From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Hajnoczi <stefanha@gmail.com>
Subject: Re: [PATCH RFC v6 10/20] s390x/virtio-ccw: add virtio set-revision
	call
Date: Tue, 20 Jan 2015 11:00:21 +0000
Message-ID: <20150120110021.GH17631@stefanha-thinkpad.redhat.com>
References: <1418304322-7546-1-git-send-email-cornelia.huck@de.ibm.com>
	<1418304322-7546-11-git-send-email-cornelia.huck@de.ibm.com>
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To: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: thuth@linux.vnet.ibm.com, mst@redhat.com, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org
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On Thu, Dec 11, 2014 at 02:25:12PM +0100, Cornelia Huck wrote:
> From: Thomas Huth <thuth@linux.vnet.ibm.com>
>=20
> Handle the virtio-ccw revision according to what the guest sets.
> When revision 1 is selected, we have a virtio-1 standard device
> with byteswapping for the virtio rings.
>=20
> When a channel gets disabled, we have to revert to the legacy behavior
> in case the next user of the device does not negotiate the revision 1
> anymore (e.g. the boot firmware uses revision 1, but the operating
> system only uses the legacy mode).
>=20
> Note that revisions > 0 are still disabled.
>=20
> Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
> ---
>  hw/s390x/virtio-ccw.c |   52 +++++++++++++++++++++++++++++++++++++++++++=
++++++
>  hw/s390x/virtio-ccw.h |    8 ++++++++
>  2 files changed, 60 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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