From: Xuan Ding <xuan.d...@intel.com>
Since QEMU 5.2.0 fixes the vhost split ring multi-queue reconnection
issue in commit f66337bdbfda ("vhost-user: save features of multiqueues
if chardev is closed"), this patch updates known issue to indicate
the range of affeacted QEMU versions.
Fixes: b37e95507e1b ("doc: add vhost multi-queue reconnection issue")
Cc: sta...@dpdk.org
Signed-off-by: Xuan Ding <xuan.d...@intel.com>
---
v3:
* Updated affected QEMU versions.
v2:
* Add fixes in commit title and log.
---
doc/guides/rel_notes/known_issues.rst | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/doc/guides/rel_notes/known_issues.rst
b/doc/guides/rel_notes/known_issues.rst
index 187d9c942e..bd89d58d24 100644
--- a/doc/guides/rel_notes/known_issues.rst
+++ b/doc/guides/rel_notes/known_issues.rst
@@ -885,14 +885,15 @@ Unsuitable IOVA mode may be picked as the default
**Driver/Module**:
ALL.
-Vhost multi-queue reconnection failed with QEMU version >= 4.2.0
-----------------------------------------------------------------
+Vhost multi-queue reconnection failed with QEMU version 4.2.0 to 5.1.0-rc3
+--------------------------------------------------------------------------
**Description**
It's a QEMU regression bug (bad commit: c6beefd674ff). QEMU only saves
acked features for one vhost-net when vhost quits. When vhost reconnects
to virtio-net/virtio-pmd in multi-queue situations, the features been
- set multiple times are not consistent.
+ set multiple times are not consistent. QEMU-5.2.0 fixes this issue in commit
+ f66337bdbfda ("vhost-user: save features of multiqueues if chardev is
closed").
**Implication**
Vhost cannot reconnect back to virtio-net/virtio-pmd normally.
--
2.17.1
