From: Maxime Coquelin <maxime.coque...@redhat.com>
This patch ensures virtqueue metadata are not being
modified while rte_vhost_vring_call() is executed.
Fixes: 6c299bb7322f ("vhost: introduce vring call API")
Cc: sta...@dpdk.org
Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
Reviewed-by: David Marchand <david.march...@redhat.com>
---
This is the same as:
https://patchwork.dpdk.org/project/dpdk/patch/20220324124638.32672-2-maxime.coque...@redhat.com/
---
lib/vhost/vhost.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
index bc88148347..2f96a28dac 100644
--- a/lib/vhost/vhost.c
+++ b/lib/vhost/vhost.c
@@ -1291,11 +1291,15 @@ rte_vhost_vring_call(int vid, uint16_t vring_idx)
if (!vq)
return -1;
+ rte_spinlock_lock(&vq->access_lock);
+
if (vq_is_packed(dev))
vhost_vring_call_packed(dev, vq);
else
vhost_vring_call_split(dev, vq);
+ rte_spinlock_unlock(&vq->access_lock);
+
return 0;
}
--
2.23.0
