* [PATCH] KVM: SVM,VMX: Use %rip-relative addressing to access kvm_rebooting
@ 2023-10-31 7:52 Uros Bizjak
2023-12-01 1:52 ` Sean Christopherson
0 siblings, 1 reply; 2+ messages in thread
From: Uros Bizjak @ 2023-10-31 7:52 UTC (permalink / raw)
To: kvm, linux-kernel; +Cc: Uros Bizjak, Sean Christopherson, Paolo Bonzini
Instruction with %rip-relative address operand is one byte shorter than
its absolute address counterpart and is also compatible with position
independent executable (-fpie) build.
No functional changes intended.
Cc: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
---
arch/x86/kvm/svm/vmenter.S | 10 +++++-----
arch/x86/kvm/vmx/vmenter.S | 2 +-
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kvm/svm/vmenter.S b/arch/x86/kvm/svm/vmenter.S
index ef2ebabb059c..9499f9c6b077 100644
--- a/arch/x86/kvm/svm/vmenter.S
+++ b/arch/x86/kvm/svm/vmenter.S
@@ -270,16 +270,16 @@ SYM_FUNC_START(__svm_vcpu_run)
RESTORE_GUEST_SPEC_CTRL_BODY
RESTORE_HOST_SPEC_CTRL_BODY
-10: cmpb $0, kvm_rebooting
+10: cmpb $0, _ASM_RIP(kvm_rebooting)
jne 2b
ud2
-30: cmpb $0, kvm_rebooting
+30: cmpb $0, _ASM_RIP(kvm_rebooting)
jne 4b
ud2
-50: cmpb $0, kvm_rebooting
+50: cmpb $0, _ASM_RIP(kvm_rebooting)
jne 6b
ud2
-70: cmpb $0, kvm_rebooting
+70: cmpb $0, _ASM_RIP(kvm_rebooting)
jne 8b
ud2
@@ -381,7 +381,7 @@ SYM_FUNC_START(__svm_sev_es_vcpu_run)
RESTORE_GUEST_SPEC_CTRL_BODY
RESTORE_HOST_SPEC_CTRL_BODY
-3: cmpb $0, kvm_rebooting
+3: cmpb $0, _ASM_RIP(kvm_rebooting)
jne 2b
ud2
diff --git a/arch/x86/kvm/vmx/vmenter.S b/arch/x86/kvm/vmx/vmenter.S
index be275a0410a8..906ecd001511 100644
--- a/arch/x86/kvm/vmx/vmenter.S
+++ b/arch/x86/kvm/vmx/vmenter.S
@@ -289,7 +289,7 @@ SYM_INNER_LABEL_ALIGN(vmx_vmexit, SYM_L_GLOBAL)
RET
.Lfixup:
- cmpb $0, kvm_rebooting
+ cmpb $0, _ASM_RIP(kvm_rebooting)
jne .Lvmfail
ud2
.Lvmfail:
--
2.41.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] KVM: SVM,VMX: Use %rip-relative addressing to access kvm_rebooting
2023-10-31 7:52 [PATCH] KVM: SVM,VMX: Use %rip-relative addressing to access kvm_rebooting Uros Bizjak
@ 2023-12-01 1:52 ` Sean Christopherson
0 siblings, 0 replies; 2+ messages in thread
From: Sean Christopherson @ 2023-12-01 1:52 UTC (permalink / raw)
To: Sean Christopherson, kvm, linux-kernel, Uros Bizjak; +Cc: Paolo Bonzini
On Tue, 31 Oct 2023 08:52:40 +0100, Uros Bizjak wrote:
> Instruction with %rip-relative address operand is one byte shorter than
> its absolute address counterpart and is also compatible with position
> independent executable (-fpie) build.
>
> No functional changes intended.
>
>
> [...]
Applied to kvm-x86 misc, thanks!
[1/1] KVM: SVM,VMX: Use %rip-relative addressing to access kvm_rebooting
https://github.com/kvm-x86/linux/commit/15223c4f973a
--
https://github.com/kvm-x86/linux/tree/next
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-10-31 7:52 [PATCH] KVM: SVM,VMX: Use %rip-relative addressing to access kvm_rebooting Uros Bizjak
2023-12-01 1:52 ` Sean Christopherson
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