[dpdk-dev] [PATCH v5 05/19] vhost: fix error handling when mem table gets updated
Maxime Coquelin
maxime.coquelin at redhat.com
Tue Oct 9 22:54:12 CEST 2018
When the memory table gets updated, the rings addresses need
to be translated again. If it fails, we need to exit cleanly
by unmapping memory regions.
Fixes: d5022533c20a ("vhost: retranslate vring addr when memory table changes")
Cc: stable at dpdk.org
Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Acked-by: Ilya Maximets <i.maximets at samsung.com>
---
lib/librte_vhost/vhost_user.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 1ef02c943..83d3e6321 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -953,8 +953,10 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg)
vring_invalidate(dev, vq);
dev = translate_ring_addresses(dev, i);
- if (!dev)
- return VH_RESULT_ERR;
+ if (!dev) {
+ dev = *pdev;
+ goto err_mmap;
+ }
*pdev = dev;
}
--
2.17.1
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