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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2019-05-24 15:09:38 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-05-29 06:29:07 +0200 |
| commit | bd2e44fee474c43f54aadd35b5b8fd5ba8f4d11f (patch) | |
| tree | 07c1d44ede00c80816611454fde2e9c8f90da9bb /hw/virtio/vhost-user.c | |
| parent | da35f7f1eeff9f249a9597400fc514c83fd3a0f8 (diff) | |
| download | qemu-bd2e44fee474c43f54aadd35b5b8fd5ba8f4d11f.zip | |
vhost-user: add vhost_user_gpu_set_socket()
Add a new vhost-user message to give a unix socket to a vhost-user
backend for GPU display updates.
Back when I started that work, I added a new GPU channel because the
vhost-user protocol wasn't bidirectional. Since then, there is a
vhost-user-slave channel for the slave to send requests to the master.
We could extend it with GPU messages. However, the GPU protocol is
quite orthogonal to vhost-user, thus I chose to have a new dedicated
channel.
See vhost-user-gpu.rst for the protocol details.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190524130946.31736-2-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/virtio/vhost-user.c')
| -rw-r--r-- | hw/virtio/vhost-user.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 553319c7ac..4ca5b2551e 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -96,6 +96,7 @@ typedef enum VhostUserRequest { VHOST_USER_POSTCOPY_END = 30, VHOST_USER_GET_INFLIGHT_FD = 31, VHOST_USER_SET_INFLIGHT_FD = 32, + VHOST_USER_GPU_SET_SOCKET = 33, VHOST_USER_MAX } VhostUserRequest; @@ -353,6 +354,16 @@ static int vhost_user_write(struct vhost_dev *dev, VhostUserMsg *msg, return 0; } +int vhost_user_gpu_set_socket(struct vhost_dev *dev, int fd) +{ + VhostUserMsg msg = { + .hdr.request = VHOST_USER_GPU_SET_SOCKET, + .hdr.flags = VHOST_USER_VERSION, + }; + + return vhost_user_write(dev, &msg, &fd, 1); +} + static int vhost_user_set_log_base(struct vhost_dev *dev, uint64_t base, struct vhost_log *log) { |