Re: [PATCH v2 20/43] KVM: VMX: Skip Posted Interrupt updates if APICv is hard disabled

From: Paolo Bonzini
Date: Mon Oct 25 2021 - 09:48:30 EST


On 09/10/21 04:12, Sean Christopherson wrote:
+ /* Nothing to do if PI.SN==0 and the vCPU isn't being migrated. */
if (!pi_test_sn(pi_desc) && vcpu->cpu == cpu)
return;

This does not quite say "why", so:

/* Nothing to do if PI.SN and PI.NDST both have the desired value. */

Paolo