Commit a85cd52d authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: SVM: Use svm_get_lbr_vmcb() helper to handle writes to DEBUGCTL 

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: default avatarSean Christopherson <seanjc@google.com>
parent 41dfb5f1

arch/x86/kvm/svm/svm.c

+1 −6
Original line number Diff line number Diff line
@@ -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:

		/*