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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 <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20211208015236.1616697-21-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2021-12-08 01:52:30 +00:00 committed by Paolo Bonzini
parent ccf8d68754
commit 635e6357f9
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/vmx/posted_intr.c
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@ -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);
}
raw_spin_unlock(&per_cpu(wakeup_vcpus_on_cpu_lock, cpu));
}