Re: [PATCH v17 00/13] Support blob memory and venus on qemu

[Alex Bennée]

Dmitry Osipenko <dmitry.osipenko@collabora.com> writes:

> Hello,
>
> This series enables Vulkan Venus context support on virtio-gpu.
>
> All virglrender and almost all Linux kernel prerequisite changes
> needed by Venus are already in upstream. For kernel there is a pending
> KVM patchset that fixes mapping of compound pages needed for DRM drivers
> using TTM or huge pages [1], othewrwise hostmem blob mapping will fail
> with a KVM error from Qemu.
>
> [1] https://lore.kernel.org/all/20240726235234.228822-1-seanjc@google.com/
>
> On guest you'll need to use recent Mesa 24.2+ version containing patch
> that removes dependency on cross-device feature from Venus that isn't
> supported by Qemu [2].
>
> [2]
> https://gitlab.freedesktop.org/mesa/mesa/-/commit/087e9a96d13155e26987befae78b6ccbb7ae242b

I've expanded the set of working tests so:

x86 host, Intel GPU

 x86/kvm Trixie guest + latest mesa - works
 aarch64/tcg buildroot guest - works

Aarch64 host, AMD GPU

 x86/tcg Trixies guest + latest mesa - works
 aarch64/kvm buildroot guest - works

As the Aarch64 HW I'm testing on (AVA Devbox) needs additional patches
on top of Sean's series to deal with the busted Altra PCI which I
provide here:

 
https://git.linaro.org/people/alex.bennee/linux.git/log/?h=review/pfn-references-v12-with-altra-tweaks

Anyway I'll re-state:

  Tested-by: Alex Bennée <alex.bennee@linaro.org>

And I think this series is ready to merge once the tree re-opens.

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro