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Message-ID: <2f8bcce1-6551-6c2d-481c-67502c82bc68@collabora.com>
Date:   Tue, 10 Oct 2023 18:40:47 +0300
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Subject: Re: [PATCH v3] drm/virtio: add new virtio gpu capset definitions
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To:     Huang Rui <ray.huang@amd.com>, dri-devel@lists.freedesktop.org,
        virtualization@lists.linux-foundation.org,
        linux-kernel@vger.kernel.org, David Airlie <airlied@redhat.com>,
        Gerd Hoffmann <kraxel@redhat.com>,
        Gurchetan Singh <gurchetansingh@chromium.org>,
        Chia-I Wu <olvaffe@gmail.com>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Akihiko Odaki <akihiko.odaki@daynix.com>,
        =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= <marcandre.lureau@gmail.com>
Cc:     Alex Deucher <alexander.deucher@amd.com>,
        Xenia Ragiadakou <xenia.ragiadakou@amd.com>,
        Stefano Stabellini <stefano.stabellini@amd.com>,
        Honglei Huang <honglei1.huang@amd.com>,
        Julia Zhang <julia.zhang@amd.com>,
        Chen Jiqian <Jiqian.Chen@amd.com>
References: <20231010135722.1142265-1-ray.huang@amd.com>
From:   Dmitry Osipenko <dmitry.osipenko@collabora.com>
In-Reply-To: <20231010135722.1142265-1-ray.huang@amd.com>
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Precedence: bulk

On 10/10/23 16:57, Huang Rui wrote:
> These definitions are used fro qemu, and qemu imports this marco in the
> headers to enable gfxstream, venus, cross domain, and drm (native
> context) for virtio gpu. So it should add them even kernel doesn't use
> this.
> 
> Signed-off-by: Huang Rui <ray.huang@amd.com>
> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> ---
> 
> Changes V1 -> V2:
> - Add all capsets including gfxstream and venus in kernel header (Dmitry Osipenko)
> 
> Changes V2 -> V3:
> - Add missed capsets including cross domain and drm (native context)
>   (Dmitry Osipenko)
> 
> v1: https://lore.kernel.org/lkml/20230915105918.3763061-1-ray.huang@amd.com/
> v2: https://lore.kernel.org/lkml/20231010032553.1138036-1-ray.huang@amd.com/
> 
>  include/uapi/linux/virtio_gpu.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
> index f556fde07b76..240911c8da31 100644
> --- a/include/uapi/linux/virtio_gpu.h
> +++ b/include/uapi/linux/virtio_gpu.h
> @@ -309,6 +309,10 @@ struct virtio_gpu_cmd_submit {
>  
>  #define VIRTIO_GPU_CAPSET_VIRGL 1
>  #define VIRTIO_GPU_CAPSET_VIRGL2 2
> +#define VIRTIO_GPU_CAPSET_GFXSTREAM 3

The GFXSTREAM capset isn't correct, it should be GFXSTREAM_VULKAN in
accordance to [1] and [2]. There are more capsets for GFXSTREAM.

[1]
https://github.com/google/crosvm/blob/main/rutabaga_gfx/src/rutabaga_utils.rs#L172

[2]
https://patchwork.kernel.org/project/qemu-devel/patch/20231006010835.444-7-gurchetansingh@chromium.org/

-- 
Best regards,
Dmitry