Re: [PATCH v8 09/11] virtio-gpu: Resource UUID

[Dmitry Osipenko]

On 4/19/24 12:29, Akihiko Odaki wrote:
> On 2024/04/19 4:00, Dmitry Osipenko wrote:
>> From: Antonio Caggiano <antonio.caggiano@collabora.com>
>>
>> Enable resource UUID feature and implement command resource assign UUID.
>> UUID feature availability is mandatory for Vulkan Venus context.
>>
>> UUID is intended for sharing dmabufs between virtio devices on host. Qemu
>> doesn't have second virtio device for sharing, thus a simple stub UUID
>> implementation is enough. More complete implementation using global UUID
>> resource table might become interesting for a multi-gpu cases.
> 
> Isn't it possible to add two virtio-gpu devices even now?

We can add two virtio-gpu devices, but these devices can't interact with
each other efficiently. They won't be able to share host blob resources
without proper UUID implementation.

> A new subsection should also be added for migration compatibility; see:
> docs/devel/migration/main.rst

Will update the docs, thanks.

-- 
Best regards,
Dmitry