On Wed, 27 Nov 2024 16:00:08 -0800, Sean Christopherson wrote:
> Defer updating SVI (i.e. the VMCS's highest ISR cache) when L2 is active,
> but L1 has not enabled virtual interrupt delivery for L2, as an EOI that
> is emulated _by KVM_ in such a case acts on L1's ISR, i.e. vmcs01 needs to
> reflect the updated ISR when L1 is next run.
>
> Note, L1's ISR is also effectively L2's ISR in such a setup, but because
> virtual interrupt deliver is disable for L2, there's no need to update
> SVI in vmcs02, because it will never be used.
>
> [...]
Applied to kvm-x86 vmx, thanks!
[1/2] KVM: x86: Plumb in the vCPU to kvm_x86_ops.hwapic_isr_update()
https://github.com/kvm-x86/linux/commit/76bce9f10162
[2/2] KVM: nVMX: Defer SVI update to vmcs01 on EOI when L2 is active w/o VID
https://github.com/kvm-x86/linux/commit/b682d2fbf17c
--
https://github.com/kvm-x86/linux/tree/next
