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Message-Id: <1198667160-22953-55-git-send-email-avi@qumranet.com> Date: Wed, 26 Dec 2007 13:05:59 +0200 From: Avi Kivity <avi@...ranet.com> To: linux-kernel@...r.kernel.org, kvm-devel@...ts.sourceforge.net Subject: [PATCH 54/55] KVM: VMX: Consolidate register usage in vmx_vcpu_run() We pass vcpu, vmx->fail, and vmx->launched to assembly code, but all three are fields within vmx. Consolidate by only passing in vmx and offsets for the rest. Signed-off-by: Avi Kivity <avi@...ranet.com> --- drivers/kvm/vmx.c | 146 ++++++++++++++++++++++++++-------------------------- 1 files changed, 73 insertions(+), 73 deletions(-) diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 18fd918..30220ea 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -2350,36 +2350,36 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) #endif ASM_VMX_VMWRITE_RSP_RDX "\n\t" /* Check if vmlaunch of vmresume is needed */ - "cmp $0, %1 \n\t" + "cmpl $0, %c[launched](%0) \n\t" /* Load guest registers. Don't clobber flags. */ #ifdef CONFIG_X86_64 - "mov %c[cr2](%3), %%rax \n\t" + "mov %c[cr2](%0), %%rax \n\t" "mov %%rax, %%cr2 \n\t" - "mov %c[rax](%3), %%rax \n\t" - "mov %c[rbx](%3), %%rbx \n\t" - "mov %c[rdx](%3), %%rdx \n\t" - "mov %c[rsi](%3), %%rsi \n\t" - "mov %c[rdi](%3), %%rdi \n\t" - "mov %c[rbp](%3), %%rbp \n\t" - "mov %c[r8](%3), %%r8 \n\t" - "mov %c[r9](%3), %%r9 \n\t" - "mov %c[r10](%3), %%r10 \n\t" - "mov %c[r11](%3), %%r11 \n\t" - "mov %c[r12](%3), %%r12 \n\t" - "mov %c[r13](%3), %%r13 \n\t" - "mov %c[r14](%3), %%r14 \n\t" - "mov %c[r15](%3), %%r15 \n\t" - "mov %c[rcx](%3), %%rcx \n\t" /* kills %3 (rcx) */ + "mov %c[rax](%0), %%rax \n\t" + "mov %c[rbx](%0), %%rbx \n\t" + "mov %c[rdx](%0), %%rdx \n\t" + "mov %c[rsi](%0), %%rsi \n\t" + "mov %c[rdi](%0), %%rdi \n\t" + "mov %c[rbp](%0), %%rbp \n\t" + "mov %c[r8](%0), %%r8 \n\t" + "mov %c[r9](%0), %%r9 \n\t" + "mov %c[r10](%0), %%r10 \n\t" + "mov %c[r11](%0), %%r11 \n\t" + "mov %c[r12](%0), %%r12 \n\t" + "mov %c[r13](%0), %%r13 \n\t" + "mov %c[r14](%0), %%r14 \n\t" + "mov %c[r15](%0), %%r15 \n\t" + "mov %c[rcx](%0), %%rcx \n\t" /* kills %0 (rcx) */ #else - "mov %c[cr2](%3), %%eax \n\t" + "mov %c[cr2](%0), %%eax \n\t" "mov %%eax, %%cr2 \n\t" - "mov %c[rax](%3), %%eax \n\t" - "mov %c[rbx](%3), %%ebx \n\t" - "mov %c[rdx](%3), %%edx \n\t" - "mov %c[rsi](%3), %%esi \n\t" - "mov %c[rdi](%3), %%edi \n\t" - "mov %c[rbp](%3), %%ebp \n\t" - "mov %c[rcx](%3), %%ecx \n\t" /* kills %3 (ecx) */ + "mov %c[rax](%0), %%eax \n\t" + "mov %c[rbx](%0), %%ebx \n\t" + "mov %c[rdx](%0), %%edx \n\t" + "mov %c[rsi](%0), %%esi \n\t" + "mov %c[rdi](%0), %%edi \n\t" + "mov %c[rbp](%0), %%ebp \n\t" + "mov %c[rcx](%0), %%ecx \n\t" /* kills %0 (ecx) */ #endif /* Enter guest mode */ "jne .Llaunched \n\t" @@ -2389,62 +2389,62 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) ".Lkvm_vmx_return: " /* Save guest registers, load host registers, keep flags */ #ifdef CONFIG_X86_64 - "xchg %3, (%%rsp) \n\t" - "mov %%rax, %c[rax](%3) \n\t" - "mov %%rbx, %c[rbx](%3) \n\t" - "pushq (%%rsp); popq %c[rcx](%3) \n\t" - "mov %%rdx, %c[rdx](%3) \n\t" - "mov %%rsi, %c[rsi](%3) \n\t" - "mov %%rdi, %c[rdi](%3) \n\t" - "mov %%rbp, %c[rbp](%3) \n\t" - "mov %%r8, %c[r8](%3) \n\t" - "mov %%r9, %c[r9](%3) \n\t" - "mov %%r10, %c[r10](%3) \n\t" - "mov %%r11, %c[r11](%3) \n\t" - "mov %%r12, %c[r12](%3) \n\t" - "mov %%r13, %c[r13](%3) \n\t" - "mov %%r14, %c[r14](%3) \n\t" - "mov %%r15, %c[r15](%3) \n\t" + "xchg %0, (%%rsp) \n\t" + "mov %%rax, %c[rax](%0) \n\t" + "mov %%rbx, %c[rbx](%0) \n\t" + "pushq (%%rsp); popq %c[rcx](%0) \n\t" + "mov %%rdx, %c[rdx](%0) \n\t" + "mov %%rsi, %c[rsi](%0) \n\t" + "mov %%rdi, %c[rdi](%0) \n\t" + "mov %%rbp, %c[rbp](%0) \n\t" + "mov %%r8, %c[r8](%0) \n\t" + "mov %%r9, %c[r9](%0) \n\t" + "mov %%r10, %c[r10](%0) \n\t" + "mov %%r11, %c[r11](%0) \n\t" + "mov %%r12, %c[r12](%0) \n\t" + "mov %%r13, %c[r13](%0) \n\t" + "mov %%r14, %c[r14](%0) \n\t" + "mov %%r15, %c[r15](%0) \n\t" "mov %%cr2, %%rax \n\t" - "mov %%rax, %c[cr2](%3) \n\t" + "mov %%rax, %c[cr2](%0) \n\t" - "pop %%rcx; pop %%rbp; pop %%rdx \n\t" + "pop %%rbp; pop %%rbp; pop %%rdx \n\t" #else - "xchg %3, (%%esp) \n\t" - "mov %%eax, %c[rax](%3) \n\t" - "mov %%ebx, %c[rbx](%3) \n\t" - "pushl (%%esp); popl %c[rcx](%3) \n\t" - "mov %%edx, %c[rdx](%3) \n\t" - "mov %%esi, %c[rsi](%3) \n\t" - "mov %%edi, %c[rdi](%3) \n\t" - "mov %%ebp, %c[rbp](%3) \n\t" + "xchg %0, (%%esp) \n\t" + "mov %%eax, %c[rax](%0) \n\t" + "mov %%ebx, %c[rbx](%0) \n\t" + "pushl (%%esp); popl %c[rcx](%0) \n\t" + "mov %%edx, %c[rdx](%0) \n\t" + "mov %%esi, %c[rsi](%0) \n\t" + "mov %%edi, %c[rdi](%0) \n\t" + "mov %%ebp, %c[rbp](%0) \n\t" "mov %%cr2, %%eax \n\t" - "mov %%eax, %c[cr2](%3) \n\t" + "mov %%eax, %c[cr2](%0) \n\t" - "pop %%ecx; pop %%ebp; pop %%edx \n\t" + "pop %%ebp; pop %%ebp; pop %%edx \n\t" #endif - "setbe %0 \n\t" - : "=q" (vmx->fail) - : "r"(vmx->launched), "d"((unsigned long)HOST_RSP), - "c"(vcpu), - [rax]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RAX])), - [rbx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBX])), - [rcx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RCX])), - [rdx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RDX])), - [rsi]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RSI])), - [rdi]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RDI])), - [rbp]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBP])), + "setbe %c[fail](%0) \n\t" + : : "c"(vmx), "d"((unsigned long)HOST_RSP), + [launched]"i"(offsetof(struct vcpu_vmx, launched)), + [fail]"i"(offsetof(struct vcpu_vmx, fail)), + [rax]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RAX])), + [rbx]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RBX])), + [rcx]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RCX])), + [rdx]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RDX])), + [rsi]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RSI])), + [rdi]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RDI])), + [rbp]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_RBP])), #ifdef CONFIG_X86_64 - [r8]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R8])), - [r9]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R9])), - [r10]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R10])), - [r11]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R11])), - [r12]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R12])), - [r13]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R13])), - [r14]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R14])), - [r15]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R15])), + [r8]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R8])), + [r9]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R9])), + [r10]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R10])), + [r11]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R11])), + [r12]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R12])), + [r13]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R13])), + [r14]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R14])), + [r15]"i"(offsetof(struct vcpu_vmx, vcpu.regs[VCPU_REGS_R15])), #endif - [cr2]"i"(offsetof(struct kvm_vcpu, cr2)) + [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.cr2)) : "cc", "memory" #ifdef CONFIG_X86_64 , "rbx", "rdi", "rsi" -- 1.5.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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