From patchwork Thu Jun 11 13:40:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 1307573 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=kaod.org 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 ozlabs.org (Postfix) with ESMTPS id 49jQ3j6xSGz9sRW for ; Thu, 11 Jun 2020 23:40:49 +1000 (AEST) Received: from localhost ([::1]:54920 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jjNRn-0004AF-Ik for incoming@patchwork.ozlabs.org; Thu, 11 Jun 2020 09:40:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44340) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjNRF-00047w-I9 for qemu-devel@nongnu.org; Thu, 11 Jun 2020 09:40:13 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:53287 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jjNRE-0005lg-Oi for qemu-devel@nongnu.org; Thu, 11 Jun 2020 09:40:13 -0400 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-427-MnhOSny6MQa47NQFl6NZ6Q-1; Thu, 11 Jun 2020 09:40:07 -0400 X-MC-Unique: MnhOSny6MQa47NQFl6NZ6Q-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B9C2D8018A6; Thu, 11 Jun 2020 13:40:05 +0000 (UTC) Received: from bahia.lan (ovpn-114-202.ams2.redhat.com [10.36.114.202]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5C1F960BF3; Thu, 11 Jun 2020 13:40:04 +0000 (UTC) Subject: [PATCH v3 0/4] spapr: Improve error reporting in spapr_caps.c From: Greg Kurz To: David Gibson Date: Thu, 11 Jun 2020 15:40:03 +0200 Message-ID: <159188280345.70166.14940592691021389043.stgit@bahia.lan> User-Agent: StGit/0.21 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kaod.org Received-SPF: softfail client-ip=207.211.31.120; envelope-from=groug@kaod.org; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 08:37:10 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=_AUTOLEARN 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: Laurent Vivier , Vladimir Sementsov-Ogievskiy , qemu-ppc@nongnu.org, qemu-devel@nongnu.org, Markus Armbruster Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Spapr capabilities are checked at machine init. If a capability cannot be used, an error message is printed and QEMU exits. In most places, the error message also contains an hint for the user. But we should use error_append_hint() for that, as explained in the "qapi/error.h" header. This is already the case for cap_fwnmi_apply() and we now want to add a similar check for nested KVM-HV. Unfortunately, spapr_caps_apply() passes &error_fatal to all apply hooks and error_append_hint() is never called. So this reuses previous work from Vladimir Sementsov-Ogievskiy to address that. v3: - Add preliminary patch to use warn_report() instead of a convoluted error_setg()+warn_report_err() sequence v2: - Fix indentation and add some missing \n in patch 2 - Add ERRP_AUTO_PROPAGATE() to cap_nested_kvm_hv_apply() in patch 2 instead of patch 3 --- Greg Kurz (3): spapr: Simplify some warning printing paths in spapr_caps.c spapr: Use error_append_hint() in spapr_caps.c spapr: Forbid nested KVM-HV in pre-power9 compat mode Vladimir Sementsov-Ogievskiy (1): error: auto propagated local_err hw/ppc/spapr_caps.c | 127 ++++++++++++++++--------------- include/qapi/error.h | 205 ++++++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 239 insertions(+), 93 deletions(-) -- Greg