Re: [RFC PATCH v3 0/6] Add support for AMD IOMMU GAPPI
Sairaj Kodilkar <[email protected]>
| Newsgroups | org.kernel.vger.linux-doc,dev.linux.lists.iommu,org.kernel.vger.kvm,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On 8/11/2026 6:18 AM, Sean Christopherson wrote: > On Mon, Jul 13, 2026, Sairaj Kodilkar wrote: >> On newer generations of AMD processors, IOMMU AVIC/x2AVIC guest-mode interrupt >> remapping can use Guest APIC Physical Processor Interrupt (GAPPI) as an >> alternative host-notification path when device interrupts target a vCPU that >> is not running (IRTE[IsRun] = 0). > > Why is this still an RFC? I mean that in a good way. I haven't looked at this > super duper closely, but the patches all look to be in generally good shape. > I.e. this seems well beyond RFC, unless there's a hard blocker or something, > e.g. known bugs? Sorry I forgot to remove RFC while sending the v3, will remove it from next version onward. > > Another bigger picture comment: I'm very tempted to say this has a hard dependency > on KVM's irq_test[*] adding support for AMD. I know it's being worked on, but I > can't remember who is doing the work, or when it's expected... > > [*] https://lore.kernel.org/all/[email protected] Sure. I'll look into it and will see if anyone from the AMD is working on it actively. Thanks Sairaj