From patchwork Mon Jul 3 07:15:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13299649 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.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 smtp.lore.kernel.org (Postfix) with ESMTPS id DE221EB64DD for ; Mon, 3 Jul 2023 07:29:53 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qGDz1-0006Ef-E6; Mon, 03 Jul 2023 03:28:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGDyz-0006EI-Ma for qemu-devel@nongnu.org; Mon, 03 Jul 2023 03:28:25 -0400 Received: from mga12.intel.com ([192.55.52.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGDyw-0003yC-UQ for qemu-devel@nongnu.org; Mon, 03 Jul 2023 03:28:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1688369302; x=1719905302; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mzmiumRbkMiqShyNMR0IULmYkTFgTraEzbJQDh209tg=; b=aOf+2vsI5UILEoWWpITVh38XOm1BIV2TuHeiD6GJywp2kRSw2yg2XI5+ OvD6T6zLhwVnYqMDIC7a6s+vZKoZKi25/OIvirmx/2T08lqXLVhbrHpD4 ExR2QSVmiGaMw8Ni3quY1E8gwo9oNLxuFZ1Ps3MAjsVfpyupIKO0baXQb LhF4AAdgLEnwTPmDKhcHDN1clqIDAU2Jmrg14Uedc4C7YT1qQXrFPYLbQ Jiv4N8fW8tQ4C3gf6joWYpyOIYnrV7WqbQj4UBUpyn06FmxICO1GH5dFG kDHGORJ9NYuGE2I1YgMJvCMPqxNPZISp0cx4r/fJmdyia6bRMAnFlmjUS w==; X-IronPort-AV: E=McAfee;i="6600,9927,10759"; a="342405675" X-IronPort-AV: E=Sophos;i="6.01,177,1684825200"; d="scan'208";a="342405675" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2023 00:28:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10759"; a="748058786" X-IronPort-AV: E=Sophos;i="6.01,177,1684825200"; d="scan'208";a="748058786" Received: from duan-server-s2600bt.bj.intel.com ([10.240.192.147]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2023 00:28:19 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, joao.m.martins@oracle.com, avihaih@nvidia.com, chao.p.peng@intel.com Subject: [PATCH v6 7/7] vfio/migration: Return bool type for vfio_migration_realize() Date: Mon, 3 Jul 2023 15:15:10 +0800 Message-Id: <20230703071510.160712-6-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230703071510.160712-1-zhenzhong.duan@intel.com> References: <20230703071510.160712-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.136; envelope-from=zhenzhong.duan@intel.com; helo=mga12.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Make vfio_migration_realize() adhere to the convention of other realize() callbacks(like qdev_realize) by returning bool instead of int. Suggested-by: Cédric Le Goater Suggested-by: Joao Martins Signed-off-by: Zhenzhong Duan Reviewed-by: Cédric Le Goater Reviewed-by: Joao Martins --- hw/vfio/migration.c | 15 ++++++++++----- hw/vfio/pci.c | 3 +-- include/hw/vfio/vfio-common.h | 2 +- 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index e3954570c853..2674f4bc472d 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -846,7 +846,12 @@ void vfio_reset_bytes_transferred(void) bytes_transferred = 0; } -int vfio_migration_realize(VFIODevice *vbasedev, Error **errp) +/* + * Return true when either migration initialized or blocker registered. + * Currently only return false when adding blocker fails which will + * de-register vfio device. + */ +bool vfio_migration_realize(VFIODevice *vbasedev, Error **errp) { Error *err = NULL; int ret; @@ -854,7 +859,7 @@ int vfio_migration_realize(VFIODevice *vbasedev, Error **errp) if (vbasedev->enable_migration == ON_OFF_AUTO_OFF) { error_setg(&err, "%s: Migration is disabled for VFIO device", vbasedev->name); - return vfio_block_migration(vbasedev, err, errp); + return !vfio_block_migration(vbasedev, err, errp); } ret = vfio_migration_init(vbasedev); @@ -869,7 +874,7 @@ int vfio_migration_realize(VFIODevice *vbasedev, Error **errp) vbasedev->name, ret, strerror(-ret)); } - return vfio_block_migration(vbasedev, err, errp); + return !vfio_block_migration(vbasedev, err, errp); } if (!vbasedev->dirty_pages_supported) { @@ -896,7 +901,7 @@ int vfio_migration_realize(VFIODevice *vbasedev, Error **errp) } trace_vfio_migration_realize(vbasedev->name); - return 0; + return true; add_blocker: ret = vfio_block_migration(vbasedev, err, errp); @@ -904,7 +909,7 @@ out_deinit: if (ret) { vfio_migration_deinit(vbasedev); } - return ret; + return !ret; } void vfio_migration_exit(VFIODevice *vbasedev) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index eefd4ec330d9..68dd99283620 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -3207,8 +3207,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) } if (!pdev->failover_pair_id) { - ret = vfio_migration_realize(vbasedev, errp); - if (ret) { + if (!vfio_migration_realize(vbasedev, errp)) { goto out_deregister; } } diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 45167c8a8a54..da43d273524e 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -252,7 +252,7 @@ int vfio_spapr_create_window(VFIOContainer *container, int vfio_spapr_remove_window(VFIOContainer *container, hwaddr offset_within_address_space); -int vfio_migration_realize(VFIODevice *vbasedev, Error **errp); +bool vfio_migration_realize(VFIODevice *vbasedev, Error **errp); void vfio_migration_exit(VFIODevice *vbasedev); #endif /* HW_VFIO_VFIO_COMMON_H */