Re: [PATCH 0/8] Initial support for SMMUv3 nested translation

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On Tue, Aug 20, 2024 at 08:20:32AM +0000, Mostafa Saleh wrote:
> > This is the first series in what will be several to complete nesting
> > support. At least:
> >  - IOMMU_RESV_SW_MSI related fixups
> >  - VIOMMU object support to allow ATS invalidations
> >  - vCMDQ hypervisor support for direct invalidation queue assignment
> >  - KVM pinned VMID using VIOMMU for vBTM
> >  - Cross instance S2 sharing
> >  - Virtual Machine Structure using VIOMMU (for vMPAM?)
> >  - Fault forwarding support through IOMMUFD's fault fd for vSVA
> >
> > It is enough to allow significant amounts of qemu work to progress.
> >

> Are there any qemu patches to tests this?
> As I am confused with some of the user space bits and that would help.

I have the qemu patches, but am running some backlogs to keep it
updated, and don't have one exactly fitting to test this series.

I collected a few remarks from Jason regarding the VIOMMU series.
And I am reworking on it. I plan to post a testable QEMU branch
with the next VIOMMU version. Will CC you and more folks.

Thanks
Nicolin




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