From 0dd45f2cd8ccf150c6fe7a528e9a5282026ed30c Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Fri, 2 Aug 2024 12:51:16 -0700 Subject: [PATCH] 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: Sean Christopherson --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 00e792725052..0c97dd5a0197 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -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: -- 2.50.1