On Thu, Dec 11, 2014 at 02:25:12PM +0100, Cornelia Huck wrote: > From: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx> > > 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. > > 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). > > Note that revisions > 0 are still disabled. > > Signed-off-by: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx> > --- > hw/s390x/virtio-ccw.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ > hw/s390x/virtio-ccw.h | 8 ++++++++ > 2 files changed, 60 insertions(+) Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
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