From patchwork Mon Jul 5 16:39:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 12359439 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=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 B6EAFC07E99 for ; Mon, 5 Jul 2021 16:43:15 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5FE5861964 for ; Mon, 5 Jul 2021 16:43:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5FE5861964 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 ([::1]:47608 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0Rgg-00071e-Iq for qemu-devel@archiver.kernel.org; Mon, 05 Jul 2021 12:43:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48410) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0Rdf-00026n-Vk for qemu-devel@nongnu.org; Mon, 05 Jul 2021 12:40:09 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:52246) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0RdZ-0002Y4-Ux for qemu-devel@nongnu.org; Mon, 05 Jul 2021 12:40:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1625503199; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=Wct2MOq9qrlWpqCxAXXvkNta5BcA13V99bRfxRM+3ug=; b=PsLFmUxShg6DyTAnCbqhTVZ39lHy13T6gsM3Kid0bz4bQYOlcai3acAZPI3lF9Y26hUQFi IyAjGRuwrh0P1dSP6jyvy+fzvQpdAFQftDcwKohefpuxFwhGG/kaBhEWbL6Y3J6Oe5JLVj UJ3Vri6TibSY96uoXL+XDlUpqS3NCIE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-443-naWkCibUOE6-UgxPAMwk7w-1; Mon, 05 Jul 2021 12:39:58 -0400 X-MC-Unique: naWkCibUOE6-UgxPAMwk7w-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D6FAA804144; Mon, 5 Jul 2021 16:39:56 +0000 (UTC) Received: from gondolin.fritz.box (ovpn-112-39.ams2.redhat.com [10.36.112.39]) by smtp.corp.redhat.com (Postfix) with ESMTP id 50ABE60877; Mon, 5 Jul 2021 16:39:55 +0000 (UTC) From: Cornelia Huck To: Eric Farman , Matthew Rosato , Halil Pasic Subject: [PATCH v2 0/2] s390x: improve subchannel error handling (vfio) Date: Mon, 5 Jul 2021 18:39:50 +0200 Message-Id: <20210705163952.736020-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=cohuck@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=cohuck@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.442, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Cornelia Huck , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is a followup on the first version (which I had sent out in May, and which kind of fell through the cracks.) While the first patch is mostly unchanged, I added a second patch to address some possible problems with the generated unit exceptions; non-vfio subchannels are not affected by this. As before, this works on the good path, and I have not managed to actually get my system to exercise the error path :( v1->v2: - add comments regarding -ENODEV/-EACCES handling - add second patch Cornelia Huck (2): vfio-ccw: forward halt/clear errors css: fix actl handling for unit exceptions hw/s390x/css.c | 38 ++++++++++++++++++++++++++++++++++---- hw/vfio/ccw.c | 4 ++-- include/hw/s390x/css.h | 3 ++- 3 files changed, 38 insertions(+), 7 deletions(-) Tested-by: Jared Rossi Reviewed-by: Matthew Rosato