[Xen-devel] [PATCH 1/1] xen-netfront: limit max queues number to online cpus

[Joe Jin <joe.jin@xxxxxxxxxx>]

Should not allocate queues number more than online cpus.

Signed-off-by: Joe Jin <joe.jin@xxxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
---
 drivers/net/xen-netfront.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index f821a97..1eebd4e 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -2137,7 +2137,7 @@ static int __init netif_init(void)
        /* Allow as many queues as there are CPUs if user has not
         * specified a value.
         */
-       if (xennet_max_queues == 0)
+       if (xennet_max_queues == 0 || xennet_max_queues > num_online_cpus())
                xennet_max_queues = num_online_cpus();
 
        return xenbus_register_frontend(&netfront_driver);
-- 
1.7.1


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