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KVM: x86: Check for in-kernel xAPIC when querying APICv for directed yield

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Use kvm_vcpu_apicv_active() to check if APICv is active when seeing if a
vCPU is a candidate for directed yield due to a pending ACPIv interrupt.
This will allow moving apicv_active into kvm_lapic without introducing a
potential NULL pointer deref (kvm_vcpu_apicv_active() effectively adds a
pre-check on the vCPU having an in-kernel APIC).

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220614230548.3852141-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2022-06-14 23:05:46 +00:00 committed by Paolo Bonzini
parent d39850f57d
commit ae801e1303
1 changed files with 2 additions and 1 deletions

3
arch/x86/kvm/x86.c
View File

@ -12395,7 +12395,8 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
bool kvm_arch_dy_has_pending_interrupt(struct kvm_vcpu *vcpu)
{
if (vcpu->arch.apicv_active && static_call(kvm_x86_dy_apicv_has_pending_interrupt)(vcpu))
if (kvm_vcpu_apicv_active(vcpu) &&
static_call(kvm_x86_dy_apicv_has_pending_interrupt)(vcpu))
return true;
return false;