From: Stefan Hajnoczi <stefanha@gmail.com>
To: Greg Kurz <gkurz@linux.vnet.ibm.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
aneesh.kumar@linux.vnet.ibm.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 2/3] virtio-9p: add unrealize handler
Date: Tue, 6 Oct 2015 09:09:14 +0100 [thread overview]
Message-ID: <20151006080914.GB19089@stefanha-thinkpad> (raw)
In-Reply-To: <20151005090722.20420.71571.stgit@bahia.huguette.org>
On Mon, Oct 05, 2015 at 11:07:23AM +0200, Greg Kurz wrote:
> If the user tries to hot unplug a virtio-9p device, it seems to succeed but
> in fact:
> - virtio-9p coroutines thread pool and async queue are leaked
> - QEMU crashes in virtio_vmstate_change() if the user tries to live migrate
>
> This patch brings hot unplug support to virtio-9p-device. It fixes both
> above issues.
>
> Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
> ---
> hw/9pfs/virtio-9p-device.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
What happens to in-flight I/O requests? We cannot assume that the guest
driver quiesces the device.
next prev parent reply other threads:[~2015-10-06 8:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-05 9:07 [Qemu-devel] [PATCH 0/3] virtio-9p: hotplug and migration support Greg Kurz
2015-10-05 9:07 ` [Qemu-devel] [PATCH 1/3] virtio-9p-coth: add release function and fix init error path Greg Kurz
2015-10-06 9:16 ` Greg Kurz
2015-10-05 9:07 ` [Qemu-devel] [PATCH 2/3] virtio-9p: add unrealize handler Greg Kurz
2015-10-06 8:09 ` Stefan Hajnoczi [this message]
2015-10-06 9:13 ` Greg Kurz
2015-10-07 8:50 ` Aneesh Kumar K.V
2015-10-09 7:23 ` Greg Kurz
2015-10-09 7:36 ` Michael S. Tsirkin
2015-10-09 10:54 ` Greg Kurz
2015-10-05 9:07 ` [Qemu-devel] [PATCH 3/3] virtio-9p: add savem handlers Greg Kurz
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