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qubes-linux-kernel/patches.arch/kvm-split-paravirt-ops-by-functionality
Joanna Rutkowska d1298d1dfb Keeps patches unpacked for easier history browsing
2010-07-07 13:12:45 +02:00

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From: Alexander Graf <agraf@suse.de>
Date: Wed, 18 Nov 2009 00:27:59 +0100
Subject: Split paravirt ops by functionality
References: bnc#556135, FATE#306453
Patch-Mainline: Submitted to virtualization list
Currently when using paravirt ops it's an all-or-nothing option. We can either
use pv-ops for CPU, MMU, timing, etc. or not at all.
Now there are some use cases where we don't need the full feature set, but only
a small chunk of it. KVM is a pretty prominent example for this.
So let's make everything a bit more fine-grained. We already have a splitting
by function groups, namely "cpu", "mmu", "time", "irq", "apic" and "spinlock".
Taking that existing splitting and extending it to only compile in the PV
capable bits sounded like a natural fit. That way we don't get performance hits
in MMU code from using the KVM PV clock which only needs the TIME parts of
pv-ops.
We define a new CONFIG_PARAVIRT_ALL option that basically does the same thing
the CONFIG_PARAVIRT did before this splitting. We move all users of
CONFIG_PARAVIRT to CONFIG_PARAVIRT_ALL, so they behave the same way they did
before.
So here it is - the splitting! I would have made the patch smaller, but this
was the closest I could get to atomic (for bisect) while staying sane.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
arch/x86/Kconfig | 47 +++++++++++++++++++++++++---
arch/x86/include/asm/apic.h | 2 -
arch/x86/include/asm/desc.h | 4 +-
arch/x86/include/asm/fixmap.h | 2 -
arch/x86/include/asm/io.h | 2 -
arch/x86/include/asm/irqflags.h | 21 +++++++++---
arch/x86/include/asm/mmu_context.h | 4 +-
arch/x86/include/asm/msr.h | 4 +-
arch/x86/include/asm/paravirt.h | 44 +++++++++++++++++++++++++-
arch/x86/include/asm/paravirt_types.h | 12 +++++++
arch/x86/include/asm/pgalloc.h | 2 -
arch/x86/include/asm/pgtable-3level_types.h | 2 -
arch/x86/include/asm/pgtable.h | 2 -
arch/x86/include/asm/processor.h | 2 -
arch/x86/include/asm/required-features.h | 2 -
arch/x86/include/asm/smp.h | 2 -
arch/x86/include/asm/system.h | 13 +++++--
arch/x86/include/asm/tlbflush.h | 4 +-
arch/x86/kernel/head_64.S | 2 -
arch/x86/kernel/paravirt.c | 2 +
arch/x86/kernel/tsc.c | 2 -
arch/x86/kernel/vsmp_64.c | 2 -
arch/x86/kernel/x8664_ksyms_64.c | 2 -
arch/x86/xen/Kconfig | 2 -
24 files changed, 146 insertions(+), 37 deletions(-)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -362,7 +362,7 @@ endif
config X86_VSMP
bool "ScaleMP vSMP"
- select PARAVIRT
+ select PARAVIRT_ALL
depends on X86_64 && PCI
depends on X86_EXTENDED_PLATFORM
---help---
@@ -510,7 +510,7 @@ source "arch/x86/xen/Kconfig"
config VMI
bool "VMI Guest support (DEPRECATED)"
- select PARAVIRT
+ select PARAVIRT_ALL
depends on X86_32
---help---
VMI provides a paravirtualized interface to the VMware ESX server
@@ -529,7 +529,6 @@ config VMI
config KVM_CLOCK
bool "KVM paravirtualized clock"
- select PARAVIRT
select PARAVIRT_CLOCK
---help---
Turning on this option will allow you to run a paravirtualized clock
@@ -540,7 +539,7 @@ config KVM_CLOCK
config KVM_GUEST
bool "KVM Guest support"
- select PARAVIRT
+ select PARAVIRT_ALL
---help---
This option enables various optimizations for running under the KVM
hypervisor.
@@ -568,8 +567,48 @@ config PARAVIRT_SPINLOCKS
If you are unsure how to answer this question, answer N.
+config PARAVIRT_CPU
+ bool
+ select PARAVIRT
+ default n
+
+config PARAVIRT_TIME
+ bool
+ select PARAVIRT
+ default n
+
+config PARAVIRT_IRQ
+ bool
+ select PARAVIRT
+ default n
+
+config PARAVIRT_APIC
+ bool
+ select PARAVIRT
+ default n
+
+config PARAVIRT_MMU
+ bool
+ select PARAVIRT
+ default n
+
+#
+# This is a placeholder to activate the old "include all pv-ops functionality"
+# behavior. If you're using this I'd recommend looking through your code to see
+# if you can be more specific. It probably saves you a few cycles!
+#
+config PARAVIRT_ALL
+ bool
+ select PARAVIRT_CPU
+ select PARAVIRT_TIME
+ select PARAVIRT_IRQ
+ select PARAVIRT_APIC
+ select PARAVIRT_MMU
+ default n
+
config PARAVIRT_CLOCK
bool
+ select PARAVIRT_TIME
default n
endif
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -81,7 +81,7 @@ static inline bool apic_from_smp_config(
/*
* Basic functions accessing APICs.
*/
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_APIC
#include <asm/paravirt.h>
#endif
--- a/arch/x86/include/asm/desc.h
+++ b/arch/x86/include/asm/desc.h
@@ -78,7 +78,7 @@ static inline int desc_empty(const void
return !(desc[0] | desc[1]);
}
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_CPU
#include <asm/paravirt.h>
#else
#define load_TR_desc() native_load_tr_desc()
@@ -108,7 +108,7 @@ static inline void paravirt_alloc_ldt(st
static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
{
}
-#endif /* CONFIG_PARAVIRT */
+#endif /* CONFIG_PARAVIRT_CPU */
#define store_ldt(ldt) asm("sldt %0" : "=m"(ldt))
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -162,7 +162,7 @@ void __native_set_fixmap(enum fixed_addr
void native_set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags);
-#ifndef CONFIG_PARAVIRT
+#ifndef CONFIG_PARAVIRT_MMU
static inline void __set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags)
{
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -268,7 +268,7 @@ extern void native_io_delay(void);
extern int io_delay_type;
extern void io_delay_init(void);
-#if defined(CONFIG_PARAVIRT)
+#if defined(CONFIG_PARAVIRT_CPU)
#include <asm/paravirt.h>
#else
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -58,9 +58,11 @@ static inline void native_halt(void)
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
-#else
+#endif
+
#ifndef __ASSEMBLY__
+#ifndef CONFIG_PARAVIRT_IRQ
static inline unsigned long __raw_local_save_flags(void)
{
return native_save_fl();
@@ -110,12 +112,17 @@ static inline unsigned long __raw_local_
return flags;
}
-#else
+#endif /* CONFIG_PARAVIRT_IRQ */
+
+#else /* __ASSEMBLY__ */
+#ifndef CONFIG_PARAVIRT_IRQ
#define ENABLE_INTERRUPTS(x) sti
#define DISABLE_INTERRUPTS(x) cli
+#endif /* !CONFIG_PARAVIRT_IRQ */
#ifdef CONFIG_X86_64
+#ifndef CONFIG_PARAVIRT_CPU
#define SWAPGS swapgs
/*
* Currently paravirt can't handle swapgs nicely when we
@@ -128,8 +135,6 @@ static inline unsigned long __raw_local_
*/
#define SWAPGS_UNSAFE_STACK swapgs
-#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */
-
#define INTERRUPT_RETURN iretq
#define USERGS_SYSRET64 \
swapgs; \
@@ -141,16 +146,22 @@ static inline unsigned long __raw_local_
swapgs; \
sti; \
sysexit
+#endif /* !CONFIG_PARAVIRT_CPU */
+
+#ifndef CONFIG_PARAVIRT_IRQ
+#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */
+#endif /* !CONFIG_PARAVIRT_IRQ */
#else
+#ifndef CONFIG_PARAVIRT_CPU
#define INTERRUPT_RETURN iret
#define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit
#define GET_CR0_INTO_EAX movl %cr0, %eax
+#endif /* !CONFIG_PARAVIRT_CPU */
#endif
#endif /* __ASSEMBLY__ */
-#endif /* CONFIG_PARAVIRT */
#ifndef __ASSEMBLY__
#define raw_local_save_flags(flags) \
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -6,14 +6,14 @@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/paravirt.h>
-#ifndef CONFIG_PARAVIRT
+#ifndef CONFIG_PARAVIRT_MMU
#include <asm-generic/mm_hooks.h>
static inline void paravirt_activate_mm(struct mm_struct *prev,
struct mm_struct *next)
{
}
-#endif /* !CONFIG_PARAVIRT */
+#endif /* !CONFIG_PARAVIRT_MMU */
/*
* Used for LDT copy/destruction.
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -135,7 +135,7 @@ static inline unsigned long long native_
return EAX_EDX_VAL(val, low, high);
}
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_CPU
#include <asm/paravirt.h>
#else
#include <linux/errno.h>
@@ -246,7 +246,7 @@ do {
#define rdtscpll(val, aux) (val) = native_read_tscp(&(aux))
-#endif /* !CONFIG_PARAVIRT */
+#endif /* !CONFIG_PARAVIRT_CPU */
#define checking_wrmsrl(msr, val) wrmsr_safe((msr), (u32)(val), \
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -18,6 +18,7 @@ static inline int paravirt_enabled(void)
return pv_info.paravirt_enabled;
}
+#ifdef CONFIG_PARAVIRT_CPU
static inline void load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{
@@ -58,7 +59,9 @@ static inline void write_cr0(unsigned lo
{
PVOP_VCALL1(pv_cpu_ops.write_cr0, x);
}
+#endif /* CONFIG_PARAVIRT_CPU */
+#ifdef CONFIG_PARAVIRT_MMU
static inline unsigned long read_cr2(void)
{
return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr2);
@@ -78,7 +81,9 @@ static inline void write_cr3(unsigned lo
{
PVOP_VCALL1(pv_mmu_ops.write_cr3, x);
}
+#endif /* CONFIG_PARAVIRT_MMU */
+#ifdef CONFIG_PARAVIRT_CPU
static inline unsigned long read_cr4(void)
{
return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4);
@@ -92,8 +97,9 @@ static inline void write_cr4(unsigned lo
{
PVOP_VCALL1(pv_cpu_ops.write_cr4, x);
}
+#endif /* CONFIG_PARAVIRT_CPU */
-#ifdef CONFIG_X86_64
+#if defined(CONFIG_X86_64) && defined(CONFIG_PARAVIRT_CPU)
static inline unsigned long read_cr8(void)
{
return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr8);
@@ -105,6 +111,7 @@ static inline void write_cr8(unsigned lo
}
#endif
+#ifdef CONFIG_PARAVIRT_IRQ
static inline void raw_safe_halt(void)
{
PVOP_VCALL0(pv_irq_ops.safe_halt);
@@ -114,14 +121,18 @@ static inline void halt(void)
{
PVOP_VCALL0(pv_irq_ops.safe_halt);
}
+#endif /* CONFIG_PARAVIRT_IRQ */
+#ifdef CONFIG_PARAVIRT_CPU
static inline void wbinvd(void)
{
PVOP_VCALL0(pv_cpu_ops.wbinvd);
}
+#endif
#define get_kernel_rpl() (pv_info.kernel_rpl)
+#ifdef CONFIG_PARAVIRT_CPU
static inline u64 paravirt_read_msr(unsigned msr, int *err)
{
return PVOP_CALL2(u64, pv_cpu_ops.read_msr, msr, err);
@@ -224,12 +235,16 @@ do { \
} while (0)
#define rdtscll(val) (val = paravirt_read_tsc())
+#endif /* CONFIG_PARAVIRT_CPU */
+#ifdef CONFIG_PARAVIRT_TIME
static inline unsigned long long paravirt_sched_clock(void)
{
return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
}
+#endif /* CONFIG_PARAVIRT_TIME */
+#ifdef CONFIG_PARAVIRT_CPU
static inline unsigned long long paravirt_read_pmc(int counter)
{
return PVOP_CALL1(u64, pv_cpu_ops.read_pmc, counter);
@@ -345,8 +360,9 @@ static inline void slow_down_io(void)
pv_cpu_ops.io_delay();
#endif
}
+#endif /* CONFIG_PARAVIRT_CPU */
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_APIC)
static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
unsigned long start_esp)
{
@@ -355,6 +371,7 @@ static inline void startup_ipi_hook(int
}
#endif
+#ifdef CONFIG_PARAVIRT_MMU
static inline void paravirt_activate_mm(struct mm_struct *prev,
struct mm_struct *next)
{
@@ -689,7 +706,9 @@ static inline void pmd_clear(pmd_t *pmdp
set_pmd(pmdp, __pmd(0));
}
#endif /* CONFIG_X86_PAE */
+#endif /* CONFIG_PARAVIRT_MMU */
+#ifdef CONFIG_PARAVIRT_CPU
#define __HAVE_ARCH_START_CONTEXT_SWITCH
static inline void arch_start_context_switch(struct task_struct *prev)
{
@@ -700,7 +719,9 @@ static inline void arch_end_context_swit
{
PVOP_VCALL1(pv_cpu_ops.end_context_switch, next);
}
+#endif /* CONFIG_PARAVIRT_CPU */
+#ifdef CONFIG_PARAVIRT_MMU
#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
static inline void arch_enter_lazy_mmu_mode(void)
{
@@ -719,6 +740,7 @@ static inline void __set_fixmap(unsigned
{
pv_mmu_ops.set_fixmap(idx, phys, flags);
}
+#endif /* CONFIG_PARAVIRT_MMU */
#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
@@ -829,6 +851,7 @@ static __always_inline void arch_spin_un
#define __PV_IS_CALLEE_SAVE(func) \
((struct paravirt_callee_save) { func })
+#ifdef CONFIG_PARAVIRT_IRQ
static inline unsigned long __raw_local_save_flags(void)
{
return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl);
@@ -857,6 +880,7 @@ static inline unsigned long __raw_local_
raw_local_irq_disable();
return f;
}
+#endif /* CONFIG_PARAVIRT_IRQ */
/* Make sure as little as possible of this mess escapes. */
@@ -939,10 +963,13 @@ extern void default_banner(void);
#define PARA_INDIRECT(addr) *%cs:addr
#endif
+#ifdef CONFIG_PARAVIRT_CPU
#define INTERRUPT_RETURN \
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), CLBR_NONE, \
jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_iret))
+#endif /* CONFIG_PARAVIRT_CPU */
+#ifdef CONFIG_PARAVIRT_IRQ
#define DISABLE_INTERRUPTS(clobbers) \
PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_disable), clobbers, \
PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
@@ -954,13 +981,17 @@ extern void default_banner(void);
PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_enable); \
PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
+#endif /* CONFIG_PARAVIRT_IRQ */
+#ifdef CONFIG_PARAVIRT_CPU
#define USERGS_SYSRET32 \
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret32), \
CLBR_NONE, \
jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret32))
+#endif /* CONFIG_PARAVIRT_CPU */
#ifdef CONFIG_X86_32
+#ifdef CONFIG_PARAVIRT_CPU
#define GET_CR0_INTO_EAX \
push %ecx; push %edx; \
call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \
@@ -970,10 +1001,12 @@ extern void default_banner(void);
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \
CLBR_NONE, \
jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
+#endif /* CONFIG_PARAVIRT_CPU */
#else /* !CONFIG_X86_32 */
+#ifdef CONFIG_PARAVIRT_CPU
/*
* If swapgs is used while the userspace stack is still current,
* there's no way to call a pvop. The PV replacement *must* be
@@ -993,17 +1026,23 @@ extern void default_banner(void);
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE, \
call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs) \
)
+#endif /* CONFIG_PARAVIRT_CPU */
+#ifdef CONFIG_PARAVIRT_MMU
#define GET_CR2_INTO_RCX \
call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2); \
movq %rax, %rcx; \
xorq %rax, %rax;
+#endif /* CONFIG_PARAVIRT_MMU */
+#ifdef CONFIG_PARAVIRT_IRQ
#define PARAVIRT_ADJUST_EXCEPTION_FRAME \
PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_adjust_exception_frame), \
CLBR_NONE, \
call PARA_INDIRECT(pv_irq_ops+PV_IRQ_adjust_exception_frame))
+#endif /* CONFIG_PARAVIRT_IRQ */
+#ifdef CONFIG_PARAVIRT_CPU
#define USERGS_SYSRET64 \
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret64), \
CLBR_NONE, \
@@ -1013,6 +1052,7 @@ extern void default_banner(void);
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \
CLBR_NONE, \
jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
+#endif /* CONFIG_PARAVIRT_CPU */
#endif /* CONFIG_X86_32 */
#endif /* __ASSEMBLY__ */
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -339,12 +339,24 @@ struct paravirt_patch_template {
extern struct pv_info pv_info;
extern struct pv_init_ops pv_init_ops;
+#ifdef CONFIG_PARAVIRT_TIME
extern struct pv_time_ops pv_time_ops;
+#endif
+#ifdef CONFIG_PARAVIRT_CPU
extern struct pv_cpu_ops pv_cpu_ops;
+#endif
+#ifdef CONFIG_PARAVIRT_IRQ
extern struct pv_irq_ops pv_irq_ops;
+#endif
+#ifdef CONFIG_PARAVIRT_APIC
extern struct pv_apic_ops pv_apic_ops;
+#endif
+#ifdef CONFIG_PARAVIRT_MMU
extern struct pv_mmu_ops pv_mmu_ops;
+#endif
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
extern struct pv_lock_ops pv_lock_ops;
+#endif
#define PARAVIRT_PATCH(x) \
(offsetof(struct paravirt_patch_template, x) / sizeof(void *))
--- a/arch/x86/include/asm/pgalloc.h
+++ b/arch/x86/include/asm/pgalloc.h
@@ -7,7 +7,7 @@
static inline int __paravirt_pgd_alloc(struct mm_struct *mm) { return 0; }
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_MMU
#include <asm/paravirt.h>
#else
#define paravirt_pgd_alloc(mm) __paravirt_pgd_alloc(mm)
--- a/arch/x86/include/asm/pgtable-3level_types.h
+++ b/arch/x86/include/asm/pgtable-3level_types.h
@@ -18,7 +18,7 @@ typedef union {
} pte_t;
#endif /* !__ASSEMBLY__ */
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_MMU
#define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd)
#else
#define SHARED_KERNEL_PMD 1
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -28,7 +28,7 @@ extern unsigned long empty_zero_page[PAG
extern spinlock_t pgd_lock;
extern struct list_head pgd_list;
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_MMU
#include <asm/paravirt.h>
#else /* !CONFIG_PARAVIRT */
#define set_pte(ptep, pte) native_set_pte(ptep, pte)
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -573,7 +573,7 @@ static inline void native_swapgs(void)
#endif
}
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_CPU
#include <asm/paravirt.h>
#else
#define __cpuid native_cpuid
--- a/arch/x86/include/asm/required-features.h
+++ b/arch/x86/include/asm/required-features.h
@@ -48,7 +48,7 @@
#endif
#ifdef CONFIG_X86_64
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_MMU
/* Paravirtualized systems may not have PSE or PGE available */
#define NEED_PSE 0
#define NEED_PGE 0
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -66,7 +66,7 @@ struct smp_ops {
extern void set_cpu_sibling_map(int cpu);
#ifdef CONFIG_SMP
-#ifndef CONFIG_PARAVIRT
+#ifndef CONFIG_PARAVIRT_APIC
#define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
#endif
extern struct smp_ops smp_ops;
--- a/arch/x86/include/asm/system.h
+++ b/arch/x86/include/asm/system.h
@@ -304,13 +304,18 @@ static inline void native_wbinvd(void)
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
-#else
-#define read_cr0() (native_read_cr0())
-#define write_cr0(x) (native_write_cr0(x))
+#endif/* CONFIG_PARAVIRT */
+
+#ifndef CONFIG_PARAVIRT_MMU
#define read_cr2() (native_read_cr2())
#define write_cr2(x) (native_write_cr2(x))
#define read_cr3() (native_read_cr3())
#define write_cr3(x) (native_write_cr3(x))
+#endif /* CONFIG_PARAVIRT_MMU */
+
+#ifndef CONFIG_PARAVIRT_CPU
+#define read_cr0() (native_read_cr0())
+#define write_cr0(x) (native_write_cr0(x))
#define read_cr4() (native_read_cr4())
#define read_cr4_safe() (native_read_cr4_safe())
#define write_cr4(x) (native_write_cr4(x))
@@ -324,7 +329,7 @@ static inline void native_wbinvd(void)
/* Clear the 'TS' bit */
#define clts() (native_clts())
-#endif/* CONFIG_PARAVIRT */
+#endif /* CONFIG_PARAVIRT_CPU */
#define stts() write_cr0(read_cr0() | X86_CR0_TS)
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -7,7 +7,7 @@
#include <asm/processor.h>
#include <asm/system.h>
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_MMU
#include <asm/paravirt.h>
#else
#define __flush_tlb() __native_flush_tlb()
@@ -162,7 +162,7 @@ static inline void reset_lazy_tlbstate(v
#endif /* SMP */
-#ifndef CONFIG_PARAVIRT
+#ifndef CONFIG_PARAVIRT_MMU
#define flush_tlb_others(mask, mm, va) native_flush_tlb_others(mask, mm, va)
#endif
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -20,7 +20,7 @@
#include <asm/processor-flags.h>
#include <asm/percpu.h>
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_MMU
#include <asm/asm-offsets.h>
#include <asm/paravirt.h>
#else
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -155,12 +155,14 @@ unsigned paravirt_patch_default(u8 type,
else if (opfunc == _paravirt_ident_64)
ret = paravirt_patch_ident_64(insnbuf, len);
+#ifdef CONFIG_PARAVIRT_CPU
else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) ||
type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret32) ||
type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret64))
/* If operation requires a jmp, then jmp */
ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
+#endif
else
/* Otherwise call the function; assume target could
clobber any caller-save reg */
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -66,7 +66,7 @@ u64 native_sched_clock(void)
/* We need to define a real function for sched_clock, to override the
weak default version */
-#ifdef CONFIG_PARAVIRT
+#ifdef CONFIG_PARAVIRT_TIME
unsigned long long sched_clock(void)
{
return paravirt_sched_clock();
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -22,7 +22,7 @@
#include <asm/paravirt.h>
#include <asm/setup.h>
-#if defined CONFIG_PCI && defined CONFIG_PARAVIRT
+#if defined CONFIG_PCI && defined CONFIG_PARAVIRT_IRQ
/*
* Interrupt control on vSMPowered systems:
* ~AC is a shadow of IF. If IF is 'on' AC should be 'off'
--- a/arch/x86/kernel/x8664_ksyms_64.c
+++ b/arch/x86/kernel/x8664_ksyms_64.c
@@ -55,6 +55,6 @@ EXPORT_SYMBOL(__memcpy);
EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(init_level4_pgt);
-#ifndef CONFIG_PARAVIRT
+#ifndef CONFIG_PARAVIRT_CPU
EXPORT_SYMBOL(native_load_gs_index);
#endif
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -4,7 +4,7 @@
config XEN
bool "Xen guest support"
- select PARAVIRT
+ select PARAVIRT_ALL
select PARAVIRT_CLOCK
depends on X86_64 || (X86_32 && X86_PAE && !X86_VISWS)
depends on X86_CMPXCHG && X86_TSC
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