From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, Andi Kleen <ak@linux.intel.com>
Subject: [PATCH 2/3] KVM: VMX: Make use of asm.h
Date: Sun, 16 Sep 2012 15:10:58 +0300 [thread overview]
Message-ID: <1347797459-7183-3-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1347797459-7183-1-git-send-email-avi@redhat.com>
Use macros for bitness-insensitive register names, instead of
rolling our own.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
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 5faf12a..30bcb95 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);
--
1.7.12
next prev parent reply other threads:[~2012-09-16 12:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-16 12:10 [PATCH 0/3] Prepare kvm for lto Avi Kivity
2012-09-16 12:10 ` [PATCH 1/3] KVM: VMX: Make lto-friendly Avi Kivity
2012-09-16 12:10 ` Avi Kivity [this message]
2012-09-16 12:10 ` [PATCH 3/3] KVM: SVM: Make use of asm.h Avi Kivity
2012-09-17 13:38 ` [PATCH 0/3] Prepare kvm for lto Marcelo Tosatti
-- strict thread matches above, loose matches on Subject: below --
2012-09-12 14:50 Avi Kivity
2012-09-12 14:50 ` [PATCH 2/3] KVM: VMX: Make use of asm.h Avi Kivity
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