Messages in this thread | | | Date | Tue, 29 Oct 2013 22:44:56 -0400 (EDT) | Subject | Re: [PATCH net] virtio-net: correctly handle cpu hotplug notifier during resuming | From | David Miller <> |
| |
From: Jason Wang <jasowang@redhat.com> Date: Tue, 29 Oct 2013 15:11:07 +0800
> commit 3ab098df35f8b98b6553edc2e40234af512ba877 (virtio-net: don't respond to > cpu hotplug notifier if we're not ready) tries to bypass the cpu hotplug > notifier by checking the config_enable and does nothing is it was false. So it > need to try to hold the config_lock mutex which may happen in atomic > environment which leads the following warnings: ... > A correct fix is to unregister the hotcpu notifier during restore and register a > new one in resume. > > Reported-by: Fengguang Wu <fengguang.wu@intel.com> > Tested-by: Fengguang Wu <fengguang.wu@intel.com> > Cc: Wanlong Gao <gaowanlong@cn.fujitsu.com> > Cc: Rusty Russell <rusty@rustcorp.com.au> > Cc: Michael S. Tsirkin <mst@redhat.com> > Signed-off-by: Jason Wang <jasowang@redhat.com> > --- > This patch is needed for 3.8 and above.
Applied and queued up for -stable, thanks Jason.
| |