[Virtio-fs] [RFC PATCH] hw/virtio: introduce virtio_device_should_start

[Alex Bennée]

"Michael S. Tsirkin" <mst at redhat.com> writes:

> On Mon, Nov 07, 2022 at 12:14:07PM +0000, Alex Bennée wrote:
>> The previous fix to virtio_device_started revealed a problem in its
>> use by both the core and the device code. The core code should be able
>> to handle the device "starting" while the VM isn't running to handle
>> the restoration of migration state. To solve this duel use introduce a
>> new helper for use by the vhost-user backends who all use it to feed a
>> should_start variable.
>> 
>> We can also pick up a change vhost_user_blk_set_status while we are at
>> it which follows the same pattern.
>> 
>> Fixes: 9f6bcfd99f (hw/virtio: move vm_running check to virtio_device_started)
>> Signed-off-by: Alex Bennée <alex.bennee at linaro.org>
>> Cc: "Michael S. Tsirkin" <mst at redhat.com>
>
> Hi Alex, did you actually check this under gitlab CI?

It's had a clean pass as part of my for-7.2/misc-fixes branch but I've
been unable to replicate the crash it was meant to fix locally as of
yet.

  https://gitlab.com/stsquad/qemu/-/pipelines/687366712

-- 
Alex Bennée