* [PATCH] KVM: x86: Use VMCALL and VMMCALL mnemonics in kvm_para.h
@ 2020-06-23 18:34 Uros Bizjak
2020-06-25 12:32 ` Paolo Bonzini
0 siblings, 1 reply; 3+ messages in thread
From: Uros Bizjak @ 2020-06-23 18:34 UTC (permalink / raw)
To: kvm, linux-kernel; +Cc: Uros Bizjak, Paolo Bonzini
Current minimum required version of binutils is 2.23,
which supports VMCALL and VMMCALL instruction mnemonics.
Replace the byte-wise specification of VMCALL and
VMMCALL with these proper mnemonics.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/include/asm/kvm_para.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 49d3a9edb06f..01317493807e 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -18,7 +18,7 @@ static inline bool kvm_check_and_clear_guest_paused(void)
#endif /* CONFIG_KVM_GUEST */
#define KVM_HYPERCALL \
- ALTERNATIVE(".byte 0x0f,0x01,0xc1", ".byte 0x0f,0x01,0xd9", X86_FEATURE_VMMCALL)
+ ALTERNATIVE("vmcall", "vmmcall", X86_FEATURE_VMMCALL)
/* For KVM hypercalls, a three-byte sequence of either the vmcall or the vmmcall
* instruction. The hypervisor may replace it with something else but only the
--
2.26.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] KVM: x86: Use VMCALL and VMMCALL mnemonics in kvm_para.h
2020-06-23 18:34 [PATCH] KVM: x86: Use VMCALL and VMMCALL mnemonics in kvm_para.h Uros Bizjak
@ 2020-06-25 12:32 ` Paolo Bonzini
0 siblings, 0 replies; 3+ messages in thread
From: Paolo Bonzini @ 2020-06-25 12:32 UTC (permalink / raw)
To: Uros Bizjak, kvm, linux-kernel
On 23/06/20 20:34, Uros Bizjak wrote:
> Current minimum required version of binutils is 2.23,
> which supports VMCALL and VMMCALL instruction mnemonics.
>
> Replace the byte-wise specification of VMCALL and
> VMMCALL with these proper mnemonics.
>
> Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
> CC: Paolo Bonzini <pbonzini@redhat.com>
> ---
> arch/x86/include/asm/kvm_para.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
> index 49d3a9edb06f..01317493807e 100644
> --- a/arch/x86/include/asm/kvm_para.h
> +++ b/arch/x86/include/asm/kvm_para.h
> @@ -18,7 +18,7 @@ static inline bool kvm_check_and_clear_guest_paused(void)
> #endif /* CONFIG_KVM_GUEST */
>
> #define KVM_HYPERCALL \
> - ALTERNATIVE(".byte 0x0f,0x01,0xc1", ".byte 0x0f,0x01,0xd9", X86_FEATURE_VMMCALL)
> + ALTERNATIVE("vmcall", "vmmcall", X86_FEATURE_VMMCALL)
>
> /* For KVM hypercalls, a three-byte sequence of either the vmcall or the vmmcall
> * instruction. The hypervisor may replace it with something else but only the
>
Queued, thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] KVM: x86: Use VMCALL and VMMCALL mnemonics in kvm_para.h
@ 2020-05-08 11:23 Uros Bizjak
0 siblings, 0 replies; 3+ messages in thread
From: Uros Bizjak @ 2020-05-08 11:23 UTC (permalink / raw)
To: kvm; +Cc: Uros Bizjak, Paolo Bonzini
Current minimum required version of binutils is 2.23,
which supports VMCALL and VMMCALL instruction mnemonics.
Replace the byte-wise specification of VMCALL and
VMMCALL with these proper mnemonics.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/include/asm/kvm_para.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 9b4df6eaa11a..5e5e6c027424 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -18,7 +18,7 @@ static inline bool kvm_check_and_clear_guest_paused(void)
#endif /* CONFIG_KVM_GUEST */
#define KVM_HYPERCALL \
- ALTERNATIVE(".byte 0x0f,0x01,0xc1", ".byte 0x0f,0x01,0xd9", X86_FEATURE_VMMCALL)
+ ALTERNATIVE("vmcall", "vmmcall", X86_FEATURE_VMMCALL)
/* For KVM hypercalls, a three-byte sequence of either the vmcall or the vmmcall
* instruction. The hypervisor may replace it with something else but only the
--
2.25.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-06-25 12:33 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-06-23 18:34 [PATCH] KVM: x86: Use VMCALL and VMMCALL mnemonics in kvm_para.h Uros Bizjak
2020-06-25 12:32 ` Paolo Bonzini
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2020-05-08 11:23 Uros Bizjak
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