Re: [Qemu-devel] [qemu-s390x] [PATCH 2/2] s390x/ccw: make sure all ccw devices are properly reset

[Cornelia Huck]

On Tue, 8 May 2018 09:17:08 +0200
Christian Borntraeger <address@hidden> wrote:

> ACK.
> 
> cc stable?

Probably. We'd also need patch 1 for that.

> 
> 
> 
> On 05/07/2018 05:51 PM, Cornelia Huck wrote:
> > Thomas reported that the subchannel for a  3270 device that ended up
> > in a broken state (status pending even though not enabled) did not
> > get out of that state even after a reboot (which involves a subsytem
> > reset). The reason for this is that the 3270 device did not define
> > a reset handler.
> > 
> > Let's fix this by introducing a base reset handler (set up for all
> > ccw devices) that resets the subchannel and have virtio-ccw call
> > its virtio-specific reset procedure in addition to that.
> > 
> > Reported-by: Thomas Huth <address@hidden>
> > Suggested-by: Christian Borntraeger <address@hidden>
> > Signed-off-by: Cornelia Huck <address@hidden>
> > ---
> >  hw/s390x/ccw-device.c | 8 ++++++++
> >  hw/s390x/virtio-ccw.c | 9 ++++++---
> >  hw/s390x/virtio-ccw.h | 1 +
> >  3 files changed, 15 insertions(+), 3 deletions(-)