From: Sean Christopherson Date: Wed, 8 Dec 2021 01:52:30 +0000 (+0000) Subject: KVM: VMX: Don't do full kick when handling posted interrupt wakeup X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=859bdd105afb0615881ba30ff0a0d12fc27a9566;p=users%2Fdwmw2%2Flinux.git KVM: VMX: Don't do full kick when handling posted interrupt wakeup When waking vCPUs in the posted interrupt wakeup handling, do exactly that and no more. There is no need to kick the vCPU as the wakeup handler just needs to get the vCPU task running, and if it's in the guest then it's definitely running. Signed-off-by: Sean Christopherson Reviewed-by: Maxim Levitsky Message-Id: <20211208015236.1616697-21-seanjc@google.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/vmx/posted_intr.c b/arch/x86/kvm/vmx/posted_intr.c index 023a6b9b0fa47..f4169c0094006 100644 --- a/arch/x86/kvm/vmx/posted_intr.c +++ b/arch/x86/kvm/vmx/posted_intr.c @@ -209,7 +209,7 @@ void pi_wakeup_handler(void) pi_wakeup_list) { if (pi_test_on(&vmx->pi_desc)) - kvm_vcpu_kick(&vmx->vcpu); + kvm_vcpu_wake_up(&vmx->vcpu); } spin_unlock(&per_cpu(wakeup_vcpus_on_cpu_lock, cpu)); }