SIZE));
+ register_nosave_region(PFN_DOWN(paddr),
+ PFN_UP(ei->addr));
paddr = round_down(ei->addr + ei->size, PAGE_SIZE);
if (ei->type != E820_RAM)
- e820_mark_nosave_range(round_up(ei->addr, PAGE_SIZE),
- paddr);
+ register_nosave_region(PFN_UP(ei->addr),
+ PFN_DOWN(paddr));
if (paddr >= (end_pfn << PAGE_SHIFT))
break;
--- head-2010-05-25.orig/arch/x86/kernel/early_printk-xen.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/early_printk-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -11,13 +11,12 @@
#ifdef __i386__
#include <asm/setup.h>
-#define VGABASE (__ISA_IO_base + 0xb8000)
#else
#include <asm/bootsetup.h>
-#define VGABASE ((void __iomem *)0xffffffff800b8000UL)
#endif
-
#ifndef CONFIG_XEN
+#define VGABASE (__ISA_IO_base + 0xb8000)
+
static int max_ypos = 25, max_xpos = 80;
static int current_ypos = 25, current_xpos = 0;
@@ -93,9 +92,9 @@ static int early_serial_putc(unsigned ch
static void early_serial_write(struct console *con, const char *s, unsigned n)
{
while (*s && n-- > 0) {
- early_serial_putc(*s);
if (*s == '\n')
early_serial_putc('\r');
+ early_serial_putc(*s);
s++;
}
}
@@ -205,7 +204,7 @@ static noinline long simnow(long cmd, lo
return ret;
}
-void __init simnow_init(char *str)
+static void __init simnow_init(char *str)
{
char *fn = "klog";
if (*str == '=')
@@ -277,22 +276,12 @@ static int __init setup_early_printk(cha
early_console = &simnow_console;
keep_early = 1;
}
+
+ if (keep_early)
+ early_console->flags &= ~CON_BOOT;
+ else
+ early_console->flags |= CON_BOOT;
register_console(early_console);
return 0;
}
-
early_param("earlyprintk", setup_early_printk);
-
-void __init disable_early_printk(void)
-{
- if (!early_console_initialized || !early_console)
- return;
- if (!keep_early) {
- printk("disabling early console\n");
- unregister_console(early_console);
- early_console_initialized = 0;
- } else {
- printk("keeping early console\n");
- }
-}
-
--- head-2010-05-25.orig/arch/x86/kernel/entry_64-xen.S 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/entry_64-xen.S 2010-03-24 15:09:15.000000000 +0100
@@ -1249,3 +1249,23 @@ ENTRY(call_softirq)
ret
CFI_ENDPROC
ENDPROC(call_softirq)
+
+#ifndef CONFIG_IA32_EMULATION
+KPROBE_ENTRY(ignore_sysret)
+ CFI_STARTPROC simple
+ CFI_SIGNAL_FRAME
+ CFI_DEF_CFA rsp,SS+8-RIP+16
+/* CFI_REL_OFFSET ss,SS-RIP+16 */
+ CFI_REL_OFFSET rsp,RSP-RIP+16
+/* CFI_REL_OFFSET rflags,EFLAGS-RIP+16 */
+/* CFI_REL_OFFSET cs,CS-RIP+16 */
+ CFI_REL_OFFSET rip,RIP-RIP+16
+ popq %rcx
+ CFI_ADJUST_CFA_OFFSET -8
+ popq %r11
+ CFI_ADJUST_CFA_OFFSET -8
+ mov $-ENOSYS,%eax
+ HYPERVISOR_IRET 0
+ CFI_ENDPROC
+ENDPROC(ignore_sysret)
+#endif
--- head-2010-05-25.orig/arch/x86/kernel/head_64-xen.S 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/head_64-xen.S 2010-03-24 15:09:15.000000000 +0100
@@ -5,6 +5,7 @@
* Copyright (C) 2000 Pavel Machek <pavel@suse.cz>
* Copyright (C) 2000 Karsten Keil <kkeil@suse.de>
* Copyright (C) 2001,2002 Andi Kleen <ak@suse.de>
+ * Copyright (C) 2005 Eric Biederman <ebiederm@xmission.com>
* Jun Nakajima <jun.nakajima@intel.com>
* Modified for Xen
*/
@@ -34,27 +35,15 @@ startup_64:
pushq $0 # fake return address
jmp x86_64_start_kernel
-#ifdef CONFIG_ACPI_SLEEP
-.org 0xf00
- .globl pGDT32
-pGDT32:
- .word gdt_end-cpu_gdt_table-1
- .long cpu_gdt_table-__START_KERNEL_map
-#endif
-ENTRY(stext)
-ENTRY(_stext)
+.balign PAGE_SIZE
- $page = 0
#define NEXT_PAGE(name) \
- $page = $page + 1; \
- .org $page * 0x1000; \
- phys_##name = $page * 0x1000 + __PHYSICAL_START; \
+ .balign PAGE_SIZE; \
+ phys_##name = . - .bootstrap.text; \
ENTRY(name)
NEXT_PAGE(init_level4_pgt)
- /* This gets initialized in x86_64_start_kernel */
.fill 512,8,0
-NEXT_PAGE(init_level4_user_pgt)
/*
* We update two pgd entries to make kernel and user pgd consistent
* at pgd_populate(). It can be used for kernel modules. So we place
@@ -98,14 +87,6 @@ NEXT_PAGE(hypercall_page)
#undef NEXT_PAGE
.data
-/* Just dummy symbol to allow compilation. Not used in sleep path */
-#ifdef CONFIG_ACPI_SLEEP
- .align PAGE_SIZE
-ENTRY(wakeup_level4_pgt)
- .fill 512,8,0
-#endif
-
- .data
.align 16
.globl cpu_gdt_descr
@@ -133,13 +114,13 @@ gdt:
ENTRY(cpu_gdt_table)
.quad 0x0000000000000000 /* NULL descriptor */
+ .quad 0x00cf9b000000ffff /* __KERNEL32_CS */
+ .quad 0x00af9b000000ffff /* __KERNEL_CS */
+ .quad 0x00cf93000000ffff /* __KERNEL_DS */
+ .quad 0x00cffb000000ffff /* __USER32_CS */
+ .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */
+ .quad 0x00affb000000ffff /* __USER_CS */
.quad 0x0 /* unused */
- .quad 0x00af9a000000ffff /* __KERNEL_CS */
- .quad 0x00cf92000000ffff /* __KERNEL_DS */
- .quad 0x00cffa000000ffff /* __USER32_CS */
- .quad 0x00cff2000000ffff /* __USER_DS, __USER32_DS */
- .quad 0x00affa000000ffff /* __USER_CS */
- .quad 0x00cf9a000000ffff /* __KERNEL32_CS */
.quad 0,0 /* TSS */
.quad 0,0 /* LDT */
.quad 0,0,0 /* three TLS descriptors */
@@ -162,14 +143,11 @@ ENTRY(empty_zero_page)
* __xen_guest information
*/
.macro utoh value
- .if (\value) < 0 || (\value) >= 0x10
- utoh (((\value)>>4)&0x0fffffffffffffff)
- .endif
- .if ((\value) & 0xf) < 10
- .byte '0' + ((\value) & 0xf)
- .else
- .byte 'A' + ((\value) & 0xf) - 10
- .endif
+ i = 64
+ .rept 16
+ i = i - 4
+ .byte '0' + ((((\value) >> i) & 0xf) > 9) * ('0' - 'A' + 10) + (((\value) >> i) & 0xf)
+ .endr
.endm
.section __xen_guest
--- head-2010-05-25.orig/arch/x86/kernel/head64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/head64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -25,13 +25,21 @@
#include <asm/setup.h>
#include <asm/desc.h>
#include <asm/pgtable.h>
+#include <asm/tlbflush.h>
#include <asm/sections.h>
unsigned long start_pfn;
+#ifndef CONFIG_XEN
+static void __init zap_identity_mappings(void)
+{
+ pgd_t *pgd = pgd_offset_k(0UL);
+ pgd_clear(pgd);
+ __flush_tlb();
+}
+
/* Don't add a printk in there. printk relies on the PDA which is not initialized
yet. */
-#if 0
static void __init clear_bss(void)
{
memset(__bss_start, 0,
@@ -40,26 +48,25 @@ static void __init clear_bss(void)
#endif
#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
-#define OLD_CL_MAGIC_ADDR 0x90020
+#define OLD_CL_MAGIC_ADDR 0x20
#define OLD_CL_MAGIC 0xA33F
-#define OLD_CL_BASE_ADDR 0x90000
-#define OLD_CL_OFFSET 0x90022
+#define OLD_CL_OFFSET 0x22
static void __init copy_bootdata(char *real_mode_data)
{
#ifndef CONFIG_XEN
- int new_data;
+ unsigned long new_data;
char * command_line;
memcpy(x86_boot_params, real_mode_data, BOOT_PARAM_SIZE);
- new_data = *(int *) (x86_boot_params + NEW_CL_POINTER);
+ new_data = *(u32 *) (x86_boot_params + NEW_CL_POINTER);
if (!new_data) {
- if (OLD_CL_MAGIC != * (u16 *) OLD_CL_MAGIC_ADDR) {
+ if (OLD_CL_MAGIC != *(u16 *)(real_mode_data + OLD_CL_MAGIC_ADDR)) {
return;
}
- new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET;
+ new_data = __pa(real_mode_data) + *(u16 *)(real_mode_data + OLD_CL_OFFSET);
}
- command_line = (char *) ((u64)(new_data));
+ command_line = __va(new_data);
memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
#else
int max_cmdline;
@@ -101,10 +108,13 @@ void __init x86_64_start_kernel(char * r
while ((1UL << machine_to_phys_order) < machine_to_phys_nr_ents )
machine_to_phys_order++;
-#if 0
+#ifndef CONFIG_XEN
/* clear bss before set_intr_gate with early_idt_handler */
clear_bss();
+ /* Make NULL pointers segfault */
+ zap_identity_mappings();
+
for (i = 0; i < IDT_ENTRIES; i++)
set_intr_gate(i, early_idt_handler);
asm volatile("lidt %0" :: "m" (idt_descr));
@@ -116,7 +126,7 @@ void __init x86_64_start_kernel(char * r
cpu_pda(i) = &boot_cpu_pda[i];
pda_init(0);
- copy_bootdata(real_mode_data);
+ copy_bootdata(__va(real_mode_data));
#ifdef CONFIG_SMP
cpu_set(0, cpu_online_map);
#endif
--- head-2010-05-25.orig/arch/x86/kernel/io_apic_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/io_apic_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -25,7 +25,6 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/sched.h>
-#include <linux/smp_lock.h>
#include <linux/pci.h>
#include <linux/mc146818rtc.h>
#include <linux/acpi.h>
@@ -904,10 +903,6 @@ static void __init setup_ExtINT_IRQ0_pin
enable_8259A_irq(0);
}
-void __init UNEXPECTED_IO_APIC(void)
-{
-}
-
void __apicdebuginit print_IO_APIC(void)
{
int apic, i;
@@ -943,40 +938,16 @@ void __apicdebuginit print_IO_APIC(void)
printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].mpc_apicid);
printk(KERN_DEBUG ".... register #00: %08X\n", reg_00.raw);
printk(KERN_DEBUG "....... : physical APIC id: %02X\n", reg_00.bits.ID);
- if (reg_00.bits.__reserved_1 || reg_00.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
printk(KERN_DEBUG ".... register #01: %08X\n", *(int *)&reg_01);
printk(KERN_DEBUG "....... : max redirection entries: %04X\n", reg_01.bits.entries);
- if ( (reg_01.bits.entries != 0x0f) && /* older (Neptune) boards */
- (reg_01.bits.entries != 0x17) && /* typical ISA+PCI boards */
- (reg_01.bits.entries != 0x1b) && /* Compaq Proliant boards */
- (reg_01.bits.entries != 0x1f) && /* dual Xeon boards */
- (reg_01.bits.entries != 0x22) && /* bigger Xeon boards */
- (reg_01.bits.entries != 0x2E) &&
- (reg_01.bits.entries != 0x3F) &&
- (reg_01.bits.entries != 0x03)
- )
- UNEXPECTED_IO_APIC();
printk(KERN_DEBUG "....... : PRQ implemented: %X\n", reg_01.bits.PRQ);
printk(KERN_DEBUG "....... : IO APIC version: %04X\n", reg_01.bits.version);
- if ( (reg_01.bits.version != 0x01) && /* 82489DX IO-APICs */
- (reg_01.bits.version != 0x02) && /* 82801BA IO-APICs (ICH2) */
- (reg_01.bits.version != 0x10) && /* oldest IO-APICs */
- (reg_01.bits.version != 0x11) && /* Pentium/Pro IO-APICs */
- (reg_01.bits.version != 0x13) && /* Xeon IO-APICs */
- (reg_01.bits.version != 0x20) /* Intel P64H (82806 AA) */
- )
- UNEXPECTED_IO_APIC();
- if (reg_01.bits.__reserved_1 || reg_01.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
if (reg_01.bits.version >= 0x10) {
printk(KERN_DEBUG ".... register #02: %08X\n", reg_02.raw);
printk(KERN_DEBUG "....... : arbitration: %02X\n", reg_02.bits.arbitration);
- if (reg_02.bits.__reserved_1 || reg_02.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
}
printk(KERN_DEBUG ".... IRQ redirection table:\n");
@@ -1408,8 +1379,7 @@ static void irq_complete_move(unsigned i
vector = ~get_irq_regs()->orig_rax;
me = smp_processor_id();
- if ((vector == cfg->vector) &&
- cpu_isset(smp_processor_id(), cfg->domain)) {
+ if ((vector == cfg->vector) && cpu_isset(me, cfg->domain)) {
cpumask_t cleanup_mask;
cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
@@ -1444,7 +1414,7 @@ static void ack_apic_level(unsigned int
/*
* We must acknowledge the irq before we move it or the acknowledge will
- * not propogate properly.
+ * not propagate properly.
*/
ack_APIC_irq();
@@ -1527,6 +1497,7 @@ static void ack_lapic_irq (unsigned int
static void end_lapic_irq (unsigned int i) { /* nothing */ }
static struct hw_interrupt_type lapic_irq_type __read_mostly = {
+ .name = "local-APIC",
.typename = "local-APIC-edge",
.startup = NULL, /* startup_irq() not used for IRQ0 */
.shutdown = NULL, /* shutdown_irq() not used for IRQ0 */
@@ -1998,18 +1969,18 @@ int arch_setup_msi_irq(struct pci_dev *d
if (irq < 0)
return irq;
- set_irq_msi(irq, desc);
ret = msi_compose_msg(dev, irq, &msg);
if (ret < 0) {
destroy_irq(irq);
return ret;
}
+ set_irq_msi(irq, desc);
write_msi_msg(irq, &msg);
set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq, "edge");
- return irq;
+ return 0;
}
void arch_teardown_msi_irq(unsigned int irq)
--- head-2010-05-25.orig/arch/x86/kernel/ioport_64-xen.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/ioport_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -13,10 +13,10 @@
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/thread_info.h>
+#include <linux/syscalls.h>
#include <xen/interface/physdev.h>
/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
--- head-2010-05-25.orig/arch/x86/kernel/ldt_64-xen.c 2007-06-12 13:13:01.000000000 +0200
+++ head-2010-05-25/arch/x86/kernel/ldt_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -13,7 +13,6 @@
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
--- head-2010-05-25.orig/arch/x86/kernel/mpparse_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/mpparse_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -17,7 +17,6 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
#include <linux/acpi.h>
@@ -307,7 +306,7 @@ static int __init smp_read_mpc(struct mp
}
}
}
- clustered_apic_check();
+ setup_apic_routing();
if (!num_processors)
printk(KERN_ERR "MPTABLE: no processors registered!\n");
return num_processors;
--- head-2010-05-25.orig/arch/x86/kernel/process_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/process_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -39,6 +39,7 @@
#include <linux/random.h>
#include <linux/notifier.h>
#include <linux/kprobes.h>
+#include <linux/kdebug.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -49,7 +50,6 @@
#include <asm/mmu_context.h>
#include <asm/pda.h>
#include <asm/prctl.h>
-#include <asm/kdebug.h>
#include <xen/interface/platform.h>
#include <xen/interface/physdev.h>
#include <xen/interface/vcpu.h>
@@ -232,16 +232,18 @@ void __cpuinit select_idle_routine(const
static int __init idle_setup (char *str)
{
- if (!strncmp(str, "poll", 4)) {
+ if (!strcmp(str, "poll")) {
printk("using polling idle threads.\n");
pm_idle = poll_idle;
- }
+ } else if (!strcmp(str, "mwait"))
+ force_mwait = 1;
+ else
+ return -1;
boot_option_idle_override = 1;
- return 1;
+ return 0;
}
-
-__setup("idle=", idle_setup);
+early_param("idle", idle_setup);
/* Prints also some state that isn't saved in the pt_regs */
void __show_regs(struct pt_regs * regs)
@@ -546,7 +548,7 @@ __switch_to(struct task_struct *prev_p,
* The AMD workaround requires it to be after DS reload, or
* after DS has been cleared, which we do in __prepare_arch_switch.
*/
- if (prev_p->thread_info->status & TS_USEDFPU) {
+ if (task_thread_info(prev_p)->status & TS_USEDFPU) {
__save_init_fpu(prev_p); /* _not_ save_init_fpu() */
mcl->op = __HYPERVISOR_fpu_taskswitch;
mcl->args[0] = 1;
--- head-2010-05-25.orig/arch/x86/kernel/setup_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/setup_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -120,6 +120,8 @@ int bootloader_type;
unsigned long saved_video_mode;
+int force_mwait __cpuinitdata;
+
/*
* Early DMI memory
*/
@@ -254,10 +256,10 @@ static void discover_ebda(void)
* there is a real-mode segmented pointer pointing to the
* 4K EBDA area at 0x40E
*/
- ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER;
+ ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER);
ebda_addr <<= 4;
- ebda_size = *(unsigned short *)(unsigned long)ebda_addr;
+ ebda_size = *(unsigned short *)__va(ebda_addr);
/* Round EBDA up to pages */
if (ebda_size == 0)
@@ -411,15 +413,8 @@ void __init setup_arch(char **cmdline_p)
#endif
#ifdef CONFIG_SMP
- /*
- * But first pinch a few for the stack/trampoline stuff
- * FIXME: Don't need the extra page at 4K, but need to fix
- * trampoline before removing it. (see the GDT stuff)
- */
- reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE);
-
/* Reserve SMP trampoline */
- reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE);
+ reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, 2*PAGE_SIZE);
#endif
#endif
@@ -571,8 +566,6 @@ void __init setup_arch(char **cmdline_p)
early_quirks();
#endif
- zap_low_mappings(0);
-
/*
* set this early, so we dont allocate cpu0
* if MADT list doesnt list BSP first
@@ -865,6 +858,10 @@ static void __cpuinit init_amd(struct cp
/* RDTSC can be speculated around */
clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
+
+ /* Family 10 doesn't support C states in MWAIT so don't use it */
+ if (c->x86 == 0x10 && !force_mwait)
+ clear_bit(X86_FEATURE_MWAIT, &c->x86_capability);
}
static void __cpuinit detect_ht(struct cpuinfo_x86 *c)
@@ -1149,9 +1146,7 @@ void __cpuinit identify_cpu(struct cpuin
#ifdef CONFIG_X86_MCE
mcheck_init(c);
#endif
- if (c == &boot_cpu_data)
- mtrr_bp_init();
- else
+ if (c != &boot_cpu_data)
mtrr_ap_init();
#ifdef CONFIG_NUMA
numa_add_cpu(smp_processor_id());
@@ -1242,9 +1237,8 @@ static int show_cpuinfo(struct seq_file
"stc",
"100mhzsteps",
"hwpstate",
- NULL, /* tsc invariant mapped to constant_tsc */
- NULL,
- /* nothing */ /* constant_tsc - moved to flags */
+ "", /* tsc invariant mapped to constant_tsc */
+ /* nothing */
};
--- head-2010-05-25.orig/arch/x86/kernel/setup64-xen.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/setup64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -113,9 +113,9 @@ void __init setup_per_cpu_areas(void)
if (!NODE_DATA(cpu_to_node(i))) {
printk("cpu with no node %d, num_online_nodes %d\n",
i, num_online_nodes());
- ptr = alloc_bootmem(size);
+ ptr = alloc_bootmem_pages(size);
} else {
- ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size);
+ ptr = alloc_bootmem_pages_node(NODE_DATA(cpu_to_node(i)), size);
}
if (!ptr)
panic("Cannot allocate cpu data for CPU %d\n", i);
@@ -208,6 +208,8 @@ char boot_exception_stacks[(N_EXCEPTION_
__attribute__((section(".bss.page_aligned")));
#endif
+extern asmlinkage void ignore_sysret(void);
+
/* May not be marked __init: used by software suspend */
void syscall_init(void)
{
@@ -219,12 +221,22 @@ void syscall_init(void)
*/
wrmsrl(MSR_STAR, ((u64)__USER32_CS)<<48 | ((u64)__KERNEL_CS)<<32);
wrmsrl(MSR_LSTAR, system_call);
+ wrmsrl(MSR_CSTAR, ignore_sysret);
/* Flags to clear on syscall */
wrmsrl(MSR_SYSCALL_MASK, EF_TF|EF_DF|EF_IE|0x3000);
#endif
#ifdef CONFIG_IA32_EMULATION
syscall32_cpu_init ();
+#else
+ {
+ static const struct callback_register cstar = {
+ .type = CALLBACKTYPE_syscall32,
+ .address = (unsigned long)ignore_sysret
+ };
+ if (HYPERVISOR_callback_op(CALLBACKOP_register, &cstar))
+ printk(KERN_WARNING "Unable to register CSTAR callback\n");
+ }
#endif
}
@@ -262,7 +274,6 @@ void __cpuinit cpu_init (void)
/* CPU 0 is initialised in head64.c */
if (cpu != 0) {
pda_init(cpu);
- zap_low_mappings(cpu);
}
#ifndef CONFIG_X86_NO_TSS
else
--- head-2010-05-25.orig/arch/x86/kernel/smp_64-xen.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/smp_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -14,7 +14,6 @@
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/smp.h>
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
@@ -457,44 +456,36 @@ int smp_call_function (void (*func) (voi
}
EXPORT_SYMBOL(smp_call_function);
-void smp_stop_cpu(void)
+static void stop_this_cpu(void *dummy)
{
- unsigned long flags;
+ local_irq_disable();
/*
* Remove this CPU:
*/
cpu_clear(smp_processor_id(), cpu_online_map);
- local_irq_save(flags);
disable_all_local_evtchn();
- local_irq_restore(flags);
-}
-
-static void smp_really_stop_cpu(void *dummy)
-{
- smp_stop_cpu();
for (;;)
halt();
}
void smp_send_stop(void)
{
- int nolock = 0;
+ int nolock;
+ unsigned long flags;
+
#ifndef CONFIG_XEN
if (reboot_force)
return;
#endif
+
/* Don't deadlock on the call lock in panic */
- if (!spin_trylock(&call_lock)) {
- /* ignore locking because we have panicked anyways */
- nolock = 1;
- }
- __smp_call_function(smp_really_stop_cpu, NULL, 0, 0);
+ nolock = !spin_trylock(&call_lock);
+ local_irq_save(flags);
+ __smp_call_function(stop_this_cpu, NULL, 0, 0);
if (!nolock)
spin_unlock(&call_lock);
-
- local_irq_disable();
disable_all_local_evtchn();
- local_irq_enable();
+ local_irq_restore(flags);
}
/*
--- head-2010-05-25.orig/arch/x86/kernel/traps_64-xen.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/traps_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -32,6 +32,7 @@
#include <linux/unwind.h>
#include <linux/uaccess.h>
#include <linux/bug.h>
+#include <linux/kdebug.h>
#include <asm/system.h>
#include <asm/io.h>
@@ -39,7 +40,6 @@
#include <asm/debugreg.h>
#include <asm/desc.h>
#include <asm/i387.h>
-#include <asm/kdebug.h>
#include <asm/processor.h>
#include <asm/unwind.h>
#include <asm/smp.h>
@@ -71,22 +71,6 @@ asmlinkage void alignment_check(void);
asmlinkage void machine_check(void);
asmlinkage void spurious_interrupt_bug(void);
-ATOMIC_NOTIFIER_HEAD(die_chain);
-EXPORT_SYMBOL(die_chain);
-
-int register_die_notifier(struct notifier_block *nb)
-{
- vmalloc_sync_all();
- return atomic_notifier_chain_register(&die_chain, nb);
-}
-EXPORT_SYMBOL(register_die_notifier); /* used modular by kdb */
-
-int unregister_die_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_unregister(&die_chain, nb);
-}
-EXPORT_SYMBOL(unregister_die_notifier); /* used modular by kdb */
-
static inline void conditional_sti(struct pt_regs *regs)
{
if (regs->eflags & X86_EFLAGS_IF)
@@ -428,8 +412,7 @@ void show_registers(struct pt_regs *regs
const int cpu = smp_processor_id();
struct task_struct *cur = cpu_pda(cpu)->pcurrent;
- rsp = regs->rsp;
-
+ rsp = regs->rsp;
printk("CPU %d ", cpu);
__show_regs(regs);
printk("Process %s (pid: %d, threadinfo %p, task %p)\n",
@@ -440,7 +423,6 @@ void show_registers(struct pt_regs *regs
* time of the fault..
*/
if (in_kernel) {
-
printk("Stack: ");
_show_stack(NULL, regs, (unsigned long*)rsp);
@@ -485,13 +467,14 @@ static unsigned int die_nest_count;
unsigned __kprobes long oops_begin(void)
{
- int cpu = smp_processor_id();
+ int cpu;
unsigned long flags;
oops_enter();
/* racy, but better than risking deadlock. */
local_irq_save(flags);
+ cpu = smp_processor_id();
if (!spin_trylock(&die_lock)) {
if (cpu == die_owner)
/* nested oops. should stop eventually */;
@@ -585,10 +568,20 @@ static void __kprobes do_trap(int trapnr
{
struct task_struct *tsk = current;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = trapnr;
-
if (user_mode(regs)) {
+ /*
+ * We want error_code and trap_no set for userspace
+ * faults and kernelspace faults which result in
+ * die(), but not kernelspace faults which are fixed
+ * up. die() gives the process no chance to handle
+ * the signal and notice the kernel fault information,
+ * so that won't result in polluting the information
+ * about previously queued, but not yet delivered,
+ * faults. See also do_general_protection below.
+ */
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_no = trapnr;
+
if (exception_trace && unhandled_signal(tsk, signr))
printk(KERN_INFO
"%s[%d] trap %s rip:%lx rsp:%lx error:%lx\n",
@@ -609,8 +602,11 @@ static void __kprobes do_trap(int trapnr
fixup = search_exception_tables(regs->rip);
if (fixup)
regs->rip = fixup->fixup;
- else
+ else {
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_no = trapnr;
die(str, regs, error_code);
+ }
return;
}
}
@@ -686,10 +682,10 @@ asmlinkage void __kprobes do_general_pro
conditional_sti(regs);
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = 13;
-
if (user_mode(regs)) {
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_no = 13;
+
if (exception_trace && unhandled_signal(tsk, SIGSEGV))
printk(KERN_INFO
"%s[%d] general protection rip:%lx rsp:%lx error:%lx\n",
@@ -708,6 +704,9 @@ asmlinkage void __kprobes do_general_pro
regs->rip = fixup->fixup;
return;
}
+
+ tsk->thread.error_code = error_code;
+ tsk->thread.trap_no = 13;
if (notify_die(DIE_GPF, "general protection fault", regs,
error_code, 13, SIGSEGV) == NOTIFY_STOP)
return;
--- head-2010-05-25.orig/arch/x86/kernel/vsyscall_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/kernel/vsyscall_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -45,14 +45,34 @@
#define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr)))
#define __syscall_clobber "r11","rcx","memory"
+#define __pa_vsymbol(x) \
+ ({unsigned long v; \
+ extern char __vsyscall_0; \
+ asm("" : "=r" (v) : "0" (x)); \
+ ((v - VSYSCALL_FIRST_PAGE) + __pa_symbol(&__vsyscall_0)); })
+/*
+ * vsyscall_gtod_data contains data that is :
+ * - readonly from vsyscalls
+ * - writen by timer interrupt or systcl (/proc/sys/kernel/vsyscall64)
+ * Try to keep this structure as small as possible to avoid cache line ping pongs
+ */
struct vsyscall_gtod_data_t {
- seqlock_t lock;
- int sysctl_enabled;
- struct timeval wall_time_tv;
+ seqlock_t lock;
+
+ /* open coded 'struct timespec' */
+ time_t wall_time_sec;
+ u32 wall_time_nsec;
+
+ int sysctl_enabled;
struct timezone sys_tz;
- cycle_t offset_base;
- struct clocksource clock;
+ struct { /* extract of a clocksource struct */
+ cycle_t (*vread)(void);
+ cycle_t cycle_last;
+ cycle_t mask;
+ u32 mult;
+ u32 shift;
+ } clock;
};
int __vgetcpu_mode __section_vgetcpu_mode;
@@ -68,9 +88,13 @@ void update_vsyscall(struct timespec *wa
write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags);
/* copy vsyscall data */
- vsyscall_gtod_data.clock = *clock;
- vsyscall_gtod_data.wall_time_tv.tv_sec = wall_time->tv_sec;
- vsyscall_gtod_data.wall_time_tv.tv_usec = wall_time->tv_nsec/1000;
+ vsyscall_gtod_data.clock.vread = clock->vread;
+ vsyscall_gtod_data.clock.cycle_last = clock->cycle_last;
+ vsyscall_gtod_data.clock.mask = clock->mask;
+ vsyscall_gtod_data.clock.mult = clock->mult;
+ vsyscall_gtod_data.clock.shift = clock->shift;
+ vsyscall_gtod_data.wall_time_sec = wall_time->tv_sec;
+ vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec;
vsyscall_gtod_data.sys_tz = sys_tz;
write_sequnlock_irqrestore(&vsyscall_gtod_data.lock, flags);
}
@@ -105,7 +129,8 @@ static __always_inline long time_syscall
static __always_inline void do_vgettimeofday(struct timeval * tv)
{
cycle_t now, base, mask, cycle_delta;
- unsigned long seq, mult, shift, nsec_delta;
+ unsigned seq;
+ unsigned long mult, shift, nsec;
cycle_t (*vread)(void);
do {
seq = read_seqbegin(&__vsyscall_gtod_data.lock);
@@ -121,21 +146,20 @@ static __always_inline void do_vgettimeo
mult = __vsyscall_gtod_data.clock.mult;
shift = __vsyscall_gtod_data.clock.shift;
- *tv = __vsyscall_gtod_data.wall_time_tv;
-
+ tv->tv_sec = __vsyscall_gtod_data.wall_time_sec;
+ nsec = __vsyscall_gtod_data.wall_time_nsec;
} while (read_seqretry(&__vsyscall_gtod_data.lock, seq));
/* calculate interval: */
cycle_delta = (now - base) & mask;
/* convert to nsecs: */
- nsec_delta = (cycle_delta * mult) >> shift;
+ nsec += (cycle_delta * mult) >> shift;
- /* convert to usecs and add to timespec: */
- tv->tv_usec += nsec_delta / NSEC_PER_USEC;
- while (tv->tv_usec > USEC_PER_SEC) {
+ while (nsec >= NSEC_PER_SEC) {
tv->tv_sec += 1;
- tv->tv_usec -= USEC_PER_SEC;
+ nsec -= NSEC_PER_SEC;
}
+ tv->tv_usec = nsec / NSEC_PER_USEC;
}
int __vsyscall(0) vgettimeofday(struct timeval * tv, struct timezone * tz)
@@ -151,11 +175,16 @@ int __vsyscall(0) vgettimeofday(struct t
* unlikely */
time_t __vsyscall(1) vtime(time_t *t)
{
+ struct timeval tv;
+ time_t result;
if (unlikely(!__vsyscall_gtod_data.sysctl_enabled))
return time_syscall(t);
- else if (t)
- *t = __vsyscall_gtod_data.wall_time_tv.tv_sec;
- return __vsyscall_gtod_data.wall_time_tv.tv_sec;
+
+ vgettimeofday(&tv, 0);
+ result = tv.tv_sec;
+ if (t)
+ *t = result;
+ return result;
}
/* Fast way to get current CPU and node.
@@ -224,10 +253,10 @@ static int vsyscall_sysctl_change(ctl_ta
return ret;
/* gcc has some trouble with __va(__pa()), so just do it this
way. */
- map1 = ioremap(__pa_symbol(&vsysc1), 2);
+ map1 = ioremap(__pa_vsymbol(&vsysc1), 2);
if (!map1)
return -ENOMEM;
- map2 = ioremap(__pa_symbol(&vsysc2), 2);
+ map2 = ioremap(__pa_vsymbol(&vsysc2), 2);
if (!map2) {
ret = -ENOMEM;
goto out;
@@ -304,7 +333,7 @@ static int __cpuinit
cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
{
long cpu = (long)arg;
- if (action == CPU_ONLINE)
+ if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN)
smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1);
return NOTIFY_DONE;
}
--- head-2010-05-25.orig/arch/x86/mm/fault_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/fault_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -15,22 +15,22 @@
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/vt_kern.h> /* For unblank_screen() */
#include <linux/compiler.h>
+#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/kprobes.h>
#include <linux/uaccess.h>
+#include <linux/kdebug.h>
#include <asm/system.h>
#include <asm/pgalloc.h>
#include <asm/smp.h>
#include <asm/tlbflush.h>
#include <asm/proto.h>
-#include <asm/kdebug.h>
#include <asm-generic/sections.h>
/* Page fault error code bits */
@@ -537,6 +537,12 @@ bad_area:
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
if (error_code & PF_USER) {
+
+ /*
+ * It's possible to have interrupts off here.
+ */
+ local_irq_enable();
+
if (is_prefetch(regs, address, error_code))
return;
@@ -646,7 +652,7 @@ do_sigbus:
}
DEFINE_SPINLOCK(pgd_lock);
-struct page *pgd_list;
+LIST_HEAD(pgd_list);
void vmalloc_sync_all(void)
{
@@ -666,8 +672,7 @@ void vmalloc_sync_all(void)
if (pgd_none(*pgd_ref))
continue;
spin_lock(&pgd_lock);
- for (page = pgd_list; page;
- page = (struct page *)page->index) {
+ list_for_each_entry(page, &pgd_list, lru) {
pgd_t *pgd;
pgd = (pgd_t *)page_address(page) + pgd_index(address);
if (pgd_none(*pgd))
--- head-2010-05-25.orig/arch/x86/mm/init_64-xen.c 2010-04-29 09:47:17.000000000 +0200
+++ head-2010-05-25/arch/x86/mm/init_64-xen.c 2010-04-29 09:47:36.000000000 +0200
@@ -25,10 +25,12 @@
#include <linux/bootmem.h>
#include <linux/proc_fs.h>
#include <linux/pci.h>
+#include <linux/pfn.h>
#include <linux/poison.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/memory_hotplug.h>
+#include <linux/nmi.h>
#include <asm/processor.h>
#include <asm/system.h>
@@ -51,7 +53,7 @@
#define Dprintk(x...)
#endif
-struct dma_mapping_ops* dma_ops;
+const struct dma_mapping_ops* dma_ops;
EXPORT_SYMBOL(dma_ops);
#if CONFIG_XEN_COMPAT <= 0x030002
@@ -191,6 +193,13 @@ void show_mem(void)
for_each_online_pgdat(pgdat) {
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
+ /* this loop can take a while with 256 GB and 4k pages
+ so update the NMI watchdog */
+ if (unlikely(i % MAX_ORDER_NR_PAGES == 0)) {
+ touch_nmi_watchdog();
+ }
+ if (!pfn_valid(pgdat->node_start_pfn + i))
+ continue;
page = pfn_to_page(pgdat->node_start_pfn + i);
total++;
if (PageReserved(page))
@@ -359,7 +368,7 @@ __set_fixmap (enum fixed_addresses idx,
}
}
-unsigned long __initdata table_start, table_end;
+unsigned long __meminitdata table_start, table_end;
static __meminit void *alloc_static_page(unsigned long *phys)
{
@@ -376,7 +385,7 @@ static __meminit void *alloc_static_page
start_pfn++;
memset((void *)va, 0, PAGE_SIZE);
return (void *)va;
-}
+}
#define PTE_SIZE PAGE_SIZE
@@ -412,28 +421,46 @@ static inline int make_readonly(unsigned
#ifndef CONFIG_XEN
/* Must run before zap_low_mappings */
-__init void *early_ioremap(unsigned long addr, unsigned long size)
+__meminit void *early_ioremap(unsigned long addr, unsigned long size)
{
- unsigned long map = round_down(addr, LARGE_PAGE_SIZE);
-
- /* actually usually some more */
- if (size >= LARGE_PAGE_SIZE) {
- return NULL;
+ unsigned long vaddr;
+ pmd_t *pmd, *last_pmd;
+ int i, pmds;
+
+ pmds = ((addr & ~PMD_MASK) + size + ~PMD_MASK) / PMD_SIZE;
+ vaddr = __START_KERNEL_map;
+ pmd = level2_kernel_pgt;
+ last_pmd = level2_kernel_pgt + PTRS_PER_PMD - 1;
+ for (; pmd <= last_pmd; pmd++, vaddr += PMD_SIZE) {
+ for (i = 0; i < pmds; i++) {
+ if (pmd_present(pmd[i]))
+ goto next;
+ }
+ vaddr += addr & ~PMD_MASK;
+ addr &= PMD_MASK;
+ for (i = 0; i < pmds; i++, addr += PMD_SIZE)
+ set_pmd(pmd + i,__pmd(addr | _KERNPG_TABLE | _PAGE_PSE));
+ __flush_tlb();
+ return (void *)vaddr;
+ next:
+ ;
}
- set_pmd(temp_mappings[0].pmd, __pmd(map | _KERNPG_TABLE | _PAGE_PSE));
- map += LARGE_PAGE_SIZE;
- set_pmd(temp_mappings[1].pmd, __pmd(map | _KERNPG_TABLE | _PAGE_PSE));
- __flush_tlb();
- return temp_mappings[0].address + (addr & (LARGE_PAGE_SIZE-1));
+ printk("early_ioremap(0x%lx, %lu) failed\n", addr, size);
+ return NULL;
}
/* To avoid virtual aliases later */
-__init void early_iounmap(void *addr, unsigned long size)
+__meminit void early_iounmap(void *addr, unsigned long size)
{
- if ((void *)round_down((unsigned long)addr, LARGE_PAGE_SIZE) != temp_mappings[0].address)
- printk("early_iounmap: bad address %p\n", addr);
- set_pmd(temp_mappings[0].pmd, __pmd(0));
- set_pmd(temp_mappings[1].pmd, __pmd(0));
+ unsigned long vaddr;
+ pmd_t *pmd;
+ int i, pmds;
+
+ vaddr = (unsigned long)addr;
+ pmds = ((vaddr & ~PMD_MASK) + size + ~PMD_MASK) / PMD_SIZE;
+ pmd = level2_kernel_pgt + pmd_index(vaddr);
+ for (i = 0; i < pmds; i++)
+ pmd_clear(pmd + i);
__flush_tlb();
}
#endif
@@ -792,14 +819,6 @@ void __meminit init_memory_mapping(unsig
__flush_tlb_all();
}
-void __cpuinit zap_low_mappings(int cpu)
-{
- /* this is not required for Xen */
-#if 0
- swap_low_mappings();
-#endif
-}
-
#ifndef CONFIG_NUMA
void __init paging_init(void)
{
@@ -984,17 +1003,6 @@ void __init mem_init(void)
reservedpages << (PAGE_SHIFT-10),
datasize >> 10,
initsize >> 10);
-
-#ifndef CONFIG_XEN
-#ifdef CONFIG_SMP
- /*
- * Sync boot_level4_pgt mappings with the init_level4_pgt
- * except for the low identity mappings which are already zapped
- * in init_level4_pgt. This sync-up is essential for AP's bringup
- */
- memcpy(boot_level4_pgt+1, init_level4_pgt+1, (PTRS_PER_PGD-1)*sizeof(pgd_t));
-#endif
-#endif
}
void free_init_pages(char *what, unsigned long begin, unsigned long end)
@@ -1004,7 +1012,7 @@ void free_init_pages(char *what, unsigne
if (begin >= end)
return;
- printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+ printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
for (addr = begin; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
@@ -1013,24 +1021,17 @@ void free_init_pages(char *what, unsigne
if (addr >= __START_KERNEL_map) {
/* make_readonly() reports all kernel addresses. */
__make_page_writable(__va(__pa(addr)));
- if (HYPERVISOR_update_va_mapping(addr, __pte(0), 0)) {
- pgd_t *pgd = pgd_offset_k(addr);
- pud_t *pud = pud_offset(pgd, addr);
- pmd_t *pmd = pmd_offset(pud, addr);
- pte_t *pte = pte_offset_kernel(pmd, addr);
-
- xen_l1_entry_update(pte, __pte(0)); /* fallback */
- }
+ change_page_attr_addr(addr, 1, __pgprot(0));
}
free_page(addr);
totalram_pages++;
}
+ if (addr > __START_KERNEL_map)
+ global_flush_tlb();
}
void free_initmem(void)
{
- memset(__initdata_begin, POISON_FREE_INITDATA,
- __initdata_end - __initdata_begin);
free_init_pages("unused kernel memory",
(unsigned long)(&__init_begin),
(unsigned long)(&__init_end));
@@ -1040,13 +1041,28 @@ void free_initmem(void)
void mark_rodata_ro(void)
{
- unsigned long addr = (unsigned long)__start_rodata;
+ unsigned long start = (unsigned long)_stext, end;
+
+#ifdef CONFIG_HOTPLUG_CPU
+ /* It must still be possible to apply SMP alternatives. */
+ if (num_possible_cpus() > 1)
+ start = (unsigned long)_etext;
+#endif
+
+#ifdef CONFIG_KPROBES
+ start = (unsigned long)__start_rodata;
+#endif
+
+ end = (unsigned long)__end_rodata;
+ start = (start + PAGE_SIZE - 1) & PAGE_MASK;
+ end &= PAGE_MASK;
+ if (end <= start)
+ return;
- for (; addr < (unsigned long)__end_rodata; addr += PAGE_SIZE)
- change_page_attr_addr(addr, 1, PAGE_KERNEL_RO);
+ change_page_attr_addr(start, (end - start) >> PAGE_SHIFT, PAGE_KERNEL_RO);
- printk ("Write protecting the kernel read-only data: %luk\n",
- (__end_rodata - __start_rodata) >> 10);
+ printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n",
+ (end - start) >> 10);
/*
* change_page_attr_addr() requires a global_flush_tlb() call after it.
@@ -1210,3 +1226,11 @@ int in_gate_area_no_task(unsigned long a
{
return (addr >= VSYSCALL_START) && (addr < VSYSCALL_END);
}
+
+#ifndef CONFIG_XEN
+void *alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size)
+{
+ return __alloc_bootmem_core(pgdat->bdata, size,
+ SMP_CACHE_BYTES, (4UL*1024*1024*1024), 0);
+}
+#endif
--- head-2010-05-25.orig/arch/x86/mm/pageattr_64-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/mm/pageattr_64-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -215,13 +215,13 @@ void mm_pin_all(void)
preempt_enable();
}
-void _arch_dup_mmap(struct mm_struct *mm)
+void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
{
if (!mm->context.pinned)
mm_pin(mm);
}
-void _arch_exit_mmap(struct mm_struct *mm)
+void arch_exit_mmap(struct mm_struct *mm)
{
struct task_struct *tsk = current;
@@ -343,10 +343,11 @@ static void flush_kernel_map(void *arg)
struct page *pg;
/* When clflush is available always use it because it is
- much cheaper than WBINVD */
- if (!cpu_has_clflush)
+ much cheaper than WBINVD. Disable clflush for now because
+ the high level code is not ready yet */
+ if (1 || !cpu_has_clflush)
asm volatile("wbinvd" ::: "memory");
- list_for_each_entry(pg, l, lru) {
+ else list_for_each_entry(pg, l, lru) {
void *adr = page_address(pg);
if (cpu_has_clflush)
cache_flush_page(adr);
@@ -460,16 +461,24 @@ __change_page_attr(unsigned long address
*/
int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
{
- int err = 0;
+ int err = 0, kernel_map = 0;
int i;
+ if (address >= __START_KERNEL_map
+ && address < __START_KERNEL_map + KERNEL_TEXT_SIZE) {
+ address = (unsigned long)__va(__pa(address));
+ kernel_map = 1;
+ }
+
down_write(&init_mm.mmap_sem);
for (i = 0; i < numpages; i++, address += PAGE_SIZE) {
unsigned long pfn = __pa(address) >> PAGE_SHIFT;
- err = __change_page_attr(address, pfn, prot, PAGE_KERNEL);
- if (err)
- break;
+ if (!kernel_map || pte_present(pfn_pte(0, prot))) {
+ err = __change_page_attr(address, pfn, prot, PAGE_KERNEL);
+ if (err)
+ break;
+ }
/* Handle kernel mapping too which aliases part of the
* lowmem */
if (__pa(address) < KERNEL_TEXT_SIZE) {
--- head-2010-05-25.orig/drivers/char/tpm/tpm_xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/char/tpm/tpm_xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -463,7 +463,7 @@ static int tpmif_connect(struct xenbus_d
tp->backend_id = domid;
err = bind_listening_port_to_irqhandler(
- domid, tpmif_int, SA_SAMPLE_RANDOM, "tpmif", tp);
+ domid, tpmif_int, IRQF_SAMPLE_RANDOM, "tpmif", tp);
if (err <= 0) {
WPRINTK("bind_listening_port_to_irqhandler failed "
"(err=%d)\n", err);
--- head-2010-05-25.orig/drivers/pci/msi-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/pci/msi-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -12,16 +12,15 @@
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/ioport.h>
-#include <linux/smp_lock.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/msi.h>
+#include <linux/smp.h>
#include <xen/evtchn.h>
#include <asm/errno.h>
#include <asm/io.h>
-#include <asm/smp.h>
#include "pci.h"
#include "msi.h"
@@ -156,6 +155,7 @@ int register_msi_get_owner(int (*func)(s
get_owner = func;
return 0;
}
+EXPORT_SYMBOL(register_msi_get_owner);
int unregister_msi_get_owner(int (*func)(struct pci_dev *dev))
{
@@ -164,6 +164,7 @@ int unregister_msi_get_owner(int (*func)
get_owner = NULL;
return 0;
}
+EXPORT_SYMBOL(unregister_msi_get_owner);
static int msi_get_dev_owner(struct pci_dev *dev)
{
@@ -259,11 +260,6 @@ static int msi_map_vector(struct pci_dev
map_irq.pirq : evtchn_map_pirq(-1, map_irq.pirq));
}
-static int msi_init(void)
-{
- return 0;
-}
-
#ifdef CONFIG_PM
void pci_restore_msi_state(struct pci_dev *dev)
{
@@ -392,21 +388,32 @@ static int msix_capability_init(struct p
}
/**
- * pci_msi_supported - check whether MSI may be enabled on device
+ * pci_msi_check_device - check whether MSI may be enabled on a device
* @dev: pointer to the pci_dev data structure of MSI device function
+ * @nvec: how many MSIs have been requested ?
+ * @type: are we checking for MSI or MSI-X ?
*
* Look at global flags, the device itself, and its parent busses
- * to return 0 if MSI are supported for the device.
+ * to determine if MSI/-X are supported for the device. If MSI/-X is
+ * supported return 0, else return an error code.
**/
-static
-int pci_msi_supported(struct pci_dev * dev)
+static int pci_msi_check_device(struct pci_dev* dev, int nvec, int type)
{
struct pci_bus *bus;
+ int ret;
/* MSI must be globally enabled and supported by the device */
if (!pci_msi_enable || !dev || dev->no_msi)
return -EINVAL;
+ /*
+ * You can't ask to have 0 or less MSIs configured.
+ * a) it's stupid ..
+ * b) the list manipulation code assumes nvec >= 1.
+ */
+ if (nvec < 1)
+ return -ERANGE;
+
/* Any bridge which does NOT route MSI transactions from it's
* secondary bus to it's primary bus must set NO_MSI flag on
* the secondary pci_bus.
@@ -417,6 +424,13 @@ int pci_msi_supported(struct pci_dev * d
if (bus->bus_flags & PCI_BUS_FLAGS_NO_MSI)
return -EINVAL;
+ ret = arch_msi_check_device(dev, nvec, type);
+ if (ret)
+ return ret;
+
+ if (!pci_find_capability(dev, type))
+ return -EINVAL;
+
return 0;
}
@@ -433,15 +447,12 @@ int pci_msi_supported(struct pci_dev * d
extern int pci_frontend_enable_msi(struct pci_dev *dev);
int pci_enable_msi(struct pci_dev* dev)
{
- int pos, temp, status;
+ int temp, status;
struct msi_dev_list *msi_dev_entry = get_msi_dev_pirq_list(dev);
- if (pci_msi_supported(dev) < 0)
- return -EINVAL;
-
- status = msi_init();
- if (status < 0)
- return status;
+ status = pci_msi_check_device(dev, 1, PCI_CAP_ID_MSI);
+ if (status)
+ return status;
#ifdef CONFIG_XEN_PCIDEV_FRONTEND
if (!is_initial_xendomain())
@@ -463,10 +474,6 @@ int pci_enable_msi(struct pci_dev* dev)
temp = dev->irq;
- pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
- if (!pos)
- return -EINVAL;
-
/* Check whether driver already requested for MSI-X irqs */
if (dev->msix_enabled) {
printk(KERN_INFO "PCI: %s: Can't enable MSI. "
@@ -481,6 +488,7 @@ int pci_enable_msi(struct pci_dev* dev)
return status;
}
+EXPORT_SYMBOL(pci_enable_msi);
extern void pci_frontend_disable_msi(struct pci_dev* dev);
void pci_disable_msi(struct pci_dev* dev)
@@ -488,12 +496,7 @@ void pci_disable_msi(struct pci_dev* dev
int pirq;
struct msi_dev_list *msi_dev_entry = get_msi_dev_pirq_list(dev);
- if (!pci_msi_enable)
- return;
- if (!dev)
- return;
-
- if (!dev->msi_enabled)
+ if (!pci_msi_enable || !dev || !dev->msi_enabled)
return;
#ifdef CONFIG_XEN_PCIDEV_FRONTEND
@@ -516,6 +519,7 @@ void pci_disable_msi(struct pci_dev* dev
pci_intx(dev, 1); /* enable intx */
dev->msi_enabled = 0;
}
+EXPORT_SYMBOL(pci_disable_msi);
/**
* pci_enable_msix - configure device's MSI-X capability structure
@@ -541,7 +545,7 @@ int pci_enable_msix(struct pci_dev* dev,
u16 control;
struct msi_dev_list *msi_dev_entry = get_msi_dev_pirq_list(dev);
- if (!entries || pci_msi_supported(dev) < 0)
+ if (!entries)
return -EINVAL;
#ifdef CONFIG_XEN_PCIDEV_FRONTEND
@@ -580,14 +584,11 @@ int pci_enable_msix(struct pci_dev* dev,
}
#endif
- status = msi_init();
- if (status < 0)
+ status = pci_msi_check_device(dev, nvec, PCI_CAP_ID_MSIX);
+ if (status)
return status;
pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
- if (!pos)
- return -EINVAL;
-
pci_read_config_word(dev, msi_control_reg(pos), &control);
nr_entries = multi_msix_capable(control);
if (nvec > nr_entries)
@@ -619,16 +620,12 @@ int pci_enable_msix(struct pci_dev* dev,
return status;
}
+EXPORT_SYMBOL(pci_enable_msix);
extern void pci_frontend_disable_msix(struct pci_dev* dev);
void pci_disable_msix(struct pci_dev* dev)
{
- if (!pci_msi_enable)
- return;
- if (!dev)
- return;
-
- if (!dev->msix_enabled)
+ if (!pci_msi_enable || !dev || !dev->msix_enabled)
return;
#ifdef CONFIG_XEN_PCIDEV_FRONTEND
@@ -659,6 +656,7 @@ void pci_disable_msix(struct pci_dev* de
pci_intx(dev, 1); /* enable intx */
dev->msix_enabled = 0;
}
+EXPORT_SYMBOL(pci_disable_msix);
/**
* msi_remove_pci_irq_vectors - reclaim MSI(X) irqs to unused state
@@ -697,12 +695,57 @@ void pci_no_msi(void)
pci_msi_enable = 0;
}
-EXPORT_SYMBOL(pci_enable_msi);
-EXPORT_SYMBOL(pci_disable_msi);
-EXPORT_SYMBOL(pci_enable_msix);
-EXPORT_SYMBOL(pci_disable_msix);
-#ifdef CONFIG_XEN
-EXPORT_SYMBOL(register_msi_get_owner);
-EXPORT_SYMBOL(unregister_msi_get_owner);
+void pci_msi_init_pci_dev(struct pci_dev *dev)
+{
+#ifndef CONFIG_XEN
+ INIT_LIST_HEAD(&dev->msi_list);
#endif
+}
+
+
+/* Arch hooks */
+
+int __attribute__ ((weak))
+arch_msi_check_device(struct pci_dev* dev, int nvec, int type)
+{
+ return 0;
+}
+
+#ifndef CONFIG_XEN
+int __attribute__ ((weak))
+arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry)
+{
+ return 0;
+}
+
+int __attribute__ ((weak))
+arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
+{
+ struct msi_desc *entry;
+ int ret;
+
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ ret = arch_setup_msi_irq(dev, entry);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq)
+{
+ return;
+}
+
+void __attribute__ ((weak))
+arch_teardown_msi_irqs(struct pci_dev *dev)
+{
+ struct msi_desc *entry;
+
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ if (entry->irq != 0)
+ arch_teardown_msi_irq(entry->irq);
+ }
+}
+#endif
--- head-2010-05-25.orig/drivers/xen/blkfront/blkfront.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/xen/blkfront/blkfront.c 2010-03-24 15:09:15.000000000 +0100
@@ -244,7 +244,7 @@ static int setup_blkring(struct xenbus_d
info->ring_ref = err;
err = bind_listening_port_to_irqhandler(
- dev->otherend_id, blkif_int, SA_SAMPLE_RANDOM, "blkif", info);
+ dev->otherend_id, blkif_int, IRQF_SAMPLE_RANDOM, "blkif", info);
if (err <= 0) {
xenbus_dev_fatal(dev, err,
"bind_listening_port_to_irqhandler");
--- head-2010-05-25.orig/drivers/xen/char/mem.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/drivers/xen/char/mem.c 2010-03-24 15:09:15.000000000 +0100
@@ -18,7 +18,6 @@
#include <linux/raw.h>
#include <linux/tty.h>
#include <linux/capability.h>
-#include <linux/smp_lock.h>
#include <linux/ptrace.h>
#include <linux/device.h>
#include <asm/pgalloc.h>
--- head-2010-05-25.orig/drivers/xen/core/hypervisor_sysfs.c 2007-07-10 09:42:30.000000000 +0200
+++ head-2010-05-25/drivers/xen/core/hypervisor_sysfs.c 2010-03-24 15:09:15.000000000 +0100
@@ -50,7 +50,7 @@ static int __init hypervisor_subsys_init
if (!is_running_on_xen())
return -ENODEV;
- hypervisor_subsys.kset.kobj.ktype = &hyp_sysfs_kobj_type;
+ hypervisor_subsys.kobj.ktype = &hyp_sysfs_kobj_type;
return 0;
}
--- head-2010-05-25.orig/drivers/xen/core/machine_reboot.c 2008-09-01 12:07:31.000000000 +0200
+++ head-2010-05-25/drivers/xen/core/machine_reboot.c 2010-03-24 15:09:15.000000000 +0100
@@ -85,6 +85,8 @@ static void post_suspend(int suspend_can
#ifdef CONFIG_SMP
cpu_initialized_map = cpu_online_map;
#endif
+ for_each_possible_cpu(i)
+ setup_runstate_area(i);
}
shinfo_mfn = xen_start_info->shared_info >> PAGE_SHIFT;
--- head-2010-05-25.orig/drivers/xen/core/smpboot.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/xen/core/smpboot.c 2010-03-24 15:09:15.000000000 +0100
@@ -160,13 +160,12 @@ static void xen_smp_intr_exit(unsigned i
void __cpuinit cpu_bringup(void)
{
+ cpu_init();
#ifdef __i386__
- cpu_set_gdt(current_thread_info()->cpu);
- secondary_cpu_init();
+ identify_secondary_cpu(cpu_data + smp_processor_id());
#else
- cpu_init();
-#endif
identify_cpu(cpu_data + smp_processor_id());
+#endif
touch_softlockup_watchdog();
preempt_disable();
local_irq_enable();
@@ -186,11 +185,6 @@ static void __cpuinit cpu_initialize_con
static DEFINE_SPINLOCK(ctxt_lock);
struct task_struct *idle = idle_task(cpu);
-#ifdef __x86_64__
- struct desc_ptr *gdt_descr = &cpu_gdt_descr[cpu];
-#else
- struct Xgt_desc_struct *gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
-#endif
if (cpu_test_and_set(cpu, cpu_initialized_map))
return;
@@ -213,11 +207,11 @@ static void __cpuinit cpu_initialize_con
smp_trap_init(ctxt.trap_ctxt);
ctxt.ldt_ents = 0;
-
- ctxt.gdt_frames[0] = virt_to_mfn(gdt_descr->address);
- ctxt.gdt_ents = gdt_descr->size / 8;
+ ctxt.gdt_ents = GDT_SIZE / 8;
#ifdef __i386__
+ ctxt.gdt_frames[0] = virt_to_mfn(get_cpu_gdt_table(cpu));
+
ctxt.user_regs.cs = __KERNEL_CS;
ctxt.user_regs.esp = idle->thread.esp0 - sizeof(struct pt_regs);
@@ -230,7 +224,11 @@ static void __cpuinit cpu_initialize_con
ctxt.failsafe_callback_eip = (unsigned long)failsafe_callback;
ctxt.ctrlreg[3] = xen_pfn_to_cr3(virt_to_mfn(swapper_pg_dir));
+
+ ctxt.user_regs.fs = __KERNEL_PERCPU;
#else /* __x86_64__ */
+ ctxt.gdt_frames[0] = virt_to_mfn(cpu_gdt_descr[cpu].address);
+
ctxt.user_regs.cs = __KERNEL_CS;
ctxt.user_regs.esp = idle->thread.rsp0 - sizeof(struct pt_regs);
@@ -260,9 +258,8 @@ void __init smp_prepare_cpus(unsigned in
struct vcpu_get_physid cpu_id;
#ifdef __x86_64__
struct desc_ptr *gdt_descr;
-#else
- struct Xgt_desc_struct *gdt_descr;
#endif
+ void *gdt_addr;
apicid = 0;
if (HYPERVISOR_vcpu_op(VCPUOP_get_physid, 0, &cpu_id) == 0)
@@ -312,14 +309,12 @@ void __init smp_prepare_cpus(unsigned in
}
gdt_descr->size = GDT_SIZE;
memcpy((void *)gdt_descr->address, cpu_gdt_table, GDT_SIZE);
+ gdt_addr = (void *)gdt_descr->address;
#else
- if (unlikely(!init_gdt(cpu, idle)))
- continue;
- gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
+ init_gdt(cpu);
+ gdt_addr = get_cpu_gdt_table(cpu);
#endif
- make_page_readonly(
- (void *)gdt_descr->address,
- XENFEAT_writable_descriptor_tables);
+ make_page_readonly(gdt_addr, XENFEAT_writable_descriptor_tables);
apicid = cpu;
if (HYPERVISOR_vcpu_op(VCPUOP_get_physid, cpu, &cpu_id) == 0)
@@ -334,6 +329,8 @@ void __init smp_prepare_cpus(unsigned in
cpu_pda(cpu)->pcurrent = idle;
cpu_pda(cpu)->cpunumber = cpu;
clear_tsk_thread_flag(idle, TIF_FORK);
+#else
+ per_cpu(current_task, cpu) = idle;
#endif
irq_ctx_init(cpu);
@@ -358,8 +355,12 @@ void __init smp_prepare_cpus(unsigned in
#endif
}
-void __devinit smp_prepare_boot_cpu(void)
+void __init smp_prepare_boot_cpu(void)
{
+#ifdef __i386__
+ init_gdt(smp_processor_id());
+ switch_to_new_gdt();
+#endif
prefill_possible_map();
}
--- head-2010-05-25.orig/drivers/xen/core/xen_sysfs.c 2009-05-29 10:25:53.000000000 +0200
+++ head-2010-05-25/drivers/xen/core/xen_sysfs.c 2010-03-24 15:09:15.000000000 +0100
@@ -30,12 +30,12 @@ HYPERVISOR_ATTR_RO(type);
static int __init xen_sysfs_type_init(void)
{
- return sysfs_create_file(&hypervisor_subsys.kset.kobj, &type_attr.attr);
+ return sysfs_create_file(&hypervisor_subsys.kobj, &type_attr.attr);
}
static void xen_sysfs_type_destroy(void)
{
- sysfs_remove_file(&hypervisor_subsys.kset.kobj, &type_attr.attr);
+ sysfs_remove_file(&hypervisor_subsys.kobj, &type_attr.attr);
}
/* xen version attributes */
@@ -91,13 +91,13 @@ static struct attribute_group version_gr
static int __init xen_sysfs_version_init(void)
{
- return sysfs_create_group(&hypervisor_subsys.kset.kobj,
+ return sysfs_create_group(&hypervisor_subsys.kobj,
&version_group);
}
static void xen_sysfs_version_destroy(void)
{
- sysfs_remove_group(&hypervisor_subsys.kset.kobj, &version_group);
+ sysfs_remove_group(&hypervisor_subsys.kobj, &version_group);
}
/* UUID */
@@ -126,12 +126,12 @@ HYPERVISOR_ATTR_RO(uuid);
static int __init xen_sysfs_uuid_init(void)
{
- return sysfs_create_file(&hypervisor_subsys.kset.kobj, &uuid_attr.attr);
+ return sysfs_create_file(&hypervisor_subsys.kobj, &uuid_attr.attr);
}
static void xen_sysfs_uuid_destroy(void)
{
- sysfs_remove_file(&hypervisor_subsys.kset.kobj, &uuid_attr.attr);
+ sysfs_remove_file(&hypervisor_subsys.kobj, &uuid_attr.attr);
}
/* xen compilation attributes */
@@ -204,13 +204,13 @@ static struct attribute_group xen_compil
int __init static xen_compilation_init(void)
{
- return sysfs_create_group(&hypervisor_subsys.kset.kobj,
+ return sysfs_create_group(&hypervisor_subsys.kobj,
&xen_compilation_group);
}
static void xen_compilation_destroy(void)
{
- sysfs_remove_group(&hypervisor_subsys.kset.kobj,
+ sysfs_remove_group(&hypervisor_subsys.kobj,
&xen_compilation_group);
}
@@ -325,13 +325,13 @@ static struct attribute_group xen_proper
static int __init xen_properties_init(void)
{
- return sysfs_create_group(&hypervisor_subsys.kset.kobj,
+ return sysfs_create_group(&hypervisor_subsys.kobj,
&xen_properties_group);
}
static void xen_properties_destroy(void)
{
- sysfs_remove_group(&hypervisor_subsys.kset.kobj,
+ sysfs_remove_group(&hypervisor_subsys.kobj,
&xen_properties_group);
}
@@ -350,13 +350,13 @@ HYPERVISOR_ATTR_RO(vmcoreinfo);
static int __init xen_sysfs_vmcoreinfo_init(void)
{
- return sysfs_create_file(&hypervisor_subsys.kset.kobj,
+ return sysfs_create_file(&hypervisor_subsys.kobj,
&vmcoreinfo_attr.attr);
}
static void xen_sysfs_vmcoreinfo_destroy(void)
{
- sysfs_remove_file(&hypervisor_subsys.kset.kobj, &vmcoreinfo_attr.attr);
+ sysfs_remove_file(&hypervisor_subsys.kobj, &vmcoreinfo_attr.attr);
}
#endif
--- head-2010-05-25.orig/drivers/xen/netback/netback.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/drivers/xen/netback/netback.c 2010-03-24 15:09:15.000000000 +0100
@@ -198,7 +198,7 @@ static struct sk_buff *netbk_copy_skb(st
goto err;
skb_reserve(nskb, 16 + NET_IP_ALIGN);
- headlen = nskb->end - nskb->data;
+ headlen = skb_end_pointer(nskb) - nskb->data;
if (headlen > skb_headlen(skb))
headlen = skb_headlen(skb);
ret = skb_copy_bits(skb, 0, __skb_put(nskb, headlen), headlen);
@@ -244,11 +244,15 @@ static struct sk_buff *netbk_copy_skb(st
len -= copy;
}
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+ offset = 0;
+#else
offset = nskb->data - skb->data;
+#endif
- nskb->h.raw = skb->h.raw + offset;
- nskb->nh.raw = skb->nh.raw + offset;
- nskb->mac.raw = skb->mac.raw + offset;
+ nskb->transport_header = skb->transport_header + offset;
+ nskb->network_header = skb->network_header + offset;
+ nskb->mac_header = skb->mac_header + offset;
return nskb;
@@ -1678,7 +1682,7 @@ static int __init netback_init(void)
(void)bind_virq_to_irqhandler(VIRQ_DEBUG,
0,
netif_be_dbg,
- SA_SHIRQ,
+ IRQF_SHARED,
"net-be-dbg",
&netif_be_dbg);
#endif
--- head-2010-05-25.orig/drivers/xen/netfront/netfront.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/xen/netfront/netfront.c 2010-03-24 15:09:15.000000000 +0100
@@ -513,7 +513,7 @@ static int setup_device(struct xenbus_de
memcpy(netdev->dev_addr, info->mac, ETH_ALEN);
err = bind_listening_port_to_irqhandler(
- dev->otherend_id, netif_int, SA_SAMPLE_RANDOM, netdev->name,
+ dev->otherend_id, netif_int, IRQF_SAMPLE_RANDOM, netdev->name,
netdev);
if (err < 0)
goto fail;
--- head-2010-05-25.orig/drivers/xen/pciback/xenbus.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/xen/pciback/xenbus.c 2010-03-24 15:09:15.000000000 +0100
@@ -100,7 +100,7 @@ static int pciback_do_attach(struct pcib
err = bind_interdomain_evtchn_to_irqhandler(
pdev->xdev->otherend_id, remote_evtchn, pciback_handle_event,
- SA_SAMPLE_RANDOM, "pciback", pdev);
+ IRQF_SAMPLE_RANDOM, "pciback", pdev);
if (err < 0) {
xenbus_dev_fatal(pdev->xdev, err,
"Error binding event channel to IRQ");
--- head-2010-05-25.orig/drivers/xen/pcifront/xenbus.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/xen/pcifront/xenbus.c 2010-03-24 15:09:15.000000000 +0100
@@ -11,10 +11,6 @@
#include <xen/gnttab.h>
#include "pcifront.h"
-#ifndef __init_refok
-#define __init_refok
-#endif
-
#define INVALID_GRANT_REF (0)
#define INVALID_EVTCHN (-1)
@@ -95,7 +91,7 @@ static int pcifront_publish_info(struct
goto out;
bind_caller_port_to_irqhandler(pdev->evtchn, pcifront_handler_aer,
- SA_SAMPLE_RANDOM, "pcifront", pdev);
+ IRQF_SAMPLE_RANDOM, "pcifront", pdev);
do_publish:
err = xenbus_transaction_start(&trans);
--- head-2010-05-25.orig/drivers/xen/scsifront/xenbus.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/drivers/xen/scsifront/xenbus.c 2010-03-24 15:09:15.000000000 +0100
@@ -96,7 +96,7 @@ static int scsifront_alloc_ring(struct v
err = bind_listening_port_to_irqhandler(
dev->otherend_id, scsifront_intr,
- SA_SAMPLE_RANDOM, "scsifront", info);
+ IRQF_SAMPLE_RANDOM, "scsifront", info);
if (err <= 0) {
xenbus_dev_fatal(dev, err, "bind_listening_port_to_irqhandler");
--- head-2010-05-25.orig/drivers/xen/sfc_netback/accel_fwd.c 2008-04-02 12:34:02.000000000 +0200
+++ head-2010-05-25/drivers/xen/sfc_netback/accel_fwd.c 2010-03-24 15:09:15.000000000 +0100
@@ -308,7 +308,7 @@ static struct netback_accel *for_a_vnic(
static inline int packet_is_arp_reply(struct sk_buff *skb)
{
return skb->protocol == ntohs(ETH_P_ARP)
- && skb->nh.arph->ar_op == ntohs(ARPOP_REPLY);
+ && arp_hdr(skb)->ar_op == ntohs(ARPOP_REPLY);
}
@@ -392,12 +392,13 @@ void netback_accel_tx_packet(struct sk_b
BUG_ON(fwd_priv == NULL);
- if (is_broadcast_ether_addr(skb->mac.raw) && packet_is_arp_reply(skb)) {
+ if (is_broadcast_ether_addr(skb_mac_header(skb))
+ && packet_is_arp_reply(skb)) {
/*
* update our fast path forwarding to reflect this
* gratuitous ARP
*/
- mac = skb->mac.raw+ETH_ALEN;
+ mac = skb_mac_header(skb)+ETH_ALEN;
DPRINTK("%s: found gratuitous ARP for " MAC_FMT "\n",
__FUNCTION__, MAC_ARG(mac));
--- head-2010-05-25.orig/drivers/xen/sfc_netback/accel_solarflare.c 2010-01-18 15:23:12.000000000 +0100
+++ head-2010-05-25/drivers/xen/sfc_netback/accel_solarflare.c 2010-03-24 15:09:15.000000000 +0100
@@ -113,7 +113,7 @@ bend_dl_tx_packet(struct efx_dl_device *
BUG_ON(port == NULL);
NETBACK_ACCEL_STATS_OP(global_stats.dl_tx_packets++);
- if (skb->mac.raw != NULL)
+ if (skb_mac_header_was_set(skb))
netback_accel_tx_packet(skb, port->fwd_priv);
else {
DPRINTK("Ignoring packet with missing mac address\n");
--- head-2010-05-25.orig/drivers/xen/sfc_netfront/accel_tso.c 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/drivers/xen/sfc_netfront/accel_tso.c 2010-03-24 15:09:15.000000000 +0100
@@ -33,10 +33,9 @@
#include "accel_tso.h"
-#define PTR_DIFF(p1, p2) ((u8*)(p1) - (u8*)(p2))
-#define ETH_HDR_LEN(skb) ((skb)->nh.raw - (skb)->data)
-#define SKB_TCP_OFF(skb) PTR_DIFF ((skb)->h.th, (skb)->data)
-#define SKB_IP_OFF(skb) PTR_DIFF ((skb)->nh.iph, (skb)->data)
+#define ETH_HDR_LEN(skb) skb_network_offset(skb)
+#define SKB_TCP_OFF(skb) skb_transport_offset(skb)
+#define SKB_IP_OFF(skb) skb_network_offset(skb)
/*
* Set a maximum number of buffers in each output packet to make life
@@ -114,9 +113,8 @@ struct netfront_accel_tso_state {
static inline void tso_check_safe(struct sk_buff *skb) {
EPRINTK_ON(skb->protocol != htons (ETH_P_IP));
EPRINTK_ON(((struct ethhdr*) skb->data)->h_proto != htons (ETH_P_IP));
- EPRINTK_ON(skb->nh.iph->protocol != IPPROTO_TCP);
- EPRINTK_ON((SKB_TCP_OFF(skb)
- + (skb->h.th->doff << 2u)) > skb_headlen(skb));
+ EPRINTK_ON(ip_hdr(skb)->protocol != IPPROTO_TCP);
+ EPRINTK_ON((SKB_TCP_OFF(skb) + tcp_hdrlen(skb)) > skb_headlen(skb));
}
@@ -129,17 +127,17 @@ static inline void tso_start(struct netf
* All ethernet/IP/TCP headers combined size is TCP header size
* plus offset of TCP header relative to start of packet.
*/
- st->p.header_length = (skb->h.th->doff << 2u) + SKB_TCP_OFF(skb);
+ st->p.header_length = tcp_hdrlen(skb) + SKB_TCP_OFF(skb);
st->p.full_packet_size = (st->p.header_length
+ skb_shinfo(skb)->gso_size);
st->p.gso_size = skb_shinfo(skb)->gso_size;
- st->p.ip_id = htons(skb->nh.iph->id);
- st->seqnum = ntohl(skb->h.th->seq);
+ st->p.ip_id = htons(ip_hdr(skb)->id);
+ st->seqnum = ntohl(tcp_hdr(skb)->seq);
- EPRINTK_ON(skb->h.th->urg);
- EPRINTK_ON(skb->h.th->syn);
- EPRINTK_ON(skb->h.th->rst);
+ EPRINTK_ON(tcp_hdr(skb)->urg);
+ EPRINTK_ON(tcp_hdr(skb)->syn);
+ EPRINTK_ON(tcp_hdr(skb)->rst);
st->remaining_len = skb->len - st->p.header_length;
@@ -258,8 +256,8 @@ int tso_start_new_packet(netfront_accel_
/* This packet will be the last in the TSO burst. */
ip_length = (st->p.header_length - ETH_HDR_LEN(skb)
+ st->remaining_len);
- tsoh_th->fin = skb->h.th->fin;
- tsoh_th->psh = skb->h.th->psh;
+ tsoh_th->fin = tcp_hdr(skb)->fin;
+ tsoh_th->psh = tcp_hdr(skb)->psh;
}
tsoh_iph->tot_len = htons(ip_length);
--- head-2010-05-25.orig/drivers/xen/sfc_netfront/accel_vi.c 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/drivers/xen/sfc_netfront/accel_vi.c 2010-03-24 15:09:15.000000000 +0100
@@ -465,7 +465,7 @@ netfront_accel_enqueue_skb_multi(netfron
if (skb->ip_summed == CHECKSUM_PARTIAL) {
/* Set to zero to encourage falcon to work it out for us */
- *(u16*)(skb->h.raw + skb->csum_offset) = 0;
+ *(u16*)(skb->head + skb->csum_start + skb->csum_offset) = 0;
}
if (multi_post_start_new_buffer(vnic, &state)) {
@@ -584,7 +584,7 @@ netfront_accel_enqueue_skb_single(netfro
if (skb->ip_summed == CHECKSUM_PARTIAL) {
/* Set to zero to encourage falcon to work it out for us */
- *(u16*)(skb->h.raw + skb->csum_offset) = 0;
+ *(u16*)(skb->head + skb->csum_start + skb->csum_offset) = 0;
}
NETFRONT_ACCEL_PKTBUFF_FOR_EACH_FRAGMENT
(skb, idx, frag_data, frag_len, {
--- head-2010-05-25.orig/drivers/xen/sfc_netfront/accel_xenbus.c 2008-02-20 09:32:49.000000000 +0100
+++ head-2010-05-25/drivers/xen/sfc_netfront/accel_xenbus.c 2010-03-24 15:09:15.000000000 +0100
@@ -356,7 +356,7 @@ static int vnic_setup_domU_shared_state(
/* Create xenbus msg event channel */
err = bind_listening_port_to_irqhandler
(dev->otherend_id, netfront_accel_msg_channel_irq_from_bend,
- SA_SAMPLE_RANDOM, "vnicctrl", vnic);
+ IRQF_SAMPLE_RANDOM, "vnicctrl", vnic);
if (err < 0) {
EPRINTK("Couldn't bind msg event channel\n");
goto fail_msg_irq;
@@ -367,7 +367,7 @@ static int vnic_setup_domU_shared_state(
/* Create xenbus net event channel */
err = bind_listening_port_to_irqhandler
(dev->otherend_id, netfront_accel_net_channel_irq_from_bend,
- SA_SAMPLE_RANDOM, "vnicfront", vnic);
+ IRQF_SAMPLE_RANDOM, "vnicfront", vnic);
if (err < 0) {
EPRINTK("Couldn't bind net event channel\n");
goto fail_net_irq;
--- head-2010-05-25.orig/drivers/xen/usbfront/xenbus.c 2010-04-15 09:53:24.000000000 +0200
+++ head-2010-05-25/drivers/xen/usbfront/xenbus.c 2010-03-24 15:09:15.000000000 +0100
@@ -111,7 +111,7 @@ static int setup_rings(struct xenbus_dev
info->conn_ring_ref = err;
err = bind_listening_port_to_irqhandler(
- dev->otherend_id, xenhcd_int, SA_SAMPLE_RANDOM, "usbif", info);
+ dev->otherend_id, xenhcd_int, IRQF_SAMPLE_RANDOM, "usbif", info);
if (err <= 0) {
xenbus_dev_fatal(dev, err,
"bind_listening_port_to_irqhandler");
--- head-2010-05-25.orig/fs/aio.c 2010-03-24 14:53:41.000000000 +0100
+++ head-2010-05-25/fs/aio.c 2010-03-24 15:09:15.000000000 +0100
@@ -42,7 +42,7 @@
#ifdef CONFIG_EPOLL
#include <linux/poll.h>
-#include <linux/eventpoll.h>
+#include <linux/anon_inodes.h>
#endif
#if DEBUG > 1
@@ -1292,7 +1292,7 @@ static const struct file_operations aioq
/* make_aio_fd:
* Create a file descriptor that can be used to poll the event queue.
- * Based and piggybacked on the excellent epoll code.
+ * Based on the excellent epoll code.
*/
static int make_aio_fd(struct kioctx *ioctx)
@@ -1301,7 +1301,8 @@ static int make_aio_fd(struct kioctx *io
struct inode *inode;
struct file *file;
- error = ep_getfd(&fd, &inode, &file, NULL, &aioq_fops);
+ error = anon_inode_getfd(&fd, &inode, &file, "[aioq]",
+ &aioq_fops, ioctx);
if (error)
return error;
--- head-2010-05-25.orig/arch/x86/include/asm/boot.h 2010-05-25 09:12:09.000000000 +0200
+++ head-2010-05-25/arch/x86/include/asm/boot.h 2010-03-24 15:09:15.000000000 +0100
@@ -16,7 +16,7 @@
& ~(CONFIG_PHYSICAL_ALIGN - 1))
/* Minimum kernel alignment, as a power of two */
-#ifdef CONFIG_X86_64
+#if defined(CONFIG_X86_64) && !defined(CONFIG_XEN)
#define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT
#else
#define MIN_KERNEL_ALIGN_LG2 (PAGE_SHIFT + THREAD_ORDER)
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/desc_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/desc_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -11,23 +11,24 @@
#include <asm/mmu.h>
-extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-
struct Xgt_desc_struct {
unsigned short size;
unsigned long address __attribute__((packed));
unsigned short pad;
} __attribute__ ((packed));
-extern struct Xgt_desc_struct idt_descr;
-DECLARE_PER_CPU(struct Xgt_desc_struct, cpu_gdt_descr);
-extern struct Xgt_desc_struct early_gdt_descr;
+struct gdt_page
+{
+ struct desc_struct gdt[GDT_ENTRIES];
+} __attribute__((aligned(PAGE_SIZE)));
+DECLARE_PER_CPU(struct gdt_page, gdt_page);
static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
{
- return (struct desc_struct *)per_cpu(cpu_gdt_descr, cpu).address;
+ return per_cpu(gdt_page, cpu).gdt;
}
+extern struct Xgt_desc_struct idt_descr;
extern struct desc_struct idt_table[];
extern void set_intr_gate(unsigned int irq, void * addr);
@@ -55,53 +56,32 @@ static inline void pack_gate(__u32 *a, _
#define DESCTYPE_S 0x10 /* !system */
#ifndef CONFIG_XEN
-#define load_TR_desc() __asm__ __volatile__("ltr %w0"::"q" (GDT_ENTRY_TSS*8))
-
-#define load_gdt(dtr) __asm__ __volatile("lgdt %0"::"m" (*dtr))
-#define load_idt(dtr) __asm__ __volatile("lidt %0"::"m" (*dtr))
+#define load_TR_desc() native_load_tr_desc()
+#define load_gdt(dtr) native_load_gdt(dtr)
+#define load_idt(dtr) native_load_idt(dtr)
#define load_tr(tr) __asm__ __volatile("ltr %0"::"m" (tr))
#define load_ldt(ldt) __asm__ __volatile("lldt %0"::"m" (ldt))
-#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr))
-#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr))
-#define store_tr(tr) __asm__ ("str %0":"=m" (tr))
+#define store_gdt(dtr) native_store_gdt(dtr)
+#define store_idt(dtr) native_store_idt(dtr)
+#define store_tr(tr) (tr = native_store_tr())
#define store_ldt(ldt) __asm__ ("sldt %0":"=m" (ldt))
-#endif
-#if TLS_SIZE != 24
-# error update this code.
-#endif
-
-static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
-{
-#define C(i) if (HYPERVISOR_update_descriptor(virt_to_machine(&get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN + i]), \
- *(u64 *)&t->tls_array[i]) \
- BUG()
- C(0); C(1); C(2);
-#undef C
-}
+#define load_TLS(t, cpu) native_load_tls(t, cpu)
+#define set_ldt native_set_ldt
-#ifndef CONFIG_XEN
#define write_ldt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
#define write_gdt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
#define write_idt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-static inline void write_dt_entry(void *dt, int entry, __u32 entry_a, __u32 entry_b)
+static inline void write_dt_entry(struct desc_struct *dt,
+ int entry, u32 entry_low, u32 entry_high)
{
- __u32 *lp = (__u32 *)((char *)dt + entry*8);
- *lp = entry_a;
- *(lp+1) = entry_b;
+ dt[entry].a = entry_low;
+ dt[entry].b = entry_high;
}
-#define set_ldt native_set_ldt
-#else
-extern int write_ldt_entry(void *ldt, int entry, __u32 entry_a, __u32 entry_b);
-extern int write_gdt_entry(void *gdt, int entry, __u32 entry_a, __u32 entry_b);
-#define set_ldt xen_set_ldt
-#endif
-#ifndef CONFIG_XEN
-static inline fastcall void native_set_ldt(const void *addr,
- unsigned int entries)
+static inline void native_set_ldt(const void *addr, unsigned int entries)
{
if (likely(entries == 0))
__asm__ __volatile__("lldt %w0"::"q" (0));
@@ -116,6 +96,65 @@ static inline fastcall void native_set_l
__asm__ __volatile__("lldt %w0"::"q" (GDT_ENTRY_LDT*8));
}
}
+
+
+static inline void native_load_tr_desc(void)
+{
+ asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8));
+}
+
+static inline void native_load_gdt(const struct Xgt_desc_struct *dtr)
+{
+ asm volatile("lgdt %0"::"m" (*dtr));
+}
+
+static inline void native_load_idt(const struct Xgt_desc_struct *dtr)
+{
+ asm volatile("lidt %0"::"m" (*dtr));
+}
+
+static inline void native_store_gdt(struct Xgt_desc_struct *dtr)
+{
+ asm ("sgdt %0":"=m" (*dtr));
+}
+
+static inline void native_store_idt(struct Xgt_desc_struct *dtr)
+{
+ asm ("sidt %0":"=m" (*dtr));
+}
+
+static inline unsigned long native_store_tr(void)
+{
+ unsigned long tr;
+ asm ("str %0":"=r" (tr));
+ return tr;
+}
+
+static inline void native_load_tls(struct thread_struct *t, unsigned int cpu)
+{
+ unsigned int i;
+ struct desc_struct *gdt = get_cpu_gdt_table(cpu);
+
+ for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
+ gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i];
+}
+#else
+#define load_TLS(t, cpu) xen_load_tls(t, cpu)
+#define set_ldt xen_set_ldt
+
+extern int write_ldt_entry(void *ldt, int entry, __u32 entry_a, __u32 entry_b);
+extern int write_gdt_entry(void *gdt, int entry, __u32 entry_a, __u32 entry_b);
+
+static inline void xen_load_tls(struct thread_struct *t, unsigned int cpu)
+{
+ unsigned int i;
+ struct desc_struct *gdt = get_cpu_gdt_table(cpu) + GDT_ENTRY_TLS_MIN;
+
+ for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
+ if (HYPERVISOR_update_descriptor(virt_to_machine(&gdt[i]),
+ *(u64 *)&t->tls_array[i]))
+ BUG();
+}
#endif
#ifndef CONFIG_X86_NO_IDT
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/fixmap_32.h 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/fixmap_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -19,10 +19,8 @@
* the start of the fixmap.
*/
extern unsigned long __FIXADDR_TOP;
-#ifdef CONFIG_COMPAT_VDSO
-#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO)
-#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1)
-#endif
+#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO)
+#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1)
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
@@ -85,6 +83,9 @@ enum fixed_addresses {
#ifdef CONFIG_PCI_MMCONFIG
FIX_PCIE_MCFG,
#endif
+#ifdef CONFIG_PARAVIRT
+ FIX_PARAVIRT_BOOTMAP,
+#endif
FIX_SHARED_INFO,
#define NR_FIX_ISAMAPS 256
FIX_ISAMAP_END,
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/highmem.h 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/highmem.h 2010-03-24 17:03:18.000000000 +0100
@@ -67,12 +67,17 @@ extern void FASTCALL(kunmap_high(struct
void *kmap(struct page *page);
void kunmap(struct page *page);
+void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot);
void *kmap_atomic(struct page *page, enum km_type type);
-void *kmap_atomic_pte(struct page *page, enum km_type type);
void kunmap_atomic(void *kvaddr, enum km_type type);
void *kmap_atomic_pfn(unsigned long pfn, enum km_type type);
struct page *kmap_atomic_to_page(void *ptr);
+#define kmap_atomic_pte(page, type) \
+ kmap_atomic_prot(page, type, \
+ test_bit(PG_pinned, &(page)->flags) \
+ ? PAGE_KERNEL_RO : kmap_prot)
+
#define flush_cache_kmaps() do { } while (0)
void clear_highpage(struct page *);
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/hypervisor.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/hypervisor.h 2010-03-24 15:09:15.000000000 +0100
@@ -69,6 +69,8 @@ extern start_info_t *xen_start_info;
#define is_initial_xendomain() 0
#endif
+struct vcpu_runstate_info *setup_runstate_area(unsigned int cpu);
+
/* arch/xen/kernel/evtchn.c */
/* Force a proper event-channel callback from Xen. */
void force_evtchn_callback(void);
@@ -104,8 +106,8 @@ void xen_set_ldt(const void *ptr, unsign
#include <linux/cpumask.h>
void xen_tlb_flush_all(void);
void xen_invlpg_all(unsigned long ptr);
-void xen_tlb_flush_mask(cpumask_t *mask);
-void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr);
+void xen_tlb_flush_mask(const cpumask_t *mask);
+void xen_invlpg_mask(const cpumask_t *mask, unsigned long ptr);
#else
#define xen_tlb_flush_all xen_tlb_flush
#define xen_invlpg_all xen_invlpg
@@ -156,7 +158,9 @@ static inline void arch_leave_lazy_mmu_m
xen_multicall_flush(false);
}
-#ifndef arch_use_lazy_mmu_mode
+#if defined(CONFIG_X86_32)
+#define arch_use_lazy_mmu_mode() unlikely(x86_read_percpu(xen_lazy_mmu))
+#elif !defined(arch_use_lazy_mmu_mode)
#define arch_use_lazy_mmu_mode() unlikely(__get_cpu_var(xen_lazy_mmu))
#endif
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/irqflags_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/irqflags_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -11,6 +11,40 @@
#define _ASM_IRQFLAGS_H
#ifndef __ASSEMBLY__
+#define xen_save_fl(void) (current_vcpu_info()->evtchn_upcall_mask)
+
+#define xen_restore_fl(f) \
+do { \
+ vcpu_info_t *_vcpu; \
+ barrier(); \
+ _vcpu = current_vcpu_info(); \
+ if ((_vcpu->evtchn_upcall_mask = (f)) == 0) { \
+ barrier(); /* unmask then check (avoid races) */\
+ if (unlikely(_vcpu->evtchn_upcall_pending)) \
+ force_evtchn_callback(); \
+ } \
+} while (0)
+
+#define xen_irq_disable() \
+do { \
+ current_vcpu_info()->evtchn_upcall_mask = 1; \
+ barrier(); \
+} while (0)
+
+#define xen_irq_enable() \
+do { \
+ vcpu_info_t *_vcpu; \
+ barrier(); \
+ _vcpu = current_vcpu_info(); \
+ _vcpu->evtchn_upcall_mask = 0; \
+ barrier(); /* unmask then check (avoid races) */ \
+ if (unlikely(_vcpu->evtchn_upcall_pending)) \
+ force_evtchn_callback(); \
+} while (0)
+
+void xen_safe_halt(void);
+
+void xen_halt(void);
/*
* The use of 'barrier' in the following reflects their use as local-lock
@@ -20,48 +54,31 @@
* includes these barriers, for example.
*/
-#define __raw_local_save_flags() (current_vcpu_info()->evtchn_upcall_mask)
+#define __raw_local_save_flags() xen_save_fl()
-#define raw_local_irq_restore(x) \
-do { \
- vcpu_info_t *_vcpu; \
- barrier(); \
- _vcpu = current_vcpu_info(); \
- if ((_vcpu->evtchn_upcall_mask = (x)) == 0) { \
- barrier(); /* unmask then check (avoid races) */ \
- if (unlikely(_vcpu->evtchn_upcall_pending)) \
- force_evtchn_callback(); \
- } \
-} while (0)
+#define raw_local_irq_restore(flags) xen_restore_fl(flags)
-#define raw_local_irq_disable() \
-do { \
- current_vcpu_info()->evtchn_upcall_mask = 1; \
- barrier(); \
-} while (0)
+#define raw_local_irq_disable() xen_irq_disable()
-#define raw_local_irq_enable() \
-do { \
- vcpu_info_t *_vcpu; \
- barrier(); \
- _vcpu = current_vcpu_info(); \
- _vcpu->evtchn_upcall_mask = 0; \
- barrier(); /* unmask then check (avoid races) */ \
- if (unlikely(_vcpu->evtchn_upcall_pending)) \
- force_evtchn_callback(); \
-} while (0)
+#define raw_local_irq_enable() xen_irq_enable()
/*
* Used in the idle loop; sti takes one instruction cycle
* to complete:
*/
-void raw_safe_halt(void);
+static inline void raw_safe_halt(void)
+{
+ xen_safe_halt();
+}
/*
* Used when interrupts are already enabled or to
* shutdown the processor:
*/
-void halt(void);
+static inline void halt(void)
+{
+ xen_halt();
+}
/*
* For spinlocks, etc:
@@ -106,7 +123,7 @@ sysexit_scrit: /**** START OF SYSEXIT CR
14: __DISABLE_INTERRUPTS ; \
TRACE_IRQS_OFF ; \
sysexit_ecrit: /**** END OF SYSEXIT CRITICAL REGION ****/ ; \
- mov $__KERNEL_PDA, %ecx ; \
+ mov $__KERNEL_PERCPU, %ecx ; \
push %esp ; \
mov %ecx, %fs ; \
call evtchn_do_upcall ; \
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/mmu_context_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/mmu_context_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -6,6 +6,20 @@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
+void arch_exit_mmap(struct mm_struct *mm);
+void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
+
+void mm_pin(struct mm_struct *mm);
+void mm_unpin(struct mm_struct *mm);
+void mm_pin_all(void);
+
+static inline void xen_activate_mm(struct mm_struct *prev,
+ struct mm_struct *next)
+{
+ if (!test_bit(PG_pinned, &virt_to_page(next->pgd)->flags))
+ mm_pin(next);
+}
+
/*
* Used for LDT copy/destruction.
*/
@@ -37,10 +51,6 @@ static inline void __prepare_arch_switch
: : "r" (0) );
}
-extern void mm_pin(struct mm_struct *mm);
-extern void mm_unpin(struct mm_struct *mm);
-void mm_pin_all(void);
-
static inline void switch_mm(struct mm_struct *prev,
struct mm_struct *next,
struct task_struct *tsk)
@@ -97,11 +107,10 @@ static inline void switch_mm(struct mm_s
#define deactivate_mm(tsk, mm) \
asm("movl %0,%%gs": :"r" (0));
-static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
-{
- if (!test_bit(PG_pinned, &virt_to_page(next->pgd)->flags))
- mm_pin(next);
- switch_mm(prev, next, NULL);
-}
+#define activate_mm(prev, next) \
+ do { \
+ xen_activate_mm(prev, next); \
+ switch_mm((prev),(next),NULL); \
+ } while(0)
#endif
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/pgalloc_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/pgalloc_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -1,7 +1,6 @@
#ifndef _I386_PGALLOC_H
#define _I386_PGALLOC_H
-#include <asm/fixmap.h>
#include <linux/threads.h>
#include <linux/mm.h> /* for struct page */
#include <asm/io.h> /* for phys_to_virt and page_to_pseudophys */
@@ -69,6 +68,4 @@ do { \
#define pud_populate(mm, pmd, pte) BUG()
#endif
-#define check_pgt_cache() do { } while (0)
-
#endif /* _I386_PGALLOC_H */
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/pgtable-3level.h 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/pgtable-3level.h 2010-03-24 15:09:15.000000000 +0100
@@ -52,32 +52,40 @@ static inline int pte_exec_kernel(pte_t
* value and then use set_pte to update it. -ben
*/
-static inline void set_pte(pte_t *ptep, pte_t pte)
+static inline void xen_set_pte(pte_t *ptep, pte_t pte)
{
ptep->pte_high = pte.pte_high;
smp_wmb();
ptep->pte_low = pte.pte_low;
}
-#define set_pte_atomic(pteptr,pteval) \
- set_64bit((unsigned long long *)(pteptr),__pte_val(pteval))
-#define set_pte_at(_mm,addr,ptep,pteval) do { \
- if (((_mm) != current->mm && (_mm) != &init_mm) || \
- HYPERVISOR_update_va_mapping((addr), (pteval), 0)) \
- set_pte((ptep), (pteval)); \
-} while (0)
-
-#define set_pmd(pmdptr,pmdval) \
- xen_l2_entry_update((pmdptr), (pmdval))
-#define set_pud(pudptr,pudval) \
- xen_l3_entry_update((pudptr), (pudval))
+static inline void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep , pte_t pte)
+{
+ if ((mm != current->mm && mm != &init_mm) ||
+ HYPERVISOR_update_va_mapping(addr, pte, 0))
+ xen_set_pte(ptep, pte);
+}
+
+static inline void xen_set_pte_atomic(pte_t *ptep, pte_t pte)
+{
+ set_64bit((unsigned long long *)(ptep),__pte_val(pte));
+}
+static inline void xen_set_pmd(pmd_t *pmdp, pmd_t pmd)
+{
+ xen_l2_entry_update(pmdp, pmd);
+}
+static inline void xen_set_pud(pud_t *pudp, pud_t pud)
+{
+ xen_l3_entry_update(pudp, pud);
+}
/*
* For PTEs and PDEs, we must clear the P-bit first when clearing a page table
* entry, so clear the bottom half first and enforce ordering with a compiler
* barrier.
*/
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+static inline void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
if ((mm != current->mm && mm != &init_mm)
|| HYPERVISOR_update_va_mapping(addr, __pte(0), 0)) {
@@ -87,7 +95,18 @@ static inline void pte_clear(struct mm_s
}
}
-#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
+static inline void xen_pmd_clear(pmd_t *pmd)
+{
+ xen_l2_entry_update(pmd, __pmd(0));
+}
+
+#define set_pte(ptep, pte) xen_set_pte(ptep, pte)
+#define set_pte_at(mm, addr, ptep, pte) xen_set_pte_at(mm, addr, ptep, pte)
+#define set_pte_atomic(ptep, pte) xen_set_pte_atomic(ptep, pte)
+#define set_pmd(pmdp, pmd) xen_set_pmd(pmdp, pmd)
+#define set_pud(pudp, pud) xen_set_pud(pudp, pud)
+#define pte_clear(mm, addr, ptep) xen_pte_clear(mm, addr, ptep)
+#define pmd_clear(pmd) xen_pmd_clear(pmd)
/*
* Pentium-II erratum A13: in PAE mode we explicitly have to flush
@@ -108,7 +127,8 @@ static inline void pud_clear (pud_t * pu
#define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \
pmd_index(address))
-static inline pte_t raw_ptep_get_and_clear(pte_t *ptep, pte_t res)
+#ifdef CONFIG_SMP
+static inline pte_t xen_ptep_get_and_clear(pte_t *ptep, pte_t res)
{
uint64_t val = __pte_val(res);
if (__cmpxchg64(ptep, val, 0) != val) {
@@ -119,6 +139,9 @@ static inline pte_t raw_ptep_get_and_cle
}
return res;
}
+#else
+#define xen_ptep_get_and_clear(xp, pte) xen_local_ptep_get_and_clear(xp, pte)
+#endif
#define __HAVE_ARCH_PTEP_CLEAR_FLUSH
#define ptep_clear_flush(vma, addr, ptep) \
@@ -165,13 +188,13 @@ extern unsigned long long __supported_pt
static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
{
return __pte((((unsigned long long)page_nr << PAGE_SHIFT) |
- pgprot_val(pgprot)) & __supported_pte_mask);
+ pgprot_val(pgprot)) & __supported_pte_mask);
}
static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
{
return __pmd((((unsigned long long)page_nr << PAGE_SHIFT) |
- pgprot_val(pgprot)) & __supported_pte_mask);
+ pgprot_val(pgprot)) & __supported_pte_mask);
}
/*
@@ -191,6 +214,4 @@ static inline pmd_t pfn_pmd(unsigned lon
#define __pmd_free_tlb(tlb, x) do { } while (0)
-void vmalloc_sync_all(void);
-
#endif /* _I386_PGTABLE_3LEVEL_H */
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/pgtable-3level-defs.h 2007-06-12 13:14:02.000000000 +0200
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/pgtable-3level-defs.h 2010-03-24 15:09:15.000000000 +0100
@@ -1,7 +1,7 @@
#ifndef _I386_PGTABLE_3LEVEL_DEFS_H
#define _I386_PGTABLE_3LEVEL_DEFS_H
-#define HAVE_SHARED_KERNEL_PMD 0
+#define SHARED_KERNEL_PMD 0
/*
* PGDIR_SHIFT determines what a top-level page table entry can map
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/pgtable_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/pgtable_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -24,11 +24,11 @@
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/spinlock.h>
+#include <linux/sched.h>
/* Is this pagetable pinned? */
#define PG_pinned PG_arch_1
-struct mm_struct;
struct vm_area_struct;
/*
@@ -38,17 +38,16 @@ struct vm_area_struct;
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
extern unsigned long empty_zero_page[1024];
extern pgd_t *swapper_pg_dir;
-extern struct kmem_cache *pgd_cache;
extern struct kmem_cache *pmd_cache;
extern spinlock_t pgd_lock;
extern struct page *pgd_list;
+void check_pgt_cache(void);
void pmd_ctor(void *, struct kmem_cache *, unsigned long);
-void pgd_ctor(void *, struct kmem_cache *, unsigned long);
-void pgd_dtor(void *, struct kmem_cache *, unsigned long);
void pgtable_cache_init(void);
void paging_init(void);
+
/*
* The Linux x86 paging architecture is 'compile-time dual-mode', it
* implements both the traditional 2-level x86 page tables and the
@@ -165,6 +164,7 @@ void paging_init(void);
extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
+#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD)
#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
@@ -172,6 +172,7 @@ extern unsigned long long __PAGE_KERNEL,
#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
+#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
@@ -275,7 +276,13 @@ static inline pte_t pte_mkhuge(pte_t pte
*/
#define pte_update(mm, addr, ptep) do { } while (0)
#define pte_update_defer(mm, addr, ptep) do { } while (0)
-#define paravirt_map_pt_hook(slot, va, pfn) do { } while (0)
+
+/* local pte updates need not use xchg for locking */
+static inline pte_t xen_local_ptep_get_and_clear(pte_t *ptep, pte_t res)
+{
+ xen_set_pte(ptep, __pte(0));
+ return res;
+}
/*
* We only update the dirty/accessed state if we set
@@ -286,17 +293,34 @@ static inline pte_t pte_mkhuge(pte_t pte
*/
#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
#define ptep_set_access_flags(vma, address, ptep, entry, dirty) \
-do { \
- if (dirty) \
+({ \
+ int __changed = !pte_same(*(ptep), entry); \
+ if (__changed && (dirty)) \
ptep_establish(vma, address, ptep, entry); \
-} while (0)
+ __changed; \
+})
-/*
- * We don't actually have these, but we want to advertise them so that
- * we can encompass the flush here.
- */
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
+#define ptep_test_and_clear_dirty(vma, addr, ptep) ({ \
+ int __ret = 0; \
+ if (pte_dirty(*(ptep))) \
+ __ret = test_and_clear_bit(_PAGE_BIT_DIRTY, \
+ &(ptep)->pte_low); \
+ if (__ret) \
+ pte_update((vma)->vm_mm, addr, ptep); \
+ __ret; \
+})
+
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+#define ptep_test_and_clear_young(vma, addr, ptep) ({ \
+ int __ret = 0; \
+ if (pte_young(*(ptep))) \
+ __ret = test_and_clear_bit(_PAGE_BIT_ACCESSED, \
+ &(ptep)->pte_low); \
+ if (__ret) \
+ pte_update((vma)->vm_mm, addr, ptep); \
+ __ret; \
+})
/*
* Rules for using ptep_establish: the pte MUST be a user pte, and
@@ -323,7 +347,7 @@ do { \
int __dirty = pte_dirty(__pte); \
__pte = pte_mkclean(__pte); \
if (test_bit(PG_pinned, &virt_to_page((vma)->vm_mm->pgd)->flags)) \
- ptep_set_access_flags(vma, address, ptep, __pte, __dirty); \
+ (void)ptep_set_access_flags(vma, address, ptep, __pte, __dirty); \
else if (__dirty) \
(ptep)->pte_low = __pte.pte_low; \
__dirty; \
@@ -336,7 +360,7 @@ do { \
int __young = pte_young(__pte); \
__pte = pte_mkold(__pte); \
if (test_bit(PG_pinned, &virt_to_page((vma)->vm_mm->pgd)->flags)) \
- ptep_set_access_flags(vma, address, ptep, __pte, __young); \
+ (void)ptep_set_access_flags(vma, address, ptep, __pte, __young); \
else if (__young) \
(ptep)->pte_low = __pte.pte_low; \
__young; \
@@ -349,7 +373,7 @@ static inline pte_t ptep_get_and_clear(s
if (!pte_none(pte)
&& (mm != &init_mm
|| HYPERVISOR_update_va_mapping(addr, __pte(0), 0))) {
- pte = raw_ptep_get_and_clear(ptep, pte);
+ pte = xen_ptep_get_and_clear(ptep, pte);
pte_update(mm, addr, ptep);
}
return pte;
@@ -491,24 +515,10 @@ extern pte_t *lookup_address(unsigned lo
#endif
#if defined(CONFIG_HIGHPTE)
-#define pte_offset_map(dir, address) \
-({ \
- pte_t *__ptep; \
- unsigned pfn = pmd_val(*(dir)) >> PAGE_SHIFT; \
- __ptep = (pte_t *)kmap_atomic_pte(pfn_to_page(pfn),KM_PTE0); \
- paravirt_map_pt_hook(KM_PTE0,__ptep, pfn); \
- __ptep = __ptep + pte_index(address); \
- __ptep; \
-})
-#define pte_offset_map_nested(dir, address) \
-({ \
- pte_t *__ptep; \
- unsigned pfn = pmd_val(*(dir)) >> PAGE_SHIFT; \
- __ptep = (pte_t *)kmap_atomic_pte(pfn_to_page(pfn),KM_PTE1); \
- paravirt_map_pt_hook(KM_PTE1,__ptep, pfn); \
- __ptep = __ptep + pte_index(address); \
- __ptep; \
-})
+#define pte_offset_map(dir, address) \
+ ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE0) + pte_index(address))
+#define pte_offset_map_nested(dir, address) \
+ ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE1) + pte_index(address))
#define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
#else
@@ -597,10 +607,6 @@ int xen_change_pte_range(struct mm_struc
#define io_remap_pfn_range(vma,from,pfn,size,prot) \
direct_remap_pfn_range(vma,from,pfn,size,prot,DOMID_IO)
-#define MK_IOSPACE_PFN(space, pfn) (pfn)
-#define GET_IOSPACE(pfn) 0
-#define GET_PFN(pfn) (pfn)
-
#include <asm-generic/pgtable.h>
#endif /* _I386_PGTABLE_H */
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/processor_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/processor_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -21,6 +21,7 @@
#include <asm/percpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
+#include <asm/processor-flags.h>
#include <xen/interface/physdev.h>
/* flag for disabling the tsc */
@@ -118,7 +119,8 @@ extern char ignore_fpu_irq;
void __init cpu_detect(struct cpuinfo_x86 *c);
-extern void identify_cpu(struct cpuinfo_x86 *);
+extern void identify_boot_cpu(void);
+extern void identify_secondary_cpu(struct cpuinfo_x86 *);
extern void print_cpu_info(struct cpuinfo_x86 *);
extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
extern unsigned short num_cache_leaves;
@@ -129,29 +131,8 @@ extern void detect_ht(struct cpuinfo_x86
static inline void detect_ht(struct cpuinfo_x86 *c) {}
#endif
-/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
-
-static inline fastcall void xen_cpuid(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
+static inline void xen_cpuid(unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
{
/* ecx is often an input as well as an output. */
__asm__(XEN_CPUID
@@ -165,21 +146,6 @@ static inline fastcall void xen_cpuid(un
#define load_cr3(pgdir) write_cr3(__pa(pgdir))
/*
- * Intel CPU features in CR4
- */
-#define X86_CR4_VME 0x0001 /* enable vm86 extensions */
-#define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */
-#define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */
-#define X86_CR4_DE 0x0008 /* enable debugging extensions */
-#define X86_CR4_PSE 0x0010 /* enable page size extensions */
-#define X86_CR4_PAE 0x0020 /* enable physical address extensions */
-#define X86_CR4_MCE 0x0040 /* Machine check enable */
-#define X86_CR4_PGE 0x0080 /* enable global pages */
-#define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3 */
-#define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */
-#define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */
-
-/*
* Save the cr4 feature set we're using (ie
* Pentium 4MB enable and PPro Global page
* enable), so that any CPU's that boot up
@@ -206,26 +172,6 @@ static inline void clear_in_cr4 (unsigne
}
/*
- * NSC/Cyrix CPU configuration register indexes
- */
-
-#define CX86_PCR0 0x20
-#define CX86_GCR 0xb8
-#define CX86_CCR0 0xc0
-#define CX86_CCR1 0xc1
-#define CX86_CCR2 0xc2
-#define CX86_CCR3 0xc3
-#define CX86_CCR4 0xe8
-#define CX86_CCR5 0xe9
-#define CX86_CCR6 0xea
-#define CX86_CCR7 0xeb
-#define CX86_PCR1 0xf0
-#define CX86_DIR0 0xfe
-#define CX86_DIR1 0xff
-#define CX86_ARR_BASE 0xc4
-#define CX86_RCR_BASE 0xdc
-
-/*
* NSC/Cyrix CPU indexed register access macros
*/
@@ -351,7 +297,8 @@ typedef struct {
struct thread_struct;
#ifndef CONFIG_X86_NO_TSS
-struct tss_struct {
+/* This is the TSS defined by the hardware. */
+struct i386_hw_tss {
unsigned short back_link,__blh;
unsigned long esp0;
unsigned short ss0,__ss0h;
@@ -375,6 +322,11 @@ struct tss_struct {
unsigned short gs, __gsh;
unsigned short ldt, __ldth;
unsigned short trace, io_bitmap_base;
+} __attribute__((packed));
+
+struct tss_struct {
+ struct i386_hw_tss x86_tss;
+
/*
* The extra 1 is there because the CPU will access an
* additional byte beyond the end of the IO permission
@@ -428,10 +380,11 @@ struct thread_struct {
};
#define INIT_THREAD { \
+ .esp0 = sizeof(init_stack) + (long)&init_stack, \
.vm86_info = NULL, \
.sysenter_cs = __KERNEL_CS, \
.io_bitmap_ptr = NULL, \
- .fs = __KERNEL_PDA, \
+ .fs = __KERNEL_PERCPU, \
}
/*
@@ -441,10 +394,12 @@ struct thread_struct {
* be within the limit.
*/
#define INIT_TSS { \
- .esp0 = sizeof(init_stack) + (long)&init_stack, \
- .ss0 = __KERNEL_DS, \
- .ss1 = __KERNEL_CS, \
- .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \
+ .x86_tss = { \
+ .esp0 = sizeof(init_stack) + (long)&init_stack, \
+ .ss0 = __KERNEL_DS, \
+ .ss1 = __KERNEL_CS, \
+ .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \
+ }, \
.io_bitmap = { [ 0 ... IO_BITMAP_LONGS] = ~0 }, \
}
@@ -551,38 +506,33 @@ static inline void rep_nop(void)
#define cpu_relax() rep_nop()
-#define paravirt_enabled() 0
-#define __cpuid xen_cpuid
-
#ifndef CONFIG_X86_NO_TSS
-static inline void __load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+static inline void native_load_esp0(struct tss_struct *tss, struct thread_struct *thread)
{
- tss->esp0 = thread->esp0;
+ tss->x86_tss.esp0 = thread->esp0;
/* This can only happen when SEP is enabled, no need to test "SEP"arately */
- if (unlikely(tss->ss1 != thread->sysenter_cs)) {
- tss->ss1 = thread->sysenter_cs;
+ if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) {
+ tss->x86_tss.ss1 = thread->sysenter_cs;
wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
}
}
-#define load_esp0(tss, thread) \
- __load_esp0(tss, thread)
#else
-#define load_esp0(tss, thread) do { \
+#define xen_load_esp0(tss, thread) do { \
if (HYPERVISOR_stack_switch(__KERNEL_DS, (thread)->esp0)) \
BUG(); \
} while (0)
#endif
-/*
- * These special macros can be used to get or set a debugging register
- */
-#define get_debugreg(var, register) \
- (var) = HYPERVISOR_get_debugreg(register)
-#define set_debugreg(value, register) \
- WARN_ON(HYPERVISOR_set_debugreg(register, value))
+static inline unsigned long xen_get_debugreg(int regno)
+{
+ return HYPERVISOR_get_debugreg(regno);
+}
-#define set_iopl_mask xen_set_iopl_mask
+static inline void xen_set_debugreg(int regno, unsigned long value)
+{
+ WARN_ON(HYPERVISOR_set_debugreg(regno, value));
+}
/*
* Set IOPL bits in EFLAGS from given mask
@@ -597,6 +547,21 @@ static inline void xen_set_iopl_mask(uns
}
+#define paravirt_enabled() 0
+#define __cpuid xen_cpuid
+
+#define load_esp0 xen_load_esp0
+
+/*
+ * These special macros can be used to get or set a debugging register
+ */
+#define get_debugreg(var, register) \
+ (var) = xen_get_debugreg(register)
+#define set_debugreg(value, register) \
+ xen_set_debugreg(register, value)
+
+#define set_iopl_mask xen_set_iopl_mask
+
/*
* Generic CPUID function
* clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
@@ -749,8 +714,14 @@ extern unsigned long boot_option_idle_ov
extern void enable_sep_cpu(void);
extern int sysenter_setup(void);
-extern int init_gdt(int cpu, struct task_struct *idle);
+/* Defined in head.S */
+extern struct Xgt_desc_struct early_gdt_descr;
+
extern void cpu_set_gdt(int);
-extern void secondary_cpu_init(void);
+extern void switch_to_new_gdt(void);
+extern void cpu_init(void);
+extern void init_gdt(int cpu);
+
+extern int force_mwait;
#endif /* __ASM_I386_PROCESSOR_H */
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/smp_32.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/smp_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -8,19 +8,15 @@
#include <linux/kernel.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
-#include <asm/pda.h>
#endif
-#ifdef CONFIG_X86_LOCAL_APIC
-#ifndef __ASSEMBLY__
-#include <asm/fixmap.h>
+#if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__)
#include <asm/bitops.h>
#include <asm/mpspec.h>
+#include <asm/apic.h>
#ifdef CONFIG_X86_IO_APIC
#include <asm/io_apic.h>
#endif
-#include <asm/apic.h>
-#endif
#endif
#define BAD_APICID 0xFFu
@@ -52,9 +48,76 @@ extern void cpu_exit_clear(void);
extern void cpu_uninit(void);
#endif
-#ifndef CONFIG_PARAVIRT
+#ifndef CONFIG_XEN
+struct smp_ops
+{
+ void (*smp_prepare_boot_cpu)(void);
+ void (*smp_prepare_cpus)(unsigned max_cpus);
+ int (*cpu_up)(unsigned cpu);
+ void (*smp_cpus_done)(unsigned max_cpus);
+
+ void (*smp_send_stop)(void);
+ void (*smp_send_reschedule)(int cpu);
+ int (*smp_call_function_mask)(cpumask_t mask,
+ void (*func)(void *info), void *info,
+ int wait);
+};
+
+extern struct smp_ops smp_ops;
+
+static inline void smp_prepare_boot_cpu(void)
+{
+ smp_ops.smp_prepare_boot_cpu();
+}
+static inline void smp_prepare_cpus(unsigned int max_cpus)
+{
+ smp_ops.smp_prepare_cpus(max_cpus);
+}
+static inline int __cpu_up(unsigned int cpu)
+{
+ return smp_ops.cpu_up(cpu);
+}
+static inline void smp_cpus_done(unsigned int max_cpus)
+{
+ smp_ops.smp_cpus_done(max_cpus);
+}
+
+static inline void smp_send_stop(void)
+{
+ smp_ops.smp_send_stop();
+}
+static inline void smp_send_reschedule(int cpu)
+{
+ smp_ops.smp_send_reschedule(cpu);
+}
+static inline int smp_call_function_mask(cpumask_t mask,
+ void (*func) (void *info), void *info,
+ int wait)
+{
+ return smp_ops.smp_call_function_mask(mask, func, info, wait);
+}
+
+void native_smp_prepare_boot_cpu(void);
+void native_smp_prepare_cpus(unsigned int max_cpus);
+int native_cpu_up(unsigned int cpunum);
+void native_smp_cpus_done(unsigned int max_cpus);
+
#define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
do { } while (0)
+
+#else
+
+
+void xen_smp_send_stop(void);
+void xen_smp_send_reschedule(int cpu);
+int xen_smp_call_function_mask(cpumask_t mask,
+ void (*func) (void *info), void *info,
+ int wait);
+
+#define smp_send_stop xen_smp_send_stop
+#define smp_send_reschedule xen_smp_send_reschedule
+#define smp_call_function_mask xen_smp_call_function_mask
+
#endif
/*
@@ -62,7 +125,8 @@ do { } while (0)
* from the initial startup. We map APIC_BASE very early in page_setup(),
* so this is correct in the x86 case.
*/
-#define raw_smp_processor_id() (read_pda(cpu_number))
+DECLARE_PER_CPU(int, cpu_number);
+#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
extern cpumask_t cpu_possible_map;
#define cpu_callin_map cpu_possible_map
@@ -73,20 +137,6 @@ static inline int num_booting_cpus(void)
return cpus_weight(cpu_possible_map);
}
-#ifdef CONFIG_X86_LOCAL_APIC
-
-#ifdef APIC_DEFINITION
-extern int hard_smp_processor_id(void);
-#else
-#include <mach_apicdef.h>
-static inline int hard_smp_processor_id(void)
-{
- /* we don't want to mark this access volatile - bad code generation */
- return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
-}
-#endif
-#endif
-
#define safe_smp_processor_id() smp_processor_id()
extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);
@@ -102,10 +152,31 @@ extern unsigned int num_processors;
#define NO_PROC_ID 0xFF /* No processor magic marker */
-#endif
+#endif /* CONFIG_SMP */
#ifndef __ASSEMBLY__
+#ifdef CONFIG_X86_LOCAL_APIC
+
+#ifdef APIC_DEFINITION
+extern int hard_smp_processor_id(void);
+#else
+#include <mach_apicdef.h>
+static inline int hard_smp_processor_id(void)
+{
+ /* we don't want to mark this access volatile - bad code generation */
+ return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
+}
+#endif /* APIC_DEFINITION */
+
+#else /* CONFIG_X86_LOCAL_APIC */
+
+#ifndef CONFIG_SMP
+#define hard_smp_processor_id() 0
+#endif
+
+#endif /* CONFIG_X86_LOCAL_APIC */
+
extern u8 apicid_2_node[];
#ifdef CONFIG_X86_LOCAL_APIC
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/system_32.h 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/system_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -4,7 +4,7 @@
#include <linux/kernel.h>
#include <asm/segment.h>
#include <asm/cpufeature.h>
-#include <linux/bitops.h> /* for LOCK_PREFIX */
+#include <asm/cmpxchg.h>
#include <asm/synch_bitops.h>
#include <asm/hypervisor.h>
@@ -90,308 +90,102 @@ __asm__ __volatile__ ("movw %%dx,%1\n\t"
#define savesegment(seg, value) \
asm volatile("mov %%" #seg ",%0":"=rm" (value))
-#define read_cr0() ({ \
- unsigned int __dummy; \
- __asm__ __volatile__( \
- "movl %%cr0,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define write_cr0(x) \
- __asm__ __volatile__("movl %0,%%cr0": :"r" (x))
-
-#define read_cr2() (current_vcpu_info()->arch.cr2)
-#define write_cr2(x) \
- __asm__ __volatile__("movl %0,%%cr2": :"r" (x))
-
-#define read_cr3() ({ \
- unsigned int __dummy; \
- __asm__ ( \
- "movl %%cr3,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy = xen_cr3_to_pfn(__dummy); \
- mfn_to_pfn(__dummy) << PAGE_SHIFT; \
-})
-#define write_cr3(x) ({ \
- unsigned int __dummy = pfn_to_mfn((x) >> PAGE_SHIFT); \
- __dummy = xen_pfn_to_cr3(__dummy); \
- __asm__ __volatile__("movl %0,%%cr3": :"r" (__dummy)); \
-})
-#define read_cr4() ({ \
- unsigned int __dummy; \
- __asm__( \
- "movl %%cr4,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define read_cr4_safe() ({ \
- unsigned int __dummy; \
- /* This could fault if %cr4 does not exist */ \
- __asm__("1: movl %%cr4, %0 \n" \
- "2: \n" \
- ".section __ex_table,\"a\" \n" \
- ".long 1b,2b \n" \
- ".previous \n" \
- : "=r" (__dummy): "0" (0)); \
- __dummy; \
-})
-
-#define write_cr4(x) \
- __asm__ __volatile__("movl %0,%%cr4": :"r" (x))
-
-#define wbinvd() \
- __asm__ __volatile__ ("wbinvd": : :"memory")
-
-/* Clear the 'TS' bit */
-#define clts() (HYPERVISOR_fpu_taskswitch(0))
-
-/* Set the 'TS' bit */
-#define stts() (HYPERVISOR_fpu_taskswitch(1))
-
-#endif /* __KERNEL__ */
-
-static inline unsigned long get_limit(unsigned long segment)
+static inline void xen_clts(void)
{
- unsigned long __limit;
- __asm__("lsll %1,%0"
- :"=r" (__limit):"r" (segment));
- return __limit+1;
+ HYPERVISOR_fpu_taskswitch(0);
}
-#define nop() __asm__ __volatile__ ("nop")
-
-#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr))))
-
-#define tas(ptr) (xchg((ptr),1))
-
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x) ((struct __xchg_dummy *)(x))
+static inline unsigned long xen_read_cr0(void)
+{
+ unsigned long val;
+ asm volatile("movl %%cr0,%0\n\t" :"=r" (val));
+ return val;
+}
+static inline void xen_write_cr0(unsigned long val)
+{
+ asm volatile("movl %0,%%cr0": :"r" (val));
+}
-#ifdef CONFIG_X86_CMPXCHG64
+#define xen_read_cr2() (current_vcpu_info()->arch.cr2)
-/*
- * The semantics of XCHGCMP8B are a bit strange, this is why
- * there is a loop and the loading of %%eax and %%edx has to
- * be inside. This inlines well in most cases, the cached
- * cost is around ~38 cycles. (in the future we might want
- * to do an SIMD/3DNOW!/MMX/FPU 64-bit store here, but that
- * might have an implicit FPU-save as a cost, so it's not
- * clear which path to go.)
- *
- * cmpxchg8b must be used with the lock prefix here to allow
- * the instruction to be executed atomically, see page 3-102
- * of the instruction set reference 24319102.pdf. We need
- * the reader side to see the coherent 64bit value.
- */
-static inline void __set_64bit (unsigned long long * ptr,
- unsigned int low, unsigned int high)
+static inline void xen_write_cr2(unsigned long val)
{
- __asm__ __volatile__ (
- "\n1:\t"
- "movl (%0), %%eax\n\t"
- "movl 4(%0), %%edx\n\t"
- "lock cmpxchg8b (%0)\n\t"
- "jnz 1b"
- : /* no outputs */
- : "D"(ptr),
- "b"(low),
- "c"(high)
- : "ax","dx","memory");
+ asm volatile("movl %0,%%cr2": :"r" (val));
}
-static inline void __set_64bit_constant (unsigned long long *ptr,
- unsigned long long value)
+static inline unsigned long xen_read_cr3(void)
{
- __set_64bit(ptr,(unsigned int)(value), (unsigned int)((value)>>32ULL));
+ unsigned long val;
+ asm volatile("movl %%cr3,%0\n\t" :"=r" (val));
+ return mfn_to_pfn(xen_cr3_to_pfn(val)) << PAGE_SHIFT;
}
-#define ll_low(x) *(((unsigned int*)&(x))+0)
-#define ll_high(x) *(((unsigned int*)&(x))+1)
-static inline void __set_64bit_var (unsigned long long *ptr,
- unsigned long long value)
+static inline void xen_write_cr3(unsigned long val)
{
- __set_64bit(ptr,ll_low(value), ll_high(value));
+ val = xen_pfn_to_cr3(pfn_to_mfn(val >> PAGE_SHIFT));
+ asm volatile("movl %0,%%cr3": :"r" (val));
}
-#define set_64bit(ptr,value) \
-(__builtin_constant_p(value) ? \
- __set_64bit_constant(ptr, value) : \
- __set_64bit_var(ptr, value) )
-
-#define _set_64bit(ptr,value) \
-(__builtin_constant_p(value) ? \
- __set_64bit(ptr, (unsigned int)(value), (unsigned int)((value)>>32ULL) ) : \
- __set_64bit(ptr, ll_low(value), ll_high(value)) )
-
-#endif
-
-/*
- * Note: no "lock" prefix even on SMP: xchg always implies lock anyway
- * Note 2: xchg has side effect, so that attribute volatile is necessary,
- * but generally the primitive is invalid, *ptr is output argument. --ANK
- */
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+static inline unsigned long xen_read_cr4(void)
{
- switch (size) {
- case 1:
- __asm__ __volatile__("xchgb %b0,%1"
- :"=q" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 2:
- __asm__ __volatile__("xchgw %w0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 4:
- __asm__ __volatile__("xchgl %0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- }
- return x;
+ unsigned long val;
+ asm volatile("movl %%cr4,%0\n\t" :"=r" (val));
+ return val;
}
-/*
- * Atomic compare and exchange. Compare OLD with MEM, if identical,
- * store NEW in MEM. Return the initial value in MEM. Success is
- * indicated by comparing RETURN with OLD.
- */
-
-#ifdef CONFIG_X86_CMPXCHG
-#define __HAVE_ARCH_CMPXCHG 1
-#define cmpxchg(ptr,o,n)\
- ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
- (unsigned long)(n),sizeof(*(ptr))))
-#define sync_cmpxchg(ptr,o,n)\
- ((__typeof__(*(ptr)))__sync_cmpxchg((ptr),(unsigned long)(o),\
- (unsigned long)(n),sizeof(*(ptr))))
-#endif
+static inline unsigned long xen_read_cr4_safe(void)
+{
+ unsigned long val;
+ /* This could fault if %cr4 does not exist */
+ asm("1: movl %%cr4, %0 \n"
+ "2: \n"
+ ".section __ex_table,\"a\" \n"
+ ".long 1b,2b \n"
+ ".previous \n"
+ : "=r" (val): "0" (0));
+ return val;
+}
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
+static inline void xen_write_cr4(unsigned long val)
{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
+ asm volatile("movl %0,%%cr4": :"r" (val));
}
-/*
- * Always use locked operations when touching memory shared with a
- * hypervisor, since the system may be SMP even if the guest kernel
- * isn't.
- */
-static inline unsigned long __sync_cmpxchg(volatile void *ptr,
- unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__("lock; cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__("lock; cmpxchgw %w1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- __asm__ __volatile__("lock; cmpxchgl %1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
+static inline void xen_wbinvd(void)
+{
+ asm volatile("wbinvd": : :"memory");
}
-#ifndef CONFIG_X86_CMPXCHG
-/*
- * Building a kernel capable running on 80386. It may be necessary to
- * simulate the cmpxchg on the 80386 CPU. For that purpose we define
- * a function for each of the sizes we support.
- */
+#define read_cr0() (xen_read_cr0())
+#define write_cr0(x) (xen_write_cr0(x))
+#define read_cr2() (xen_read_cr2())
+#define write_cr2(x) (xen_write_cr2(x))
+#define read_cr3() (xen_read_cr3())
+#define write_cr3(x) (xen_write_cr3(x))
+#define read_cr4() (xen_read_cr4())
+#define read_cr4_safe() (xen_read_cr4_safe())
+#define write_cr4(x) (xen_write_cr4(x))
+#define wbinvd() (xen_wbinvd())
-extern unsigned long cmpxchg_386_u8(volatile void *, u8, u8);
-extern unsigned long cmpxchg_386_u16(volatile void *, u16, u16);
-extern unsigned long cmpxchg_386_u32(volatile void *, u32, u32);
-
-static inline unsigned long cmpxchg_386(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
-{
- switch (size) {
- case 1:
- return cmpxchg_386_u8(ptr, old, new);
- case 2:
- return cmpxchg_386_u16(ptr, old, new);
- case 4:
- return cmpxchg_386_u32(ptr, old, new);
- }
- return old;
-}
-
-#define cmpxchg(ptr,o,n) \
-({ \
- __typeof__(*(ptr)) __ret; \
- if (likely(boot_cpu_data.x86 > 3)) \
- __ret = __cmpxchg((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))); \
- else \
- __ret = cmpxchg_386((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))); \
- __ret; \
-})
-#endif
+/* Clear the 'TS' bit */
+#define clts() (xen_clts())
-#ifdef CONFIG_X86_CMPXCHG64
+/* Set the 'TS' bit */
+#define stts() (HYPERVISOR_fpu_taskswitch(1))
-static inline unsigned long long __cmpxchg64(volatile void *ptr, unsigned long long old,
- unsigned long long new)
+#endif /* __KERNEL__ */
+
+static inline unsigned long get_limit(unsigned long segment)
{
- unsigned long long prev;
- __asm__ __volatile__(LOCK_PREFIX "cmpxchg8b %3"
- : "=A"(prev)
- : "b"((unsigned long)new),
- "c"((unsigned long)(new >> 32)),
- "m"(*__xg(ptr)),
- "0"(old)
- : "memory");
- return prev;
-}
-
-#define cmpxchg64(ptr,o,n)\
- ((__typeof__(*(ptr)))__cmpxchg64((ptr),(unsigned long long)(o),\
- (unsigned long long)(n)))
+ unsigned long __limit;
+ __asm__("lsll %1,%0"
+ :"=r" (__limit):"r" (segment));
+ return __limit+1;
+}
+
+#define nop() __asm__ __volatile__ ("nop")
-#endif
-
/*
* Force strict CPU ordering.
* And yes, this is required on UP too when we're talking
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/tlbflush_32.h 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/tlbflush_32.h 2010-03-24 15:09:15.000000000 +0100
@@ -29,8 +29,13 @@
* and page-granular flushes are available only on i486 and up.
*/
+#define TLB_FLUSH_ALL 0xffffffff
+
+
#ifndef CONFIG_SMP
+#include <linux/sched.h>
+
#define flush_tlb() __flush_tlb()
#define flush_tlb_all() __flush_tlb_all()
#define local_flush_tlb() __flush_tlb()
@@ -55,7 +60,7 @@ static inline void flush_tlb_range(struc
__flush_tlb();
}
-#else
+#else /* SMP */
#include <asm/smp.h>
@@ -84,9 +89,7 @@ struct tlb_state
char __cacheline_padding[L1_CACHE_BYTES-8];
};
DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate);
-
-
-#endif
+#endif /* SMP */
#define flush_tlb_kernel_range(start, end) flush_tlb_all()
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/desc_64.h 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/desc_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -127,16 +127,6 @@ static inline void set_ldt_desc(unsigned
DESC_LDT, size * 8 - 1);
}
-static inline void set_seg_base(unsigned cpu, int entry, void *base)
-{
- struct desc_struct *d = &cpu_gdt(cpu)[entry];
- u32 addr = (u32)(u64)base;
- BUG_ON((u64)base >> 32);
- d->base0 = addr & 0xffff;
- d->base1 = (addr >> 16) & 0xff;
- d->base2 = (addr >> 24) & 0xff;
-}
-
#define LDT_entry_a(info) \
((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
/* Don't allow setting of the lm bit. It is useless anyways because
@@ -165,25 +155,15 @@ static inline void set_seg_base(unsigned
(info)->useable == 0 && \
(info)->lm == 0)
-#if TLS_SIZE != 24
-# error update this code.
-#endif
-
static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
{
-#if 0
+ unsigned int i;
u64 *gdt = (u64 *)(cpu_gdt(cpu) + GDT_ENTRY_TLS_MIN);
- gdt[0] = t->tls_array[0];
- gdt[1] = t->tls_array[1];
- gdt[2] = t->tls_array[2];
-#endif
-#define C(i) \
- if (HYPERVISOR_update_descriptor(virt_to_machine(&cpu_gdt(cpu)[GDT_ENTRY_TLS_MIN + i]), \
- t->tls_array[i])) \
- BUG();
- C(0); C(1); C(2);
-#undef C
+ for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
+ if (HYPERVISOR_update_descriptor(virt_to_machine(&gdt[i]),
+ t->tls_array[i]))
+ BUG();
}
/*
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/fixmap_64.h 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/fixmap_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -15,7 +15,6 @@
#include <asm/apicdef.h>
#include <asm/page.h>
#include <asm/vsyscall.h>
-#include <asm/vsyscall32.h>
#include <asm/acpi.h>
/*
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/irqflags_64.h 2007-06-12 13:14:13.000000000 +0200
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/irqflags_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -9,6 +9,7 @@
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
+#include <asm/processor-flags.h>
#ifndef __ASSEMBLY__
/*
@@ -50,19 +51,19 @@ static inline void raw_local_irq_disable
{
unsigned long flags = __raw_local_save_flags();
- raw_local_irq_restore((flags & ~(1 << 9)) | (1 << 18));
+ raw_local_irq_restore((flags & ~X86_EFLAGS_IF) | X86_EFLAGS_AC);
}
static inline void raw_local_irq_enable(void)
{
unsigned long flags = __raw_local_save_flags();
- raw_local_irq_restore((flags | (1 << 9)) & ~(1 << 18));
+ raw_local_irq_restore((flags | X86_EFLAGS_IF) & (~X86_EFLAGS_AC));
}
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
- return !(flags & (1<<9)) || (flags & (1 << 18));
+ return !(flags & X86_EFLAGS_IF) || (flags & X86_EFLAGS_AC);
}
#else /* CONFIG_X86_VSMP */
@@ -118,13 +119,21 @@ static inline int raw_irqs_disabled_flag
* Used in the idle loop; sti takes one instruction cycle
* to complete:
*/
-void raw_safe_halt(void);
+void xen_safe_halt(void);
+static inline void raw_safe_halt(void)
+{
+ xen_safe_halt();
+}
/*
* Used when interrupts are already enabled or to
* shutdown the processor:
*/
-void halt(void);
+void xen_halt(void);
+static inline void halt(void)
+{
+ xen_halt();
+}
#else /* __ASSEMBLY__: */
# ifdef CONFIG_TRACE_IRQFLAGS
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/mmu_context_64.h 2007-06-12 13:14:13.000000000 +0200
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/mmu_context_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -9,6 +9,9 @@
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
+void arch_exit_mmap(struct mm_struct *mm);
+void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
+
/*
* possibly do the LDT unload here?
*/
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/pgalloc_64.h 2007-06-18 08:38:13.000000000 +0200
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/pgalloc_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -1,7 +1,6 @@
#ifndef _X86_64_PGALLOC_H
#define _X86_64_PGALLOC_H
-#include <asm/fixmap.h>
#include <asm/pda.h>
#include <linux/threads.h>
#include <linux/mm.h>
@@ -100,24 +99,16 @@ static inline void pgd_list_add(pgd_t *p
struct page *page = virt_to_page(pgd);
spin_lock(&pgd_lock);
- page->index = (pgoff_t)pgd_list;
- if (pgd_list)
- pgd_list->private = (unsigned long)&page->index;
- pgd_list = page;
- page->private = (unsigned long)&pgd_list;
+ list_add(&page->lru, &pgd_list);
spin_unlock(&pgd_lock);
}
static inline void pgd_list_del(pgd_t *pgd)
{
- struct page *next, **pprev, *page = virt_to_page(pgd);
+ struct page *page = virt_to_page(pgd);
spin_lock(&pgd_lock);
- next = (struct page *)page->index;
- pprev = (struct page **)page->private;
- *pprev = next;
- if (next)
- next->private = (unsigned long)pprev;
+ list_del(&page->lru);
spin_unlock(&pgd_lock);
}
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/pgtable_64.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/pgtable_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -1,12 +1,14 @@
#ifndef _X86_64_PGTABLE_H
#define _X86_64_PGTABLE_H
+#include <linux/const.h>
+#ifndef __ASSEMBLY__
+
/*
* This file contains the functions and defines necessary to modify and use
* the x86-64 page table tree.
*/
#include <asm/processor.h>
-#include <asm/fixmap.h>
#include <asm/bitops.h>
#include <linux/threads.h>
#include <linux/sched.h>
@@ -35,11 +37,9 @@ extern pte_t *lookup_address(unsigned lo
#endif
extern pud_t level3_kernel_pgt[512];
-extern pud_t level3_physmem_pgt[512];
extern pud_t level3_ident_pgt[512];
extern pmd_t level2_kernel_pgt[512];
extern pgd_t init_level4_pgt[];
-extern pgd_t boot_level4_pgt[];
extern unsigned long __supported_pte_mask;
#define swapper_pg_dir init_level4_pgt
@@ -54,6 +54,8 @@ extern void clear_kernel_mapping(unsigne
extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
+#endif /* !__ASSEMBLY__ */
+
/*
* PGDIR_SHIFT determines what a top-level page table entry can map
*/
@@ -78,6 +80,8 @@ extern unsigned long empty_zero_page[PAG
*/
#define PTRS_PER_PTE 512
+#ifndef __ASSEMBLY__
+
#define pte_ERROR(e) \
printk("%s:%d: bad pte %p(%016lx pfn %010lx).\n", __FILE__, __LINE__, \
&(e), __pte_val(e), pte_pfn(e))
@@ -120,22 +124,23 @@ static inline void pgd_clear (pgd_t * pg
#define pte_pgprot(a) (__pgprot((a).pte & ~PHYSICAL_PAGE_MASK))
-#define PMD_SIZE (1UL << PMD_SHIFT)
+#endif /* !__ASSEMBLY__ */
+
+#define PMD_SIZE (_AC(1,UL) << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
-#define PUD_SIZE (1UL << PUD_SHIFT)
+#define PUD_SIZE (_AC(1,UL) << PUD_SHIFT)
#define PUD_MASK (~(PUD_SIZE-1))
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
+#define PGDIR_SIZE (_AC(1,UL) << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))
#define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1)
#define FIRST_USER_ADDRESS 0
-#ifndef __ASSEMBLY__
-#define MAXMEM 0x6fffffffffUL
-#define VMALLOC_START 0xffffc20000000000UL
-#define VMALLOC_END 0xffffe1ffffffffffUL
-#define MODULES_VADDR 0xffffffff88000000UL
-#define MODULES_END 0xffffffffff000000UL
+#define MAXMEM _AC(0x6fffffffff, UL)
+#define VMALLOC_START _AC(0xffffc20000000000, UL)
+#define VMALLOC_END _AC(0xffffe1ffffffffff, UL)
+#define MODULES_VADDR _AC(0xffffffff88000000, UL)
+#define MODULES_END _AC(0xffffffffff000000, UL)
#define MODULES_LEN (MODULES_END - MODULES_VADDR)
#define _PAGE_BIT_PRESENT 0
@@ -161,16 +166,18 @@ static inline void pgd_clear (pgd_t * pg
#define _PAGE_GLOBAL 0x100 /* Global TLB entry */
#define _PAGE_PROTNONE 0x080 /* If not present */
-#define _PAGE_NX (1UL<<_PAGE_BIT_NX)
+#define _PAGE_NX (_AC(1,UL)<<_PAGE_BIT_NX)
/* Mapped page is I/O or foreign and has no associated page struct. */
#define _PAGE_IO 0x200
+#ifndef __ASSEMBLY__
#if CONFIG_XEN_COMPAT <= 0x030002
extern unsigned int __kernel_page_user;
#else
#define __kernel_page_user 0
#endif
+#endif
#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY | __kernel_page_user)
@@ -235,6 +242,8 @@ extern unsigned int __kernel_page_user;
#define __S110 PAGE_SHARED_EXEC
#define __S111 PAGE_SHARED_EXEC
+#ifndef __ASSEMBLY__
+
static inline unsigned long pgd_bad(pgd_t pgd)
{
return __pgd_val(pgd) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
@@ -346,6 +355,20 @@ static inline pte_t pte_mkwrite(pte_t pt
static inline pte_t pte_mkhuge(pte_t pte) { __pte_val(pte) |= _PAGE_PSE; return pte; }
static inline pte_t pte_clrhuge(pte_t pte) { __pte_val(pte) &= ~_PAGE_PSE; return pte; }
+static inline int ptep_test_and_clear_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
+{
+ if (!pte_dirty(*ptep))
+ return 0;
+ return test_and_clear_bit(_PAGE_BIT_DIRTY, &ptep->pte);
+}
+
+static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
+{
+ if (!pte_young(*ptep))
+ return 0;
+ return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte);
+}
+
static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
pte_t pte = *ptep;
@@ -470,18 +493,12 @@ static inline pte_t pte_modify(pte_t pte
* bit at the same time. */
#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
#define ptep_set_access_flags(vma, address, ptep, entry, dirty) \
- do { \
- if (dirty) \
- ptep_establish(vma, address, ptep, entry); \
- } while (0)
-
-
-/*
- * i386 says: We don't actually have these, but we want to advertise
- * them so that we can encompass the flush here.
- */
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+({ \
+ int __changed = !pte_same(*(ptep), entry); \
+ if (__changed && (dirty)) \
+ ptep_establish(vma, address, ptep, entry); \
+ __changed; \
+})
#define __HAVE_ARCH_PTEP_CLEAR_DIRTY_FLUSH
#define ptep_clear_flush_dirty(vma, address, ptep) \
@@ -490,7 +507,7 @@ static inline pte_t pte_modify(pte_t pte
int __dirty = pte_dirty(__pte); \
__pte = pte_mkclean(__pte); \
if ((vma)->vm_mm->context.pinned) \
- ptep_set_access_flags(vma, address, ptep, __pte, __dirty); \
+ (void)ptep_set_access_flags(vma, address, ptep, __pte, __dirty); \
else if (__dirty) \
set_pte(ptep, __pte); \
__dirty; \
@@ -503,7 +520,7 @@ static inline pte_t pte_modify(pte_t pte
int __young = pte_young(__pte); \
__pte = pte_mkold(__pte); \
if ((vma)->vm_mm->context.pinned) \
- ptep_set_access_flags(vma, address, ptep, __pte, __young); \
+ (void)ptep_set_access_flags(vma, address, ptep, __pte, __young); \
else if (__young) \
set_pte(ptep, __pte); \
__young; \
@@ -517,10 +534,7 @@ static inline pte_t pte_modify(pte_t pte
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
extern spinlock_t pgd_lock;
-extern struct page *pgd_list;
-void vmalloc_sync_all(void);
-
-#endif /* !__ASSEMBLY__ */
+extern struct list_head pgd_list;
extern int kern_addr_valid(unsigned long addr);
@@ -559,10 +573,6 @@ int xen_change_pte_range(struct mm_struc
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
direct_remap_pfn_range(vma,vaddr,pfn,size,prot,DOMID_IO)
-#define MK_IOSPACE_PFN(space, pfn) (pfn)
-#define GET_IOSPACE(pfn) 0
-#define GET_PFN(pfn) (pfn)
-
#define HAVE_ARCH_UNMAPPED_AREA
#define pgtable_cache_init() do { } while (0)
@@ -576,11 +586,14 @@ int xen_change_pte_range(struct mm_struc
#define kc_offset_to_vaddr(o) \
(((o) & (1UL << (__VIRTUAL_MASK_SHIFT-1))) ? ((o) | (~__VIRTUAL_MASK)) : (o))
+#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
#define __HAVE_ARCH_PTEP_CLEAR_FLUSH
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
#define __HAVE_ARCH_PTE_SAME
#include <asm-generic/pgtable.h>
+#endif /* !__ASSEMBLY__ */
#endif /* _X86_64_PGTABLE_H */
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/processor_64.h 2010-03-24 15:08:58.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/processor_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -20,6 +20,7 @@
#include <asm/percpu.h>
#include <linux/personality.h>
#include <linux/cpumask.h>
+#include <asm/processor-flags.h>
#define TF_MASK 0x00000100
#define IF_MASK 0x00000200
@@ -103,42 +104,6 @@ extern unsigned int init_intel_cacheinfo
extern unsigned short num_cache_leaves;
/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
-
-/*
- * Intel CPU features in CR4
- */
-#define X86_CR4_VME 0x0001 /* enable vm86 extensions */
-#define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */
-#define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */
-#define X86_CR4_DE 0x0008 /* enable debugging extensions */
-#define X86_CR4_PSE 0x0010 /* enable page size extensions */
-#define X86_CR4_PAE 0x0020 /* enable physical address extensions */
-#define X86_CR4_MCE 0x0040 /* Machine check enable */
-#define X86_CR4_PGE 0x0080 /* enable global pages */
-#define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3 */
-#define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */
-#define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */
-
-/*
* Save the cr4 feature set we're using (ie
* Pentium 4MB enable and PPro Global page
* enable), so that any CPU's that boot up
@@ -203,7 +168,7 @@ struct i387_fxsave_struct {
u32 mxcsr;
u32 mxcsr_mask;
u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
- u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 128 bytes */
+ u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
u32 padding[24];
} __attribute__ ((aligned (16)));
@@ -436,22 +401,6 @@ static inline void prefetchw(void *x)
#define cpu_relax() rep_nop()
/*
- * NSC/Cyrix CPU configuration register indexes
- */
-#define CX86_CCR0 0xc0
-#define CX86_CCR1 0xc1
-#define CX86_CCR2 0xc2
-#define CX86_CCR3 0xc3
-#define CX86_CCR4 0xe8
-#define CX86_CCR5 0xe9
-#define CX86_CCR6 0xea
-#define CX86_CCR7 0xeb
-#define CX86_DIR0 0xfe
-#define CX86_DIR1 0xff
-#define CX86_ARR_BASE 0xc4
-#define CX86_RCR_BASE 0xdc
-
-/*
* NSC/Cyrix CPU indexed register access macros
*/
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/smp_64.h 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/smp_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -11,12 +11,11 @@
extern int disable_apic;
#ifdef CONFIG_X86_LOCAL_APIC
-#include <asm/fixmap.h>
#include <asm/mpspec.h>
+#include <asm/apic.h>
#ifdef CONFIG_X86_IO_APIC
#include <asm/io_apic.h>
#endif
-#include <asm/apic.h>
#include <asm/thread_info.h>
#endif
@@ -41,7 +40,6 @@ extern void lock_ipi_call_lock(void);
extern void unlock_ipi_call_lock(void);
extern int smp_num_siblings;
extern void smp_send_reschedule(int cpu);
-void smp_stop_cpu(void);
extern cpumask_t cpu_sibling_map[NR_CPUS];
extern cpumask_t cpu_core_map[NR_CPUS];
@@ -62,14 +60,6 @@ static inline int num_booting_cpus(void)
#define raw_smp_processor_id() read_pda(cpunumber)
-#ifdef CONFIG_X86_LOCAL_APIC
-static inline int hard_smp_processor_id(void)
-{
- /* we don't want to mark this access volatile - bad code generation */
- return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
-}
-#endif
-
extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);
extern void prefill_possible_map(void);
@@ -78,6 +68,14 @@ extern unsigned __cpuinitdata disabled_c
#define NO_PROC_ID 0xFF /* No processor magic marker */
+#endif /* CONFIG_SMP */
+
+#ifdef CONFIG_X86_LOCAL_APIC
+static inline int hard_smp_processor_id(void)
+{
+ /* we don't want to mark this access volatile - bad code generation */
+ return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
+}
#endif
/*
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/system_64.h 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/system_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -3,7 +3,7 @@
#include <linux/kernel.h>
#include <asm/segment.h>
-#include <asm/alternative.h>
+#include <asm/cmpxchg.h>
#include <asm/synch_bitops.h>
#include <asm/hypervisor.h>
@@ -43,7 +43,7 @@
[threadrsp] "i" (offsetof(struct task_struct, thread.rsp)), \
[ti_flags] "i" (offsetof(struct thread_info, flags)),\
[tif_fork] "i" (TIF_FORK), \
- [thread_info] "i" (offsetof(struct task_struct, thread_info)), \
+ [thread_info] "i" (offsetof(struct task_struct, stack)), \
[pda_pcurrent] "i" (offsetof(struct x8664_pda, pcurrent)) \
: "memory", "cc" __EXTRA_CLOBBER)
@@ -92,6 +92,12 @@ static inline void write_cr0(unsigned lo
machine_to_phys(__dummy); \
})
+static inline void write_cr3(unsigned long val)
+{
+ val = phys_to_machine(val);
+ asm volatile("movq %0,%%cr3" :: "r" (val) : "memory");
+}
+
static inline unsigned long read_cr4(void)
{
unsigned long cr4;
@@ -101,7 +107,7 @@ static inline unsigned long read_cr4(voi
static inline void write_cr4(unsigned long val)
{
- asm volatile("movq %0,%%cr4" :: "r" (val));
+ asm volatile("movq %0,%%cr4" :: "r" (val) : "memory");
}
#define stts() (HYPERVISOR_fpu_taskswitch(1))
@@ -122,100 +128,6 @@ static inline void sched_cacheflush(void
#define nop() __asm__ __volatile__ ("nop")
-#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr))))
-
-#define tas(ptr) (xchg((ptr),1))
-
-#define __xg(x) ((volatile long *)(x))
-
-static inline void set_64bit(volatile unsigned long *ptr, unsigned long val)
-{
- *ptr = val;
-}
-
-#define _set_64bit set_64bit
-
-/*
- * Note: no "lock" prefix even on SMP: xchg always implies lock anyway
- * Note 2: xchg has side effect, so that attribute volatile is necessary,
- * but generally the primitive is invalid, *ptr is output argument. --ANK
- */
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
-{
- switch (size) {
- case 1:
- __asm__ __volatile__("xchgb %b0,%1"
- :"=q" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 2:
- __asm__ __volatile__("xchgw %w0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 4:
- __asm__ __volatile__("xchgl %k0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 8:
- __asm__ __volatile__("xchgq %0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- }
- return x;
-}
-
-/*
- * Atomic compare and exchange. Compare OLD with MEM, if identical,
- * store NEW in MEM. Return the initial value in MEM. Success is
- * indicated by comparing RETURN with OLD.
- */
-
-#define __HAVE_ARCH_CMPXCHG 1
-
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %k1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 8:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgq %1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
-}
-
-#define cmpxchg(ptr,o,n)\
- ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
- (unsigned long)(n),sizeof(*(ptr))))
-
#ifdef CONFIG_SMP
#define smp_mb() mb()
#define smp_rmb() rmb()
--- head-2010-05-25.orig/arch/x86/include/mach-xen/asm/tlbflush_64.h 2010-03-24 15:06:12.000000000 +0100
+++ head-2010-05-25/arch/x86/include/mach-xen/asm/tlbflush_64.h 2010-03-24 15:09:15.000000000 +0100
@@ -2,7 +2,9 @@
#define _X8664_TLBFLUSH_H
#include <linux/mm.h>
+#include <linux/sched.h>
#include <asm/processor.h>
+#include <asm/system.h>
#define __flush_tlb() xen_tlb_flush()
--- head-2010-05-25.orig/include/linux/pci.h 2010-03-24 14:53:41.000000000 +0100
+++ head-2010-05-25/include/linux/pci.h 2010-03-24 15:09:15.000000000 +0100
@@ -321,7 +321,7 @@ struct pci_dev {
int rom_attr_enabled; /* has display of the rom attribute been enabled? */
struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
-#ifdef CONFIG_PCI_MSI
+#if defined(CONFIG_PCI_MSI) && !defined(CONFIG_XEN)
struct list_head msi_list;
#endif
struct pci_vpd *vpd;
--- head-2010-05-25.orig/lib/swiotlb-xen.c 2010-03-24 15:09:08.000000000 +0100
+++ head-2010-05-25/lib/swiotlb-xen.c 2010-03-24 15:09:15.000000000 +0100
@@ -723,7 +723,6 @@ swiotlb_dma_supported (struct device *hw
return (mask >= ((1UL << dma_bits) - 1));
}
-EXPORT_SYMBOL(swiotlb_init);
EXPORT_SYMBOL(swiotlb_map_single);
EXPORT_SYMBOL(swiotlb_unmap_single);
EXPORT_SYMBOL(swiotlb_map_sg);
--- head-2010-05-25.orig/mm/vmalloc.c 2010-05-25 09:12:09.000000000 +0200
+++ head-2010-05-25/mm/vmalloc.c 2010-03-24 15:09:15.000000000 +0100
@@ -1472,6 +1472,13 @@ static void *__vmalloc_area_node(struct
struct page **pages;
unsigned int nr_pages, array_size, i;
gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;
+#ifdef CONFIG_XEN
+ gfp_t dma_mask = gfp_mask & (__GFP_DMA | __GFP_DMA32);
+
+ BUILD_BUG_ON((__GFP_DMA | __GFP_DMA32) != (__GFP_DMA + __GFP_DMA32));
+ if (dma_mask == (__GFP_DMA | __GFP_DMA32))
+ gfp_mask &= ~(__GFP_DMA | __GFP_DMA32);
+#endif
nr_pages = (area->size - PAGE_SIZE) >> PAGE_SHIFT;
array_size = (nr_pages * sizeof(struct page *));
@@ -1507,6 +1514,16 @@ static void *__vmalloc_area_node(struct
goto fail;
}
area->pages[i] = page;
+#ifdef CONFIG_XEN
+ if (dma_mask) {
+ if (xen_limit_pages_to_max_mfn(page, 0, 32)) {
+ area->nr_pages = i + 1;
+ goto fail;
+ }
+ if (gfp_mask & __GFP_ZERO)
+ clear_highpage(page);
+ }
+#endif
}
if (map_vm_area(area, prot, &pages))
@@ -1666,6 +1683,8 @@ void *vmalloc_exec(unsigned long size)
#define GFP_VMALLOC32 GFP_DMA32 | GFP_KERNEL
#elif defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA)
#define GFP_VMALLOC32 GFP_DMA | GFP_KERNEL
+#elif defined(CONFIG_XEN)
+#define GFP_VMALLOC32 __GFP_DMA | __GFP_DMA32 | GFP_KERNEL
#else
#define GFP_VMALLOC32 GFP_KERNEL
#endif
--- head-2010-05-25.orig/net/core/dev.c 2010-05-25 09:21:50.000000000 +0200
+++ head-2010-05-25/net/core/dev.c 2010-05-25 09:22:00.000000000 +0200
@@ -2015,12 +2015,17 @@ static struct netdev_queue *dev_pick_tx(
inline int skb_checksum_setup(struct sk_buff *skb)
{
if (skb->proto_csum_blank) {
+ struct iphdr *iph;
+ unsigned char *th;
+
if (skb->protocol != htons(ETH_P_IP))
goto out;
- skb->h.raw = (unsigned char *)skb->nh.iph + 4*skb->nh.iph->ihl;
- if (skb->h.raw >= skb->tail)
+ iph = ip_hdr(skb);
+ th = skb_network_header(skb) + 4 * iph->ihl;
+ if (th >= skb_tail_pointer(skb))
goto out;
- switch (skb->nh.iph->protocol) {
+ skb->csum_start = th - skb->head;
+ switch (iph->protocol) {
case IPPROTO_TCP:
skb->csum_offset = offsetof(struct tcphdr, check);
break;
@@ -2031,10 +2036,10 @@ inline int skb_checksum_setup(struct sk_
if (net_ratelimit())
printk(KERN_ERR "Attempting to checksum a non-"
"TCP/UDP packet, dropping a protocol"
- " %d packet", skb->nh.iph->protocol);
+ " %d packet", iph->protocol);
goto out;
}
- if ((skb->h.raw + skb->csum_offset + 2) > skb->tail)
+ if ((th + skb->csum_offset + 2) > skb_tail_pointer(skb))
goto out;
skb->ip_summed = CHECKSUM_PARTIAL;
skb->proto_csum_blank = 0;
--- head-2010-05-25.orig/scripts/Makefile.xen.awk 2007-08-06 15:10:49.000000000 +0200
+++ head-2010-05-25/scripts/Makefile.xen.awk 2010-03-24 15:09:15.000000000 +0100
@@ -13,7 +13,7 @@ BEGIN {
next
}
-/:[[:space:]]*%\.[cS][[:space:]]/ {
+/:[[:space:]]*\$\(src\)\/%\.[cS][[:space:]]/ {
line = gensub(/%.([cS])/, "%-xen.\\1", "g", $0)
line = gensub(/(single-used-m)/, "xen-\\1", "g", line)
print line
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