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KVM: SVM,VMX: Use %rip-relative addressing to access kvm_rebooting

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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>
Link: https://lore.kernel.org/r/20231031075312.47525-1-ubizjak@gmail.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Uros Bizjak
2023-10-31 08:52:40 +01:00
committed by Sean Christopherson
parent c52ffadc65
commit 15223c4f97
2 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/x86/kvm/svm/vmenter.S
+5 -5
View File
@@ -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
arch/x86/kvm/vmx/vmenter.S
+1 -1
View File
@@ -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: