linux-kernel - Re: [PATCH v3 00/41] linux: towards virtio-1 guest support

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Message-ID: <20141124194831.252318e4.cornelia.huck@de.ibm.com>
Date:	Mon, 24 Nov 2014 19:48:31 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	linux-kernel@...r.kernel.org, David Miller <davem@...emloft.net>,
	rusty@....ibm.com, nab@...ux-iscsi.org, pbonzini@...hat.com
Subject: Re: [PATCH v3 00/41] linux: towards virtio-1 guest support

On Mon, 24 Nov 2014 13:52:32 +0200
"Michael S. Tsirkin" <mst@...hat.com> wrote:

> Based on patches by Cornelia Rusty and others, but
> with an API that should allow better static checking of code,
> and slightly more concervative changes in vring,net and blk.
> 
> Based on patches by Cornelia and others, but
> with an API that should allow better static checking of code,
> slightly more concervative changes in vring and drivers,
> and compatibility for existing drivers so that
> this series be applied before all drivers are converted.
> 
> virtio net,blk and scsi drivers have been converted.
> They now pass sparse without warnings.
> 
> net and blk patches have been tested on s390.

vring_transport_features() seems to knock off the version 1 bit (I
wonder why I did not see that before, maybe VIRTIO_TRANSPORT_F_END had
not been increased before?). If I add VIRTIO_F_VERSION_1 in this
function, virtio-net and virtio-blk seem to work fine with version 1 on
virtio-ccw (tested with my old virtio-1 qemu branch).

I'll try to do a bit of reviewing tomorrow.

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