Don't "reconfigure" an IRTE into host controlled mode when it's already in
the state, i.e. if KVM's GSI routing changes but the IRQ wasn't and still
isn't being posted to a vCPU.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/x86.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0d9bd8535f61..8325a908fa25 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -13602,6 +13602,9 @@ static int kvm_pi_update_irte(struct kvm_kernel_irqfd *irqfd,
vcpu = NULL;
}
+ if (!irqfd->irq_bypass_vcpu && !vcpu)
+ return 0;
+
r = kvm_x86_call(pi_update_irte)(irqfd, irqfd->kvm, host_irq, irqfd->gsi,
new, vcpu, irq.vector);
if (r) {
--
2.49.0.504.g3bcea36a83-goog