Commit 23a1c257 authored by Feng Wu's avatar Feng Wu Committed by Paolo Bonzini

KVM: Recover IRTE to remapped mode if the interrupt is not single-destination

When the interrupt is not single destination any more, we need
to change back IRTE to remapped mode explicitly.
Signed-off-by: default avatarFeng Wu <feng.wu@intel.com>
Reviewed-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b51012de
...@@ -10764,8 +10764,21 @@ static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq, ...@@ -10764,8 +10764,21 @@ static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
*/ */
kvm_set_msi_irq(e, &irq); kvm_set_msi_irq(e, &irq);
if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu)) if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu)) {
/*
* Make sure the IRTE is in remapped mode if
* we don't handle it in posted mode.
*/
ret = irq_set_vcpu_affinity(host_irq, NULL);
if (ret < 0) {
printk(KERN_INFO
"failed to back to remapped mode, irq: %u\n",
host_irq);
goto out;
}
continue; continue;
}
vcpu_info.pi_desc_addr = __pa(vcpu_to_pi_desc(vcpu)); vcpu_info.pi_desc_addr = __pa(vcpu_to_pi_desc(vcpu));
vcpu_info.vector = irq.vector; vcpu_info.vector = irq.vector;
......
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