Re: [PATCH 0/5] KVM: nVMX: Honor event priority for PI ack at VM-Enter

From: Sean Christopherson
Date: Wed Dec 18 2024 - 21:47:23 EST


On Fri, 01 Nov 2024 12:14:42 -0700, Sean Christopherson wrote:
> Rework and cleanup KVM's event handling during nested VM-Enter emulation,
> and ultimately fix a bug where KVM doesn't honor event priority when
> delivering a nested posted interrupt. Specifically, if there is a posted
> interrupt *notification* IRQ in L1's vIRR, the IRQ should not be acked by
> the CPU if a higher priority event is recognized after VM-Enter (which
> unblocks L1 IRQs).
>
> [...]

Applied to kvm-x86 vmx, thanks!

[1/5] KVM: nVMX: Explicitly update vPPR on successful nested VM-Enter
https://github.com/kvm-x86/linux/commit/637df11290b3
[2/5] KVM: nVMX: Check for pending INIT/SIPI after entering non-root mode
https://github.com/kvm-x86/linux/commit/3d0e20e45378
[3/5] KVM: nVMX: Drop manual vmcs01.GUEST_INTERRUPT_STATUS.RVI check at VM-Enter
https://github.com/kvm-x86/linux/commit/2732f6a7ccee
[4/5] KVM: nVMX: Use vmcs01's controls shadow to check for IRQ/NMI windows at VM-Enter
https://github.com/kvm-x86/linux/commit/1a265986bff6
[5/5] KVM: nVMX: Honor event priority when emulating PI delivery during VM-Enter
https://github.com/kvm-x86/linux/commit/ce5cdfb49813

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https://github.com/kvm-x86/linux/tree/next