On 11/16/21 17:07, Sean Christopherson wrote:
if (!kvm_arch_has_assigned_device(kvm) ||
!irq_remapping_cap(IRQ_POSTING_CAP) ||
- !kvm_vcpu_apicv_active(kvm->vcpus[0]))
+ !irqchip_in_kernel(kvm) || !enable_apicv)
return 0;
idx = srcu_read_lock(&kvm->irq_srcu);
What happens then if pi_pre_block is called and the IRTE denotes a posted
interrupt?
I might be wrong, but it seems to me that you have to change all of the
occurrences this way. As soon as enable_apicv is set, you need to go
through the POSTED_INTR_WAKEUP_VECTOR just in case.
Sorry, I didn't grok that at all. All occurences of what?
Of the !assigned-device || !VTd-PI || !kvm_vcpu_apicv_active(vcpu)
checks. This way, CPUs are woken up correctly even if you have
!kvm_vcpu_apicv_active(vcpu) but the IRTE is a posted-interrupt one.
Paolo
