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KVM: SVM: Use svm_get_lbr_vmcb() helper to handle writes to DEBUGCTL
author
Sean Christopherson
<seanjc@google.com>
Wed, 7 Jun 2023 20:35:19 +0000
(13:35 -0700)
committer
Sean Christopherson
<seanjc@google.com>
Wed, 2 Aug 2023 23:41:55 +0000
(16:41 -0700)
Use the recently introduced svm_get_lbr_vmcb() instead an open coded
equivalent to retrieve the target VMCB when emulating writes to
MSR_IA32_DEBUGCTLMSR.
No functional change intended.
Link:
https://lore.kernel.org/r/20230607203519.1570167-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
arch/x86/kvm/svm/svm.c
patch
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diff --git
a/arch/x86/kvm/svm/svm.c
b/arch/x86/kvm/svm/svm.c
index
6fa918b
..
d76c8a0
100644
(file)
--- a/
arch/x86/kvm/svm/svm.c
+++ b/
arch/x86/kvm/svm/svm.c
@@
-3052,13
+3052,8
@@
static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
if (data & DEBUGCTL_RESERVED_BITS)
return 1;
- if (svm->vmcb->control.virt_ext & LBR_CTL_ENABLE_MASK)
- svm->vmcb->save.dbgctl = data;
- else
- svm->vmcb01.ptr->save.dbgctl = data;
-
+ svm_get_lbr_vmcb(svm)->save.dbgctl = data;
svm_update_lbrv(vcpu);
-
break;
case MSR_VM_HSAVE_PA:
/*