Re: [PATCH RFC 1/1] vfio-ccw: add some logging

Cornelia Huck
2019-08-23T11:48:49Z

On Fri, 16 Aug 2019 17:15:05 +0200
Cornelia Huck <cohuck@redhat.com> wrote:

> Usually, the common I/O layer logs various things into the s390
> cio debug feature, which has been very helpful in the past when
> looking at crash dumps. As vfio-ccw devices unbind from the
> standard I/O subchannel driver, we lose some information there.
>
> Let's introduce some vfio-ccw debug features and log some things
> there. (Unfortunately we cannot reuse the cio debug feature from
> a module.)
>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> ---
> drivers/s390/cio/vfio_ccw_drv.c | 50 ++++++++++++++++++++++++++--
> drivers/s390/cio/vfio_ccw_fsm.c | 51 ++++++++++++++++++++++++++++-
> drivers/s390/cio/vfio_ccw_ops.c | 10 ++++++
> drivers/s390/cio/vfio_ccw_private.h | 17 ++++++++++
> 4 files changed, 124 insertions(+), 4 deletions(-)

Queued.