From: "Zhangjie (HZ)" <zhangjie14@huawei.com>
To: Jason Wang <jasowang@redhat.com>, mst@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] vhost_net: start/stop guest notifiers properly
Date: Mon, 18 Aug 2014 20:11:38 +0800 [thread overview]
Message-ID: <53F1ED7A.5060900@huawei.com> (raw)
In-Reply-To: <1408355491-42089-1-git-send-email-jasowang@redhat.com>
On 2014/8/18 17:51, Jason Wang wrote:
> commit a9f98bb5ebe6fb1869321dcc58e72041ae626ad8 vhost: multiqueue
> support changed the order of stopping the device. Previously
> vhost_dev_stop would disable backend and only afterwards, unset guest
> notifiers. We now unset guest notifiers while vhost is still
> active. This can lose interrupts causing guest networking to fail.
>
> Additionally, remove the hdev->started assert in vhost.c since we may
> want to start the guest notifiers before vhost starts and stop the
> guest notifiers after vhost is stopped.
>
> In particular, this has been observed during migration.
>
Thanks! I will have a test about your patch today! :-)
--
Best Wishes!
Zhang Jie
next prev parent reply other threads:[~2014-08-18 12:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-18 9:51 [Qemu-devel] [PATCH] vhost_net: start/stop guest notifiers properly Jason Wang
2014-08-18 12:11 ` Zhangjie (HZ) [this message]
2014-08-19 2:46 ` Jason Wang
2014-08-18 13:20 ` William Dauchy
2014-08-19 2:48 ` Jason Wang
2014-08-18 19:53 ` Michael S. Tsirkin
2014-08-19 2:49 ` Jason Wang
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