linux-kernel - Re: [PATCH v2 12/15] virtio

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Message-ID: <20141006174234.6c65d251.cornelia.huck@de.ibm.com>
Date:	Mon, 6 Oct 2014 17:42:34 +0200
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v2 12/15] virtio_blk: enable VQs early

On Mon, 6 Oct 2014 18:11:22 +0300
"Michael S. Tsirkin" <mst@...hat.com> wrote:

> virtio spec requires drivers to set DRIVER_OK before using VQs.
> This is set automatically after probe returns, virtio block violated this
> rule by calling add_disk, which causes the VQ to be used directly within
> probe.
> 
> To fix, call virtio_enable_vqs_early before using VQs.
> 
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
>  drivers/block/virtio_blk.c | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Cornelia Huck <cornelia.huck@...ibm.com>

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