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KVM: VMX: Consolidate register usage in vmx_vcpu_run()

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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@qumranet.com>
This commit is contained in:
Avi Kivity 2007-11-15 18:06:18 +02:00
parent 018d00d2fe
commit e08aa78ae5
1 changed files with 73 additions and 73 deletions
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146
drivers/kvm/vmx.c
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@ -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"