vhost kernel driver does not support mutiple queue yet,
Tweak queue number will fail with "--net mode=tap,vhost=1,mq=2"
as below when lkvm trying to set ring kick fd for queue 2:
VHOST_SET_VRING_KICK failed: No buffer space available
Error on this scenario, and overide with the default one queue
configuration.
Signed-off-by: Fan Du <fan.du@xxxxxxxxx>
---
tools/kvm/virtio/net.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/kvm/virtio/net.c b/tools/kvm/virtio/net.c
index 5678ff2..32159f1 100644
--- a/tools/kvm/virtio/net.c
+++ b/tools/kvm/virtio/net.c
@@ -714,6 +714,10 @@ static int set_net_param(struct kvm *kvm, struct virtio_net_params *p,
p->mq = atoi(val);
} else
die("Unknown network parameter %s", param);
+ if (p->vhost && p->mq > 1) {
+ p->mq = 1;
+ pr_err("Virtio vhost does not support mq yet, overide mq to 1.");
+ }
return 0;
}
--
1.8.3.1
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