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| author | Uros Bizjak <ubizjak@gmail.com> | 2018-11-26 19:00:08 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-12-21 13:28:44 +0300 |
| commit | ac5ffda2447f033ddc44a87882dfcfed38d944dc (patch) | |
| tree | ee0595e3ea806f669e50b4c0ebc75b798ca3959d | |
| parent | 71883a62fcd6c70639fa12cda733378b4d997409 (diff) | |
| download | linux-ac5ffda2447f033ddc44a87882dfcfed38d944dc.tar.xz | |
KVM/x86: Use SVM assembly instruction mnemonics instead of .byte streams
Recently the minimum required version of binutils was changed to 2.20,
which supports all SVM instruction mnemonics. The patch removes
all .byte #defines and uses real instruction mnemonics instead.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/include/asm/svm.h | 7 | ||||
| -rw-r--r-- | arch/x86/kvm/svm.c | 12 |
2 files changed, 6 insertions, 13 deletions
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 93b462e48067..dec9c1e84c78 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -290,11 +290,4 @@ struct __attribute__ ((__packed__)) vmcb { #define SVM_CR0_SELECTIVE_MASK (X86_CR0_TS | X86_CR0_MP) -#define SVM_VMLOAD ".byte 0x0f, 0x01, 0xda" -#define SVM_VMRUN ".byte 0x0f, 0x01, 0xd8" -#define SVM_VMSAVE ".byte 0x0f, 0x01, 0xdb" -#define SVM_CLGI ".byte 0x0f, 0x01, 0xdd" -#define SVM_STGI ".byte 0x0f, 0x01, 0xdc" -#define SVM_INVLPGA ".byte 0x0f, 0x01, 0xdf" - #endif diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 47a9a45a2f70..00594332bba5 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -706,17 +706,17 @@ static u32 svm_msrpm_offset(u32 msr) static inline void clgi(void) { - asm volatile (__ex(SVM_CLGI)); + asm volatile (__ex("clgi")); } static inline void stgi(void) { - asm volatile (__ex(SVM_STGI)); + asm volatile (__ex("stgi")); } static inline void invlpga(unsigned long addr, u32 asid) { - asm volatile (__ex(SVM_INVLPGA) : : "a"(addr), "c"(asid)); + asm volatile (__ex("invlpga %1, %0") : : "c"(asid), "a"(addr)); } static int get_npt_level(struct kvm_vcpu *vcpu) @@ -5652,9 +5652,9 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) /* Enter guest mode */ "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" + __ex("vmload %%" _ASM_AX) "\n\t" + __ex("vmrun %%" _ASM_AX) "\n\t" + __ex("vmsave %%" _ASM_AX) "\n\t" "pop %%" _ASM_AX " \n\t" /* Save guest registers, load host registers */ |