From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:52817) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hG09L-000253-LD for qemu-devel@nongnu.org; Mon, 15 Apr 2019 07:51:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hG09K-0003fN-5z for qemu-devel@nongnu.org; Mon, 15 Apr 2019 07:51:47 -0400 Date: Mon, 15 Apr 2019 13:51:26 +0200 From: Cornelia Huck Message-ID: <20190415135126.2fa9b12b.cohuck@redhat.com> In-Reply-To: <20190301093902.27799-1-cohuck@redhat.com> References: <20190301093902.27799-1-cohuck@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v4 0/6] vfio-ccw: support hsch/csch (kernel part) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Halil Pasic , Eric Farman , Farhan Ali , Pierre Morel Cc: linux-s390@vger.kernel.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-s390x@nongnu.org, Alex Williamson On Fri, 1 Mar 2019 10:38:56 +0100 Cornelia Huck wrote: > [This is the Linux kernel part, git tree is available at > https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw.git vfio-ccw-eagain-caps-v3 > > The companion QEMU patches are available at > https://github.com/cohuck/qemu vfio-ccw-caps] > > Currently, vfio-ccw only relays START SUBCHANNEL requests to the real > device. This tends to work well for the most common 'good path' scenarios; > however, as we emulate {HALT,CLEAR} SUBCHANNEL in QEMU, things like > clearing pending requests at the device is currently not supported. > This may be a problem for e.g. error recovery. > > This patch series introduces capabilities (similar to what vfio-pci uses) > and exposes a new async region for handling hsch/csch. One more gentle ping for an ack/r-b for patches 4 and 6. I could go ahead and merge patches 1-3 and then patches 1+3 of Farhan's series, but I'd really like to merge patches 4-6 as well so I can later merge the QEMU part after a headers update to 5.2-rc... 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=-5.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS autolearn=unavailable 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 50BE5C10F0E for ; Mon, 15 Apr 2019 11:52:43 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23A612073F for ; Mon, 15 Apr 2019 11:52:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23A612073F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:48757 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hG0AE-0002Mx-GO for qemu-devel@archiver.kernel.org; Mon, 15 Apr 2019 07:52:42 -0400 Received: from eggs.gnu.org ([209.51.188.92]:52817) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hG09L-000253-LD for qemu-devel@nongnu.org; Mon, 15 Apr 2019 07:51:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hG09K-0003fN-5z for qemu-devel@nongnu.org; Mon, 15 Apr 2019 07:51:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45986) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hG09J-0003a1-Pf; Mon, 15 Apr 2019 07:51:46 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 73C3C66979; Mon, 15 Apr 2019 11:51:35 +0000 (UTC) Received: from gondolin (unknown [10.40.205.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id B96FE5C1B4; Mon, 15 Apr 2019 11:51:30 +0000 (UTC) Date: Mon, 15 Apr 2019 13:51:26 +0200 From: Cornelia Huck To: Halil Pasic , Eric Farman , Farhan Ali , Pierre Morel Message-ID: <20190415135126.2fa9b12b.cohuck@redhat.com> In-Reply-To: <20190301093902.27799-1-cohuck@redhat.com> References: <20190301093902.27799-1-cohuck@redhat.com> Organization: Red Hat GmbH MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Mon, 15 Apr 2019 11:51:40 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH v4 0/6] vfio-ccw: support hsch/csch (kernel part) X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, qemu-s390x@nongnu.org, Alex Williamson , qemu-devel@nongnu.org, kvm@vger.kernel.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Message-ID: <20190415115126.zf3pb7PLNSbmpgqmHOD0qIvx2M7EvO4w0dLid7lQFOs@z> On Fri, 1 Mar 2019 10:38:56 +0100 Cornelia Huck wrote: > [This is the Linux kernel part, git tree is available at > https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw.git vfio-ccw-eagain-caps-v3 > > The companion QEMU patches are available at > https://github.com/cohuck/qemu vfio-ccw-caps] > > Currently, vfio-ccw only relays START SUBCHANNEL requests to the real > device. This tends to work well for the most common 'good path' scenarios; > however, as we emulate {HALT,CLEAR} SUBCHANNEL in QEMU, things like > clearing pending requests at the device is currently not supported. > This may be a problem for e.g. error recovery. > > This patch series introduces capabilities (similar to what vfio-pci uses) > and exposes a new async region for handling hsch/csch. One more gentle ping for an ack/r-b for patches 4 and 6. I could go ahead and merge patches 1-3 and then patches 1+3 of Farhan's series, but I'd really like to merge patches 4-6 as well so I can later merge the QEMU part after a headers update to 5.2-rc...