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

[Dmitry Osipenko]

On 8/27/24 12:57, Alex Bennée wrote:
> 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.

Thanks for the update, nice to see that you nailed the ARM problem

-- 
Best regards,
Dmitry