Commit 0dd45f2c authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: x86: Re-enter guest if WRMSR(X2APIC_ICR) fastpath is successful 

Re-enter the guest in the fastpath if WRMSR emulation for x2APIC's ICR is
successful, as no additional work is needed, i.e. there is no code unique
for WRMSR exits between the fastpath and the "!= EXIT_FASTPATH_NONE" check
in __vmx_handle_exit().

Link: https://lore.kernel.org/r/20240802195120.325560-2-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 5a7c7d14

arch/x86/kvm/x86.c

+1 −1
Original line number Diff line number Diff line
@@ -2195,7 +2195,7 @@ fastpath_t handle_fastpath_set_msr_irqoff(struct kvm_vcpu *vcpu) 
		data = kvm_read_edx_eax(vcpu);

		if (!handle_fastpath_set_x2apic_icr_irqoff(vcpu, data)) {

			kvm_skip_emulated_instruction(vcpu);

			ret = EXIT_FASTPATH_EXIT_HANDLED;

			ret = EXIT_FASTPATH_REENTER_GUEST;

		}

		break;

	case MSR_IA32_TSC_DEADLINE: