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author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-08-29 17:27:50 +0200 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2017-09-08 16:15:17 +0300 |
commit | 35480cbfcb73143af66c8de4b444d686a46c2e88 (patch) | |
tree | 124ca6232f5b1fbc1a688096fc0aae14944cc1b2 /contrib/libvhost-user/libvhost-user.h | |
parent | 0b4a775188cbe411d9ce7073ea1a24b72848327e (diff) | |
download | qemu-35480cbfcb73143af66c8de4b444d686a46c2e88.zip qemu-35480cbfcb73143af66c8de4b444d686a46c2e88.tar.gz qemu-35480cbfcb73143af66c8de4b444d686a46c2e88.tar.bz2 |
libvhost-user: support resuming vq->last_avail_idx based on used_idx
This is the same workaround as commit 523b018dde3b765, which was lost
with libvhost-user transition in commit e10e798c85c2331.
Signed-off-by: Marc-André Lureau <marcandre.lureau@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.h')
-rw-r--r-- | contrib/libvhost-user/libvhost-user.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-user.h index 53ef222..4021f11 100644 --- a/contrib/libvhost-user/libvhost-user.h +++ b/contrib/libvhost-user/libvhost-user.h @@ -132,6 +132,7 @@ typedef void (*vu_set_features_cb) (VuDev *dev, uint64_t features); typedef int (*vu_process_msg_cb) (VuDev *dev, VhostUserMsg *vmsg, int *do_reply); typedef void (*vu_queue_set_started_cb) (VuDev *dev, int qidx, bool started); +typedef bool (*vu_queue_is_processed_in_order_cb) (VuDev *dev, int qidx); typedef struct VuDevIface { /* called by VHOST_USER_GET_FEATURES to get the features bitmask */ @@ -148,6 +149,12 @@ typedef struct VuDevIface { vu_process_msg_cb process_msg; /* tells when queues can be processed */ vu_queue_set_started_cb queue_set_started; + /* + * If the queue is processed in order, in which case it will be + * resumed to vring.used->idx. This can help to support resuming + * on unmanaged exit/crash. + */ + vu_queue_is_processed_in_order_cb queue_is_processed_in_order; } VuDevIface; typedef void (*vu_queue_handler_cb) (VuDev *dev, int qidx); |