diff options
| -rw-r--r-- | arch/x86/include/asm/paravirt_types.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/paravirt.c | 26 | ||||
| -rw-r--r-- | arch/x86/kernel/paravirt_patch_32.c | 18 | ||||
| -rw-r--r-- | arch/x86/kernel/paravirt_patch_64.c | 20 |
4 files changed, 19 insertions, 47 deletions
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index fba54ca23b2a..26942ad63830 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -361,7 +361,6 @@ extern struct paravirt_patch_template pv_ops; __visible extern const char start_##ops##_##name[], end_##ops##_##name[]; \ asm(NATIVE_LABEL("start_", ops, name) code NATIVE_LABEL("end_", ops, name)) -unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len); unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len); unsigned paravirt_patch_default(u8 type, void *insnbuf, unsigned long addr, unsigned len); @@ -651,7 +650,6 @@ void paravirt_leave_lazy_mmu(void); void paravirt_flush_lazy_mmu(void); void _paravirt_nop(void); -u32 _paravirt_ident_32(u32); u64 _paravirt_ident_64(u64); #define paravirt_nop ((void *)_paravirt_nop) diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 45123b116c05..c0e0101133f3 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -56,17 +56,6 @@ asm (".pushsection .entry.text, \"ax\"\n" ".type _paravirt_nop, @function\n\t" ".popsection"); -/* identity function, which can be inlined */ -u32 notrace _paravirt_ident_32(u32 x) -{ - return x; -} - -u64 notrace _paravirt_ident_64(u64 x) -{ - return x; -} - void __init default_banner(void) { printk(KERN_INFO "Booting paravirtualized kernel on %s\n", @@ -102,6 +91,12 @@ static unsigned paravirt_patch_call(void *insnbuf, const void *target, } #ifdef CONFIG_PARAVIRT_XXL +/* identity function, which can be inlined */ +u64 notrace _paravirt_ident_64(u64 x) +{ + return x; +} + static unsigned paravirt_patch_jmp(void *insnbuf, const void *target, unsigned long addr, unsigned len) { @@ -146,13 +141,11 @@ unsigned paravirt_patch_default(u8 type, void *insnbuf, else if (opfunc == _paravirt_nop) ret = 0; +#ifdef CONFIG_PARAVIRT_XXL /* identity functions just return their single argument */ - else if (opfunc == _paravirt_ident_32) - ret = paravirt_patch_ident_32(insnbuf, len); else if (opfunc == _paravirt_ident_64) ret = paravirt_patch_ident_64(insnbuf, len); -#ifdef CONFIG_PARAVIRT_XXL else if (type == PARAVIRT_PATCH(cpu.iret) || type == PARAVIRT_PATCH(cpu.usergs_sysret64)) /* If operation requires a jmp, then jmp */ @@ -309,13 +302,8 @@ struct pv_info pv_info = { #endif }; -#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE) -/* 32-bit pagetable entries */ -#define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32) -#else /* 64-bit pagetable entries */ #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) -#endif struct paravirt_patch_template pv_ops = { /* Init ops. */ diff --git a/arch/x86/kernel/paravirt_patch_32.c b/arch/x86/kernel/paravirt_patch_32.c index 6368c22fa1fa..de138d3912e4 100644 --- a/arch/x86/kernel/paravirt_patch_32.c +++ b/arch/x86/kernel/paravirt_patch_32.c @@ -10,24 +10,18 @@ DEF_NATIVE(cpu, iret, "iret"); DEF_NATIVE(mmu, read_cr2, "mov %cr2, %eax"); DEF_NATIVE(mmu, write_cr3, "mov %eax, %cr3"); DEF_NATIVE(mmu, read_cr3, "mov %cr3, %eax"); -#endif - -#if defined(CONFIG_PARAVIRT_SPINLOCKS) -DEF_NATIVE(lock, queued_spin_unlock, "movb $0, (%eax)"); -DEF_NATIVE(lock, vcpu_is_preempted, "xor %eax, %eax"); -#endif - -unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len) -{ - /* arg in %eax, return in %eax */ - return 0; -} unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len) { /* arg in %edx:%eax, return in %edx:%eax */ return 0; } +#endif + +#if defined(CONFIG_PARAVIRT_SPINLOCKS) +DEF_NATIVE(lock, queued_spin_unlock, "movb $0, (%eax)"); +DEF_NATIVE(lock, vcpu_is_preempted, "xor %eax, %eax"); +#endif extern bool pv_is_native_spin_unlock(void); extern bool pv_is_native_vcpu_is_preempted(void); diff --git a/arch/x86/kernel/paravirt_patch_64.c b/arch/x86/kernel/paravirt_patch_64.c index 7ca9cb726f4d..9d9e04b31077 100644 --- a/arch/x86/kernel/paravirt_patch_64.c +++ b/arch/x86/kernel/paravirt_patch_64.c @@ -15,27 +15,19 @@ DEF_NATIVE(cpu, wbinvd, "wbinvd"); DEF_NATIVE(cpu, usergs_sysret64, "swapgs; sysretq"); DEF_NATIVE(cpu, swapgs, "swapgs"); -#endif - -DEF_NATIVE(, mov32, "mov %edi, %eax"); DEF_NATIVE(, mov64, "mov %rdi, %rax"); -#if defined(CONFIG_PARAVIRT_SPINLOCKS) -DEF_NATIVE(lock, queued_spin_unlock, "movb $0, (%rdi)"); -DEF_NATIVE(lock, vcpu_is_preempted, "xor %eax, %eax"); -#endif - -unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len) -{ - return paravirt_patch_insns(insnbuf, len, - start__mov32, end__mov32); -} - unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len) { return paravirt_patch_insns(insnbuf, len, start__mov64, end__mov64); } +#endif + +#if defined(CONFIG_PARAVIRT_SPINLOCKS) +DEF_NATIVE(lock, queued_spin_unlock, "movb $0, (%rdi)"); +DEF_NATIVE(lock, vcpu_is_preempted, "xor %eax, %eax"); +#endif extern bool pv_is_native_spin_unlock(void); extern bool pv_is_native_vcpu_is_preempted(void); |