From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58D32C3A5A2 for ; Fri, 23 Aug 2019 11:48:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A86721848 for ; Fri, 23 Aug 2019 11:48:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393107AbfHWLss (ORCPT ); Fri, 23 Aug 2019 07:48:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55776 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392870AbfHWLss (ORCPT ); Fri, 23 Aug 2019 07:48:48 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6954C3090FC1; Fri, 23 Aug 2019 11:48:48 +0000 (UTC) Received: from gondolin (dhcp-192-222.str.redhat.com [10.33.192.222]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9C49E2636B; Fri, 23 Aug 2019 11:48:47 +0000 (UTC) Date: Fri, 23 Aug 2019 13:48:45 +0200 From: Cornelia Huck To: Eric Farman , Halil Pasic Cc: linux-s390@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH RFC 1/1] vfio-ccw: add some logging Message-ID: <20190823134845.1f7ce449.cohuck@redhat.com> In-Reply-To: <20190816151505.9853-2-cohuck@redhat.com> References: <20190816151505.9853-1-cohuck@redhat.com> <20190816151505.9853-2-cohuck@redhat.com> Organization: Red Hat GmbH MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Fri, 23 Aug 2019 11:48:48 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Fri, 16 Aug 2019 17:15:05 +0200 Cornelia Huck 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 > --- > 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.