From: Alexey Dobriyan <adobriyan@gmail.com>
To: pbonzini@redhat.com
Cc: kvm@vger.kernel.org, adobriyan@gmail.com
Subject: [PATCH] vmx: use mov instead of lea in __vmx_vcpu_run()
Date: Thu, 17 Nov 2022 23:36:13 +0300 [thread overview]
Message-ID: <Y3abPTOAxbLOpnVN@p183> (raw)
"mov rsi, rsp" is equivalent to "lea rsi, [rsp]" but 1 byte shorter.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
arch/x86/kvm/vmx/vmenter.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/vmx/vmenter.S
+++ b/arch/x86/kvm/vmx/vmenter.S
@@ -72,7 +72,7 @@ SYM_FUNC_START(__vmx_vcpu_run)
/* Copy @flags to BL, _ASM_ARG3 is volatile. */
mov %_ASM_ARG3B, %bl
- lea (%_ASM_SP), %_ASM_ARG2
+ mov %_ASM_SP, %_ASM_ARG2
call vmx_update_host_rsp
ALTERNATIVE "jmp .Lspec_ctrl_done", "", X86_FEATURE_MSR_SPEC_CTRL
next reply other threads:[~2022-11-17 20:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-17 20:36 Alexey Dobriyan [this message]
2022-11-18 0:20 ` [PATCH] vmx: use mov instead of lea in __vmx_vcpu_run() Sean Christopherson
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