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Commit 7454766f authored by Avi Kivity's avatar Avi Kivity Committed by Marcelo Tosatti
Browse files

KVM: SVM: Make use of asm.h 



Use macros for bitness-insensitive register names, instead of
rolling our own.

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent b188c81f

arch/x86/kvm/svm.c

+20 −26
Original line number Diff line number Diff line
@@ -3782,12 +3782,6 @@ static void svm_cancel_injection(struct kvm_vcpu *vcpu) 
	svm_complete_interrupts(svm);

}



#ifdef CONFIG_X86_64

#define R "r"

#else

#define R "e"

#endif



static void svm_vcpu_run(struct kvm_vcpu *vcpu)

{

	struct vcpu_svm *svm = to_svm(vcpu);
@@ -3814,13 +3808,13 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) 
	local_irq_enable();



	asm volatile (

		"push %%"R"bp; \n\t"

		"mov %c[rbx](%[svm]), %%"R"bx \n\t"

		"mov %c[rcx](%[svm]), %%"R"cx \n\t"

		"mov %c[rdx](%[svm]), %%"R"dx \n\t"

		"mov %c[rsi](%[svm]), %%"R"si \n\t"

		"mov %c[rdi](%[svm]), %%"R"di \n\t"

		"mov %c[rbp](%[svm]), %%"R"bp \n\t"

		"push %%" _ASM_BP "; \n\t"

		"mov %c[rbx](%[svm]), %%" _ASM_BX " \n\t"

		"mov %c[rcx](%[svm]), %%" _ASM_CX " \n\t"

		"mov %c[rdx](%[svm]), %%" _ASM_DX " \n\t"

		"mov %c[rsi](%[svm]), %%" _ASM_SI " \n\t"

		"mov %c[rdi](%[svm]), %%" _ASM_DI " \n\t"

		"mov %c[rbp](%[svm]), %%" _ASM_BP " \n\t"

#ifdef CONFIG_X86_64

		"mov %c[r8](%[svm]),  %%r8  \n\t"

		"mov %c[r9](%[svm]),  %%r9  \n\t"
@@ -3833,20 +3827,20 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) 
#endif



		/* Enter guest mode */

		"push %%"R"ax \n\t"

		"mov %c[vmcb](%[svm]), %%"R"ax \n\t"

		"push %%" _ASM_AX " \n\t"

		"mov %c[vmcb](%[svm]), %%" _ASM_AX " \n\t"

		__ex(SVM_VMLOAD) "\n\t"

		__ex(SVM_VMRUN) "\n\t"

		__ex(SVM_VMSAVE) "\n\t"

		"pop %%"R"ax \n\t"

		"pop %%" _ASM_AX " \n\t"



		/* Save guest registers, load host registers */

		"mov %%"R"bx, %c[rbx](%[svm]) \n\t"

		"mov %%"R"cx, %c[rcx](%[svm]) \n\t"

		"mov %%"R"dx, %c[rdx](%[svm]) \n\t"

		"mov %%"R"si, %c[rsi](%[svm]) \n\t"

		"mov %%"R"di, %c[rdi](%[svm]) \n\t"

		"mov %%"R"bp, %c[rbp](%[svm]) \n\t"

		"mov %%" _ASM_BX ", %c[rbx](%[svm]) \n\t"

		"mov %%" _ASM_CX ", %c[rcx](%[svm]) \n\t"

		"mov %%" _ASM_DX ", %c[rdx](%[svm]) \n\t"

		"mov %%" _ASM_SI ", %c[rsi](%[svm]) \n\t"

		"mov %%" _ASM_DI ", %c[rdi](%[svm]) \n\t"

		"mov %%" _ASM_BP ", %c[rbp](%[svm]) \n\t"

#ifdef CONFIG_X86_64

		"mov %%r8,  %c[r8](%[svm]) \n\t"

		"mov %%r9,  %c[r9](%[svm]) \n\t"
@@ -3857,7 +3851,7 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) 
		"mov %%r14, %c[r14](%[svm]) \n\t"

		"mov %%r15, %c[r15](%[svm]) \n\t"

#endif

		"pop %%"R"bp"

		"pop %%" _ASM_BP

		:

		: [svm]"a"(svm),

		  [vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)),
@@ -3878,9 +3872,11 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) 
		  [r15]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R15]))

#endif

		: "cc", "memory"

		, R"bx", R"cx", R"dx", R"si", R"di"

#ifdef CONFIG_X86_64

		, "rbx", "rcx", "rdx", "rsi", "rdi"

		, "r8", "r9", "r10", "r11" , "r12", "r13", "r14", "r15"

#else

		, "ebx", "ecx", "edx", "esi", "edi"

#endif

		);
@@ -3940,8 +3936,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) 
	mark_all_clean(svm->vmcb);

}



#undef R



static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)

{

	struct vcpu_svm *svm = to_svm(vcpu);