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SubjectRe: [RFC PATCH 01/24] vhost-vdpa: fix backend feature ioctls

On 2020/9/24 下午3:50, Michael S. Tsirkin wrote:
> On Thu, Sep 24, 2020 at 11:21:02AM +0800, Jason Wang wrote:
>> Commit 653055b9acd4 ("vhost-vdpa: support get/set backend features")
>> introduces two malfunction backend features ioctls:
>> 1) the ioctls was blindly added to vring ioctl instead of vdpa device
>> ioctl
>> 2) vhost_set_backend_features() was called when dev mutex has already
>> been held which will lead a deadlock
>> This patch fixes the above issues.
>> Cc: Eli Cohen<>
>> Reported-by: Zhu Lingshan<>
>> Fixes: 653055b9acd4 ("vhost-vdpa: support get/set backend features")
>> Signed-off-by: Jason Wang<>
> Don't we want the fixes queued right now, as opposed to the rest of the
> RFC?

Yes, actually I've posted in before[1].

Adding the patch here is to simplify the work for the guys that want to
do the work on top. E.g for Cindy to start the Qemu prototype.



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