Re: [PATCH 00/12] iommu: Remove IOMMU_DEV_FEAT_SVA/_IOPF

[Zhangfei Gao]

On Fri, 14 Feb 2025 at 16:43, Zhangfei Gao <zhangfei.gao@xxxxxxxxxx> wrote:
>
> Hi, Baolu
>
> On Fri, 14 Feb 2025 at 14:11, Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> wrote:
> >
> > The new method for driver fault reporting support relies on the domain
> > to specify a iopf_handler. The driver should detect this and setup the
> > HW when fault capable domains are attached.
> >
> > Move SMMUv3 to use this method and have VT-D validate support during
> > attach so that all three fault capable drivers have a no-op FEAT_SVA and
> > _IOPF. Then remove them.
> >
> > This was initiated by Jason. I'm following up to remove FEAT_IOPF and
> > further clean up.
> >
> > The whole series is also available at github:
> > https://github.com/LuBaolu/intel-iommu/commits/iommu_no_feat-v1
>
> I quickly test this branch
>
> 1. host test is OK
>
> 2. qemu boot one device, test ok,
> though reports this when guest bootup.
> vfio-pci xxx: resetting
> vfio-pci xxx: reset done
>
> 3. qemu boot multi device,  test fails, host kernel reports [Hardware Error]
> qemu can boot no problem
> Test fails.
>
> Will do more checks without these patches.

Test on 6.14-rc2 without this patch set

1. qemu boot multi device,  test OK

2. log "vfio-pci xxx: resetting/reset done" also exists.

Thanks