From nobody Tue Nov 26 08:46:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 170955566913872.04304331982007; Mon, 4 Mar 2024 04:34:29 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rh7Ra-0008E2-BH; Mon, 04 Mar 2024 07:29:22 -0500 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 1rh7RL-00084g-Jv for qemu-devel@nongnu.org; Mon, 04 Mar 2024 07:29:11 -0500 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rh7RJ-0004TK-RE for qemu-devel@nongnu.org; Mon, 04 Mar 2024 07:29:07 -0500 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4TpJ0D04z8z4wp0; Mon, 4 Mar 2024 23:29:00 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4TpJ090wLgz4wcK; Mon, 4 Mar 2024 23:28:56 +1100 (AEDT) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Peter Xu , Fabiano Rosas , Alex Williamson , Avihai Horon , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Markus Armbruster , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PATCH v3 02/26] vfio: Always report an error in vfio_save_setup() Date: Mon, 4 Mar 2024 13:28:20 +0100 Message-ID: <20240304122844.1888308-3-clg@redhat.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240304122844.1888308-1-clg@redhat.com> References: <20240304122844.1888308-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=mkh8=KK=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1709555669512100005 This will prepare ground for futur changes adding an Error** argument to the save_setup() handler. We need to make sure that on failure, vfio_save_setup() always sets a new error. Signed-off-by: C=C3=A9dric Le Goater Reviewed-by: Fabiano Rosas --- hw/vfio/migration.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 2050ac8897231ff89cc223f0570d5c7a65dede9e..51bea536cc290ba0aa393f78b01= 7b0650e333bff 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -383,6 +383,7 @@ static int vfio_save_setup(QEMUFile *f, void *opaque) VFIODevice *vbasedev =3D opaque; VFIOMigration *migration =3D vbasedev->migration; uint64_t stop_copy_size =3D VFIO_MIG_DEFAULT_DATA_BUFFER_SIZE; + int ret; =20 qemu_put_be64(f, VFIO_MIG_FLAG_DEV_SETUP_STATE); =20 @@ -397,13 +398,13 @@ static int vfio_save_setup(QEMUFile *f, void *opaque) } =20 if (vfio_precopy_supported(vbasedev)) { - int ret; - switch (migration->device_state) { case VFIO_DEVICE_STATE_RUNNING: ret =3D vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_P= RE_COPY, VFIO_DEVICE_STATE_RUNNING); if (ret) { + error_report("%s: Failed to set new RUNNING state", + vbasedev->name); return ret; } =20 @@ -414,6 +415,8 @@ static int vfio_save_setup(QEMUFile *f, void *opaque) /* vfio_save_complete_precopy() will go to STOP_COPY */ break; default: + error_report("%s: Invalid device state %d", vbasedev->name, + migration->device_state); return -EINVAL; } } @@ -422,7 +425,13 @@ static int vfio_save_setup(QEMUFile *f, void *opaque) =20 qemu_put_be64(f, VFIO_MIG_FLAG_END_OF_STATE); =20 - return qemu_file_get_error(f); + ret =3D qemu_file_get_error(f); + if (ret) { + error_report("%s: save setup failed : %s", vbasedev->name, + strerror(ret)); + } + + return ret; } =20 static void vfio_save_cleanup(void *opaque) --=20 2.44.0