* [PATCH] vhost-user: only set slave channel for first vq
@ 2020-01-21 21:45 Adrian Moreno
0 siblings, 0 replies; only message in thread
From: Adrian Moreno @ 2020-01-21 21:45 UTC (permalink / raw)
To: qemu-devel; +Cc: marcandre.lureau, jasowang, Adrian Moreno, Michael S. Tsirkin
When multiqueue is enabled, a vhost_dev is created for each queue
pair. However, only one slave channel is needed.
Fixes: 4bbeeba023f2 (vhost-user: add slave-req-fd support)
Cc: marcandre.lureau@redhat.com
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
---
hw/virtio/vhost-user.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index d27a10fcc6..68a8db0ace 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -1458,9 +1458,11 @@ static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque)
"VHOST_USER_PROTOCOL_F_LOG_SHMFD feature.");
}
- err = vhost_setup_slave_channel(dev);
- if (err < 0) {
- return err;
+ if (dev->vq_index == 0) {
+ err = vhost_setup_slave_channel(dev);
+ if (err < 0) {
+ return err;
+ }
}
u->postcopy_notifier.notify = vhost_user_postcopy_notifier;
--
2.21.1
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2020-01-21 21:45 [PATCH] vhost-user: only set slave channel for first vq Adrian Moreno
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