375 lines
9.9 KiB
Plaintext
375 lines
9.9 KiB
Plaintext
From: jbeulich@novell.com
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Subject: Disallow all accesses to the local APIC page
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Patch-mainline: n/a
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References: bnc#191115
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--- head-2010-05-12.orig/arch/x86/include/asm/apic.h 2010-03-24 15:01:37.000000000 +0100
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+++ head-2010-05-12/arch/x86/include/asm/apic.h 2010-03-25 14:40:58.000000000 +0100
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@@ -10,7 +10,9 @@
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#include <asm/processor.h>
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#include <asm/apicdef.h>
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#include <asm/atomic.h>
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+#ifndef CONFIG_XEN
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#include <asm/fixmap.h>
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+#endif
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#include <asm/mpspec.h>
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#include <asm/system.h>
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#include <asm/msr.h>
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@@ -49,6 +51,7 @@ static inline void generic_apic_probe(vo
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#ifdef CONFIG_X86_LOCAL_APIC
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extern unsigned int apic_verbosity;
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+#ifndef CONFIG_XEN
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extern int local_apic_timer_c2_ok;
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extern int disable_apic;
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@@ -121,6 +124,8 @@ extern u64 native_apic_icr_read(void);
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extern int x2apic_mode;
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+#endif /* CONFIG_XEN */
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+
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#ifdef CONFIG_X86_X2APIC
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/*
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* Make previous memory operations globally visible before
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@@ -367,6 +372,8 @@ struct apic {
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*/
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extern struct apic *apic;
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+#ifndef CONFIG_XEN
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+
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/*
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* APIC functionality to boot other CPUs - only used on SMP:
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*/
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@@ -460,6 +467,8 @@ static inline void default_wait_for_init
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extern void generic_bigsmp_probe(void);
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+#endif /* CONFIG_XEN */
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+
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#ifdef CONFIG_X86_LOCAL_APIC
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@@ -479,6 +488,8 @@ static inline const struct cpumask *defa
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DECLARE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid);
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+#ifndef CONFIG_XEN
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+
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static inline unsigned int read_apic_id(void)
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{
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unsigned int reg;
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@@ -587,6 +598,8 @@ extern int default_cpu_present_to_apicid
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extern int default_check_phys_apicid_present(int phys_apicid);
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#endif
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+#endif /* CONFIG_XEN */
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+
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#endif /* CONFIG_X86_LOCAL_APIC */
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#ifdef CONFIG_X86_32
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--- head-2010-05-12.orig/arch/x86/include/asm/apicdef.h 2010-05-12 08:55:22.000000000 +0200
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+++ head-2010-05-12/arch/x86/include/asm/apicdef.h 2010-03-25 14:40:58.000000000 +0100
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@@ -17,6 +17,8 @@
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*/
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#define IO_APIC_SLOT_SIZE 1024
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+#ifndef CONFIG_XEN
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+
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#define APIC_ID 0x20
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#define APIC_LVR 0x30
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@@ -142,6 +144,16 @@
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#define APIC_BASE_MSR 0x800
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#define X2APIC_ENABLE (1UL << 10)
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+#else /* CONFIG_XEN */
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+
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+enum {
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+ APIC_DEST_ALLBUT = 0x1,
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+ APIC_DEST_SELF,
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+ APIC_DEST_ALLINC
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+};
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+
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+#endif /* CONFIG_XEN */
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+
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#ifdef CONFIG_X86_32
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# define MAX_IO_APICS 64
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#else
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@@ -149,6 +161,8 @@
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# define MAX_LOCAL_APIC 32768
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#endif
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+#ifndef CONFIG_XEN
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+
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/*
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* All x86-64 systems are xAPIC compatible.
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* In the following, "apicid" is a physical APIC ID.
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@@ -419,6 +433,8 @@ struct local_apic {
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#undef u32
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+#endif /* CONFIG_XEN */
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+
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#ifdef CONFIG_X86_32
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#define BAD_APICID 0xFFu
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#else
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--- head-2010-05-12.orig/arch/x86/include/mach-xen/asm/fixmap.h 2010-04-15 10:29:09.000000000 +0200
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+++ head-2010-05-12/arch/x86/include/mach-xen/asm/fixmap.h 2010-04-15 11:47:12.000000000 +0200
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@@ -17,7 +17,6 @@
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#ifndef __ASSEMBLY__
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#include <linux/kernel.h>
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#include <asm/acpi.h>
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-#include <asm/apicdef.h>
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#include <asm/page.h>
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#ifdef CONFIG_X86_32
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#include <linux/threads.h>
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@@ -85,10 +84,10 @@ enum fixed_addresses {
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#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
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FIX_OHCI1394_BASE,
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#endif
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+#ifndef CONFIG_XEN
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#ifdef CONFIG_X86_LOCAL_APIC
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FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
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#endif
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-#ifndef CONFIG_XEN
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#ifdef CONFIG_X86_IO_APIC
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FIX_IO_APIC_BASE_0,
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FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
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--- head-2010-05-12.orig/arch/x86/include/mach-xen/asm/smp.h 2010-04-26 11:32:06.000000000 +0200
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+++ head-2010-05-12/arch/x86/include/mach-xen/asm/smp.h 2010-04-28 17:21:52.000000000 +0200
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@@ -15,7 +15,7 @@
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# include <asm/io_apic.h>
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# endif
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#endif
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-#include <asm/thread_info.h>
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+#include <linux/thread_info.h>
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#include <asm/cpumask.h>
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extern int smp_num_siblings;
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@@ -181,7 +181,7 @@ extern unsigned disabled_cpus __cpuinitd
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#include <asm/smp-processor-id.h>
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-#ifdef CONFIG_X86_LOCAL_APIC
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+#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_XEN)
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#ifndef CONFIG_X86_64
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static inline int logical_smp_processor_id(void)
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--- head-2010-05-12.orig/arch/x86/kernel/acpi/boot.c 2010-04-15 10:07:05.000000000 +0200
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+++ head-2010-05-12/arch/x86/kernel/acpi/boot.c 2010-04-15 11:47:20.000000000 +0200
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@@ -74,13 +74,13 @@ int acpi_sci_override_gsi __initdata;
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#ifndef CONFIG_XEN
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int acpi_skip_timer_override __initdata;
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int acpi_use_timer_override __initdata;
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-#else
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-#define acpi_skip_timer_override 0
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-#endif
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#ifdef CONFIG_X86_LOCAL_APIC
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static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
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#endif
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+#else
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+#define acpi_skip_timer_override 0
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+#endif
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#ifndef __HAVE_ARCH_CMPXCHG
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#warning ACPI uses CMPXCHG, i486 and later hardware
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@@ -139,6 +139,7 @@ static int __init acpi_parse_madt(struct
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return -ENODEV;
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}
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+#ifndef CONFIG_XEN
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if (madt->address) {
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acpi_lapic_addr = (u64) madt->address;
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@@ -146,7 +147,6 @@ static int __init acpi_parse_madt(struct
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madt->address);
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}
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-#ifndef CONFIG_XEN
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default_acpi_madt_oem_check(madt->header.oem_id,
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madt->header.oem_table_id);
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#endif
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@@ -247,6 +247,7 @@ static int __init
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acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
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const unsigned long end)
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{
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+#ifndef CONFIG_XEN
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struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
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lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
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@@ -255,6 +256,7 @@ acpi_parse_lapic_addr_ovr(struct acpi_su
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return -EINVAL;
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acpi_lapic_addr = lapic_addr_ovr->address;
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+#endif
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return 0;
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}
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@@ -1094,7 +1096,7 @@ int mp_register_gsi(struct device *dev,
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ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
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-#ifdef CONFIG_X86_32
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+#if defined(CONFIG_X86_32) && !defined(CONFIG_XEN)
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if (ioapic_renumber_irq)
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gsi = ioapic_renumber_irq(ioapic, gsi);
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#endif
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--- head-2010-05-12.orig/arch/x86/kernel/apic/io_apic-xen.c 2010-05-12 09:09:25.000000000 +0200
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+++ head-2010-05-12/arch/x86/kernel/apic/io_apic-xen.c 2010-05-12 09:15:16.000000000 +0200
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@@ -1071,7 +1071,9 @@ static inline int irq_trigger(int idx)
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return MPBIOS_trigger(idx);
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}
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+#ifndef CONFIG_XEN
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int (*ioapic_renumber_irq)(int ioapic, int irq);
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+#endif
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static int pin_2_irq(int idx, int apic, int pin)
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{
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int irq, i;
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@@ -1093,11 +1095,13 @@ static int pin_2_irq(int idx, int apic,
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while (i < apic)
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irq += nr_ioapic_registers[i++];
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irq += pin;
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+#ifndef CONFIG_XEN
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/*
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* For MPS mode, so far only needed by ES7000 platform
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*/
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if (ioapic_renumber_irq)
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irq = ioapic_renumber_irq(apic, irq);
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+#endif
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}
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#ifdef CONFIG_X86_32
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@@ -4106,10 +4110,12 @@ int io_apic_set_pci_routing(struct devic
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u8 __init io_apic_unique_id(u8 id)
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{
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#ifdef CONFIG_X86_32
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+#ifndef CONFIG_XEN
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if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
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!APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
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return io_apic_get_unique_id(nr_ioapics, id);
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else
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+#endif
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return id;
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#else
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int i;
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--- head-2010-05-12.orig/arch/x86/kernel/irq-xen.c 2010-01-25 13:46:29.000000000 +0100
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+++ head-2010-05-12/arch/x86/kernel/irq-xen.c 2010-03-25 14:40:58.000000000 +0100
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@@ -15,9 +15,9 @@
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#include <asm/mce.h>
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#include <asm/hw_irq.h>
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+#ifndef CONFIG_XEN
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atomic_t irq_err_count;
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-#ifndef CONFIG_XEN
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/* Function pointer for generic interrupt vector handling */
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void (*x86_platform_ipi_callback)(void) = NULL;
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#endif
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@@ -57,7 +57,7 @@ static int show_other_interrupts(struct
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", irq_stats(j)->__nmi_count);
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seq_printf(p, " Non-maskable interrupts\n");
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-#ifdef CONFIG_X86_LOCAL_APIC
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+#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_XEN)
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seq_printf(p, "%*s: ", prec, "LOC");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs);
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@@ -122,10 +122,12 @@ static int show_other_interrupts(struct
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seq_printf(p, "%10u ", per_cpu(mce_poll_count, j));
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seq_printf(p, " Machine check polls\n");
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#endif
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+#ifndef CONFIG_XEN
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seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
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#if defined(CONFIG_X86_IO_APIC)
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seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count));
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#endif
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+#endif
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return 0;
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}
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@@ -221,12 +223,16 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
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u64 arch_irq_stat(void)
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{
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+#ifndef CONFIG_XEN
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u64 sum = atomic_read(&irq_err_count);
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#ifdef CONFIG_X86_IO_APIC
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sum += atomic_read(&irq_mis_count);
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#endif
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return sum;
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+#else
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+ return 0;
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+#endif
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}
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--- head-2010-05-12.orig/arch/x86/kernel/mpparse-xen.c 2010-04-15 10:48:32.000000000 +0200
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+++ head-2010-05-12/arch/x86/kernel/mpparse-xen.c 2010-03-25 14:40:58.000000000 +0100
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@@ -288,7 +288,9 @@ static int __init smp_check_mpc(struct m
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printk(KERN_INFO "MPTABLE: Product ID: %s\n", str);
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+#ifndef CONFIG_XEN
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printk(KERN_INFO "MPTABLE: APIC at: 0x%X\n", mpc->lapic);
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+#endif
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return 1;
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}
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@@ -320,12 +322,14 @@ static int __init smp_read_mpc(struct mp
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if (!smp_check_mpc(mpc, oem, str))
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return 0;
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-#if defined(CONFIG_X86_32) && !defined(CONFIG_XEN)
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+#ifndef CONFIG_XEN
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+#ifdef CONFIG_X86_32
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generic_mps_oem_check(mpc, oem, str);
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#endif
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/* save the local APIC address, it might be non-default */
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if (!acpi_lapic)
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mp_lapic_addr = mpc->lapic;
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+#endif
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if (early)
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return 1;
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@@ -512,10 +516,12 @@ static inline void __init construct_defa
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int linttypes[2] = { mp_ExtINT, mp_NMI };
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int i;
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+#ifndef CONFIG_XEN
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/*
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* local APIC has default address
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*/
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mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
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+#endif
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/*
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* 2 CPUs, numbered 0 & 1.
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@@ -648,10 +654,12 @@ void __init default_get_smp_config(unsig
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*/
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if (mpf->feature1 != 0) {
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if (early) {
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+#ifndef CONFIG_XEN
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/*
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* local APIC has default address
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*/
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mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
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+#endif
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return;
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}
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--- head-2010-05-12.orig/drivers/xen/core/smpboot.c 2010-04-28 16:44:14.000000000 +0200
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+++ head-2010-05-12/drivers/xen/core/smpboot.c 2010-04-28 17:21:59.000000000 +0200
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@@ -341,7 +341,7 @@ void __init smp_prepare_cpus(unsigned in
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* Here we can be sure that there is an IO-APIC in the system. Let's
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* go and set it up:
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*/
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- if (!skip_ioapic_setup && nr_ioapics)
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+ if (cpu_has_apic && !skip_ioapic_setup && nr_ioapics)
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setup_IO_APIC();
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#endif
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}
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