From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
To: "Akihiko Odaki" <akihiko.odaki@daynix.com>,
"Huang Rui" <ray.huang@amd.com>,
"Marc-André Lureau" <marcandre.lureau@gmail.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Gerd Hoffmann" <kraxel@redhat.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Anthony PERARD" <anthony.perard@citrix.com>,
"Antonio Caggiano" <quic_acaggian@quicinc.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
"Robert Beckett" <bob.beckett@collabora.com>,
"Gert Wollny" <gert.wollny@collabora.com>,
"Alex Bennée" <alex.bennee@linaro.org>
Cc: qemu-devel@nongnu.org,
"Gurchetan Singh" <gurchetansingh@chromium.org>,
ernunes@redhat.com, "Alyssa Ross" <hi@alyssa.is>,
"Roger Pau Monné" <roger.pau@citrix.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Stefano Stabellini" <stefano.stabellini@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Xenia Ragiadakou" <xenia.ragiadakou@amd.com>,
"Pierre-Eric Pelloux-Prayer" <pierre-eric.pelloux-prayer@amd.com>,
"Honglei Huang" <honglei1.huang@amd.com>,
"Julia Zhang" <julia.zhang@amd.com>,
"Chen Jiqian" <Jiqian.Chen@amd.com>,
"Yiwei Zhang" <zzyiwei@chromium.org>
Subject: Re: [PATCH v8 08/11] virtio-gpu: Handle resource blob commands
Date: Thu, 9 May 2024 15:29:18 +0300 [thread overview]
Message-ID: <1847a882-2199-4d1b-b86a-832a9d33d283@collabora.com> (raw)
In-Reply-To: <48d03070-6002-4953-aa09-47ae72b8f291@daynix.com>
On 5/5/24 09:47, Akihiko Odaki wrote:
> On 2024/05/02 4:20, Dmitry Osipenko wrote:
>> On 4/27/24 08:52, Akihiko Odaki wrote:
>>> On 2024/04/24 19:30, Dmitry Osipenko wrote:
>>>> On 4/19/24 12:18, Akihiko Odaki wrote:
>>>>>> @@ -61,6 +61,10 @@ struct virtio_gpu_simple_resource {
>>>>>> int dmabuf_fd;
>>>>>> uint8_t *remapped;
>>>>>> + MemoryRegion *mr;
>>>>>> + bool async_unmap_completed;
>>>>>> + bool async_unmap_in_progress;
>>>>>> +
>>>>>
>>>>> Don't add fields to virtio_gpu_simple_resource but instead create a
>>>>> struct that embeds virtio_gpu_simple_resource in virtio-gpu-virgl.c.
>>>>
>>>> Please give a justification. I'd rather rename
>>>> virtio_gpu_simple_resource s/_simple//. Simple resource already
>>>> supports
>>>> blob and the added fields are directly related to the blob. Don't see
>>>> why another struct is needed.
>>>>
>>>
>>> Because mapping is only implemented in virtio-gpu-gl while blob itself
>>> is implemented also in virtio-gpu.
>>
>> Rutubaga maps blobs and it should do unmapping blobs asynchronously as
>> well, AFAICT.
>>
>
> Right. It makes sense to put mr in struct virtio_gpu_simple_resource in
> preparation for such a situation.
>
> Based on this discussion, I think it is fine to put mr either in struct
> virtio_gpu_simple_resource or a distinct struct. However if you put mr
> in struct virtio_gpu_simple_resource, the logic that manages
> MemoryRegion should also be moved to virtio-gpu.c for consistency.
Rutabaga uses static MRs. It will either need a different workaround or
will have to move to dynamic MRs. I'll keep using distinct struct for now.
AFAICT, its a lesser problem for rutabaga because static MR isn't
subjected to the dynamic MR UAF problem that virgl has. On the other
hand, rutabaga is re-initing already inited static MR object on each new
mapping, that looks like a bug and it will need to move to dynamic MRs.
--
Best regards,
Dmitry
next prev parent reply other threads:[~2024-05-09 12:30 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-18 19:00 [PATCH v8 00/11] Support blob memory and venus on qemu Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 01/11] linux-headers: Update to Linux v6.9-rc3 Dmitry Osipenko
2024-05-10 10:46 ` Alex Bennée
2024-05-10 16:23 ` Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 02/11] virtio-gpu: Use pkgconfig version to decide which virgl features are available Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 03/11] virtio-gpu: Support context-init feature with virglrenderer Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 04/11] virtio-gpu: Don't require udmabuf when blobs and virgl are enabled Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 05/11] virtio-gpu: Add virgl resource management Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 06/11] virtio-gpu: Support blob scanout using dmabuf fd Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 07/11] virtio-gpu: Support suspension of commands processing Dmitry Osipenko
2024-04-19 8:53 ` Akihiko Odaki
2024-04-24 9:43 ` Dmitry Osipenko
2024-04-27 5:48 ` Akihiko Odaki
2024-05-01 19:02 ` Dmitry Osipenko
2024-05-05 6:37 ` Akihiko Odaki
2024-05-09 12:39 ` Dmitry Osipenko
2024-05-10 10:56 ` Akihiko Odaki
2024-05-10 16:12 ` Dmitry Osipenko
2024-05-10 16:33 ` Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 08/11] virtio-gpu: Handle resource blob commands Dmitry Osipenko
2024-04-19 9:18 ` Akihiko Odaki
2024-04-24 10:30 ` Dmitry Osipenko
2024-04-27 5:52 ` Akihiko Odaki
2024-05-01 19:20 ` Dmitry Osipenko
2024-05-05 6:47 ` Akihiko Odaki
2024-05-09 12:29 ` Dmitry Osipenko [this message]
2024-04-18 19:00 ` [PATCH v8 09/11] virtio-gpu: Resource UUID Dmitry Osipenko
2024-04-19 9:29 ` Akihiko Odaki
2024-04-23 17:43 ` Dmitry Osipenko
2024-04-24 12:52 ` Dmitry Osipenko
2024-04-18 19:00 ` [PATCH v8 10/11] virtio-gpu: Register capsets dynamically Dmitry Osipenko
2024-04-19 9:35 ` Akihiko Odaki
2024-04-18 19:00 ` [PATCH v8 11/11] virtio-gpu: Support Venus context Dmitry Osipenko
2024-04-19 9:44 ` Akihiko Odaki
2024-04-23 8:30 ` [PATCH v8 00/11] Support blob memory and venus on qemu Alex Bennée
2024-04-23 17:37 ` Dmitry Osipenko
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