This is a note to let you know that I've just added the patch titled xen-netback: respect user provided max_queues to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: xen-netback-respect-user-provided-max_queues.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Tue Jan 26 21:37:04 PST 2016 From: Wei Liu <wei.liu2@xxxxxxxxxx> Date: Thu, 10 Sep 2015 11:18:57 +0100 Subject: xen-netback: respect user provided max_queues From: Wei Liu <wei.liu2@xxxxxxxxxx> [ Upstream commit 4c82ac3c37363e8c4ded6a5fe1ec5fa756b34df3 ] Originally that parameter was always reset to num_online_cpus during module initialisation, which renders it useless. The fix is to only set max_queues to num_online_cpus when user has not provided a value. Reported-by: Johnny Strom <johnny.strom@xxxxxxxxxxxxxxxxx> Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx> Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/xen-netback/netback.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -2007,8 +2007,11 @@ static int __init netback_init(void) if (!xen_domain()) return -ENODEV; - /* Allow as many queues as there are CPUs, by default */ - xenvif_max_queues = num_online_cpus(); + /* Allow as many queues as there are CPUs if user has not + * specified a value. + */ + if (xenvif_max_queues == 0) + xenvif_max_queues = num_online_cpus(); if (fatal_skb_slots < XEN_NETBK_LEGACY_SLOTS_MAX) { pr_info("fatal_skb_slots too small (%d), bump it to XEN_NETBK_LEGACY_SLOTS_MAX (%d)\n", Patches currently in stable-queue which might be from wei.liu2@xxxxxxxxxx are queue-4.1/xen-netfront-update-num_queues-to-real-created.patch queue-4.1/xen-netback-respect-user-provided-max_queues.patch queue-4.1/xen-netfront-respect-user-provided-max_queues.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html