On Thu, Apr 13, 2023 at 08:01:54PM +0900, Akihiko Odaki
wrote:> Yes, that's right. The guest can dynamically create and delete VFs. The
> device is emulated by QEMU: igb, an Intel NIC recently added to QEMU and
> projected to be released as part of QEMU 8.0.
Ah great, that's really useful, I'll add it to my tests
> > Yes, I think this is an issue in the virtio-iommu driver, which should
be
> > sending a DETACH request when the VF is disabled, likely from
> > viommu_release_device(). I'll work on a fix unless you would like
to do it
>
> It will be nice if you prepare a fix. I will test your patch with my
> workload if you share it with me.
I sent a fix:
https://lore.kernel.org/linux-iommu/20230414150744.562456-1-jean-philippe at
linaro.org/
Thank you for reporting this, it must have been annoying to debug
Thanks,
Jean
