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virtio-gpu api: Add a comment on VIRTIO_GPU_SHM_ID_HOST_VISIBLE

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This provides a description of how the kernel driver uses the
shmid to determine capabilities.

Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20201119010809.528-3-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Anthoine Bourgeois 2020-11-18 17:08:07 -08:00 committed by Gerd Hoffmann
parent 7efb5f38ac
commit c12096085b
1 changed files with 4 additions and 0 deletions
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4
include/uapi/linux/virtio_gpu.h
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@ -115,6 +115,10 @@ enum virtio_gpu_ctrl_type {
enum virtio_gpu_shm_id {
VIRTIO_GPU_SHM_ID_UNDEFINED = 0,
/*
* VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB
* VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB
*/
VIRTIO_GPU_SHM_ID_HOST_VISIBLE = 1
};