From b188c81f2e1a188ddda6a3d353e5b546c30a9b90 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sun, 16 Sep 2012 15:10:58 +0300 Subject: [PATCH] KVM: VMX: Make use of asm.h Use macros for bitness-insensitive register names, instead of rolling our own. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/vmx.c | 69 ++++++++++++++++++++-------------------------- 1 file changed, 30 insertions(+), 39 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 5faf12ace546..30bcb953afee 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6184,14 +6184,6 @@ static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx) msrs[i].host); } -#ifdef CONFIG_X86_64 -#define R "r" -#define Q "q" -#else -#define R "e" -#define Q "l" -#endif - static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); @@ -6240,30 +6232,30 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) vmx->__launched = vmx->loaded_vmcs->launched; asm( /* Store host registers */ - "push %%"R"dx; push %%"R"bp;" - "push %%"R"cx \n\t" /* placeholder for guest rcx */ - "push %%"R"cx \n\t" - "cmp %%"R"sp, %c[host_rsp](%0) \n\t" + "push %%" _ASM_DX "; push %%" _ASM_BP ";" + "push %%" _ASM_CX " \n\t" /* placeholder for guest rcx */ + "push %%" _ASM_CX " \n\t" + "cmp %%" _ASM_SP ", %c[host_rsp](%0) \n\t" "je 1f \n\t" - "mov %%"R"sp, %c[host_rsp](%0) \n\t" + "mov %%" _ASM_SP ", %c[host_rsp](%0) \n\t" __ex(ASM_VMX_VMWRITE_RSP_RDX) "\n\t" "1: \n\t" /* Reload cr2 if changed */ - "mov %c[cr2](%0), %%"R"ax \n\t" - "mov %%cr2, %%"R"dx \n\t" - "cmp %%"R"ax, %%"R"dx \n\t" + "mov %c[cr2](%0), %%" _ASM_AX " \n\t" + "mov %%cr2, %%" _ASM_DX " \n\t" + "cmp %%" _ASM_AX ", %%" _ASM_DX " \n\t" "je 2f \n\t" - "mov %%"R"ax, %%cr2 \n\t" + "mov %%" _ASM_AX", %%cr2 \n\t" "2: \n\t" /* Check if vmlaunch of vmresume is needed */ "cmpl $0, %c[launched](%0) \n\t" /* Load guest registers. Don't clobber flags. */ - "mov %c[rax](%0), %%"R"ax \n\t" - "mov %c[rbx](%0), %%"R"bx \n\t" - "mov %c[rdx](%0), %%"R"dx \n\t" - "mov %c[rsi](%0), %%"R"si \n\t" - "mov %c[rdi](%0), %%"R"di \n\t" - "mov %c[rbp](%0), %%"R"bp \n\t" + "mov %c[rax](%0), %%" _ASM_AX " \n\t" + "mov %c[rbx](%0), %%" _ASM_BX " \n\t" + "mov %c[rdx](%0), %%" _ASM_DX " \n\t" + "mov %c[rsi](%0), %%" _ASM_SI " \n\t" + "mov %c[rdi](%0), %%" _ASM_DI " \n\t" + "mov %c[rbp](%0), %%" _ASM_BP " \n\t" #ifdef CONFIG_X86_64 "mov %c[r8](%0), %%r8 \n\t" "mov %c[r9](%0), %%r9 \n\t" @@ -6274,7 +6266,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) "mov %c[r14](%0), %%r14 \n\t" "mov %c[r15](%0), %%r15 \n\t" #endif - "mov %c[rcx](%0), %%"R"cx \n\t" /* kills %0 (ecx) */ + "mov %c[rcx](%0), %%" _ASM_CX " \n\t" /* kills %0 (ecx) */ /* Enter guest mode */ "jne 1f \n\t" @@ -6283,15 +6275,15 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) "1: " __ex(ASM_VMX_VMRESUME) "\n\t" "2: " /* Save guest registers, load host registers, keep flags */ - "mov %0, %c[wordsize](%%"R"sp) \n\t" + "mov %0, %c[wordsize](%%" _ASM_SP ") \n\t" "pop %0 \n\t" - "mov %%"R"ax, %c[rax](%0) \n\t" - "mov %%"R"bx, %c[rbx](%0) \n\t" - "pop"Q" %c[rcx](%0) \n\t" - "mov %%"R"dx, %c[rdx](%0) \n\t" - "mov %%"R"si, %c[rsi](%0) \n\t" - "mov %%"R"di, %c[rdi](%0) \n\t" - "mov %%"R"bp, %c[rbp](%0) \n\t" + "mov %%" _ASM_AX ", %c[rax](%0) \n\t" + "mov %%" _ASM_BX ", %c[rbx](%0) \n\t" + __ASM_SIZE(pop) " %c[rcx](%0) \n\t" + "mov %%" _ASM_DX ", %c[rdx](%0) \n\t" + "mov %%" _ASM_SI ", %c[rsi](%0) \n\t" + "mov %%" _ASM_DI ", %c[rdi](%0) \n\t" + "mov %%" _ASM_BP ", %c[rbp](%0) \n\t" #ifdef CONFIG_X86_64 "mov %%r8, %c[r8](%0) \n\t" "mov %%r9, %c[r9](%0) \n\t" @@ -6302,10 +6294,10 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) "mov %%r14, %c[r14](%0) \n\t" "mov %%r15, %c[r15](%0) \n\t" #endif - "mov %%cr2, %%"R"ax \n\t" - "mov %%"R"ax, %c[cr2](%0) \n\t" + "mov %%cr2, %%" _ASM_AX " \n\t" + "mov %%" _ASM_AX ", %c[cr2](%0) \n\t" - "pop %%"R"bp; pop %%"R"dx \n\t" + "pop %%" _ASM_BP "; pop %%" _ASM_DX " \n\t" "setbe %c[fail](%0) \n\t" ".pushsection .rodata \n\t" ".global vmx_return \n\t" @@ -6335,9 +6327,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)), [wordsize]"i"(sizeof(ulong)) : "cc", "memory" - , R"ax", R"bx", R"di", R"si" #ifdef CONFIG_X86_64 + , "rax", "rbx", "rdi", "rsi" , "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" +#else + , "eax", "ebx", "edi", "esi" #endif ); @@ -6389,9 +6383,6 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) vmx_complete_interrupts(vmx); } -#undef R -#undef Q - static void vmx_free_vcpu(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu);