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Re: [Qemu-devel] Regression: virtio-pci: convert to ioeventfd callbacks

From: Cornelia Huck
Subject: Re: [Qemu-devel] Regression: virtio-pci: convert to ioeventfd callbacks
Date: Mon, 27 Jun 2016 17:09:38 +0200

On Mon, 27 Jun 2016 11:44:47 +0200
Peter Lieven <address@hidden> wrote:

> Hi, with the above patch applied:
> commit 9f06e71a567ba5ee8b727e65a2d5347fd331d2aa
> Author: Cornelia Huck <address@hidden>
> Date:   Fri Jun 10 11:04:12 2016 +0200
>      virtio-pci: convert to ioeventfd callbacks
> a Ubuntu 14.04 VM freezes at startup when blk-mq is set up - even if there is 
> only one queue.

OK, I played around a bit with Stefan's block branch rebased upon
current master (and the conflict fixed up)... and I can't seem to hit
any error with virtio-ccw (will see if I find time to play around with
virtio-pci; but unless I've messed up, this should be the same code
path). VIRTIO_BLK_F_MQ is correctly negotiated if num_queues > 1, and I
can use the disk.

So, two questions:
- Which branch are you using? Any chance of a mis-merge there?
- Can you share the interesting portion of your command line?

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