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| author | Xie Yongji <xieyongji@baidu.com> | 2019-02-28 16:53:49 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-03-12 22:31:21 -0400 |
| commit | 5ad204bf2a06bf29234df9e6f1ef6c566771b40c (patch) | |
| tree | 14ae9d6c8aeb387104d49e015e98e777dcab3e38 /contrib/libvhost-user/libvhost-user.c | |
| parent | 1b8fff57584d04a94cc77b8d3f535d35f5827a5e (diff) | |
| download | qemu-5ad204bf2a06bf29234df9e6f1ef6c566771b40c.zip | |
vhost-user: Support transferring inflight buffer between qemu and backend
This patch introduces two new messages VHOST_USER_GET_INFLIGHT_FD
and VHOST_USER_SET_INFLIGHT_FD to support transferring a shared
buffer between qemu and backend.
Firstly, qemu uses VHOST_USER_GET_INFLIGHT_FD to get the
shared buffer from backend. Then qemu should send it back
through VHOST_USER_SET_INFLIGHT_FD each time we start vhost-user.
This shared buffer is used to track inflight I/O by backend.
Qemu should retrieve a new one when vm reset.
Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Chai Wen <chaiwen@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190228085355.9614-2-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'contrib/libvhost-user/libvhost-user.c')
0 files changed, 0 insertions, 0 deletions