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Tsirkin" , , , , Yuwei Zhang Subject: [PATCH 2/2] vhost-user: remove VirtQ notifier restore Date: Mon, 13 Sep 2021 00:20:14 +0800 Message-ID: <20210912162014.106704-3-xuemingl@nvidia.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210912162014.106704-1-xuemingl@nvidia.com> References: <20210912162014.106704-1-xuemingl@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [172.20.187.5] X-ClientProxiedBy: HQMAIL101.nvidia.com (172.20.187.10) To DRHQMAIL107.nvidia.com (10.27.9.16) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f700ef69-4f4a-4edd-8e8f-08d97609460d X-MS-TrafficTypeDiagnostic: BN8PR12MB2914: X-Microsoft-Antispam-PRVS: X-MS-Exchange-Transport-Forked: True X-MS-Oob-TLC-OOBClassifiers: OLM:102; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.112.35; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:schybrid02.nvidia.com; CAT:NONE; SFS:(4636009)(346002)(136003)(376002)(396003)(39860400002)(46966006)(36840700001)(5660300002)(47076005)(70586007)(7696005)(8936002)(7636003)(6666004)(70206006)(336012)(6286002)(55016002)(6916009)(426003)(86362001)(8676002)(1076003)(36756003)(2616005)(36860700001)(16526019)(82310400003)(186003)(478600001)(26005)(4326008)(36906005)(316002)(356005)(54906003)(2906002)(83380400001)(82740400003); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Sep 2021 16:20:45.0573 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f700ef69-4f4a-4edd-8e8f-08d97609460d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.35]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT031.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB2914 Received-SPF: softfail client-ip=40.107.223.73; envelope-from=xuemingl@nvidia.com; helo=NAM11-DM6-obe.outbound.protection.outlook.com X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.393, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @Nvidia.com) X-ZM-MESSAGEID: 1631463785231100001 Content-Type: text/plain; charset="utf-8" When vhost-user vdpa client restart, VQ notifier resources become invalid, no need to keep mmap, vdpa client will set VQ notifier after reconnect. Removes VQ notifier restore and related flags. Fixes: 44866521bd6e ("vhost-user: support registering external host notifie= rs") Cc: tiwei.bie@intel.com Cc: qemu-stable@nongnu.org Cc: Yuwei Zhang Signed-off-by: Xueming Li --- hw/virtio/vhost-user.c | 19 +------------------ include/hw/virtio/vhost-user.h | 1 - 2 files changed, 1 insertion(+), 19 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 58722ab27c..fc688db884 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1143,19 +1143,6 @@ static int vhost_user_set_vring_num(struct vhost_dev= *dev, return vhost_set_vring(dev, VHOST_USER_SET_VRING_NUM, ring); } =20 -static void vhost_user_host_notifier_restore(struct vhost_dev *dev, - int queue_idx) -{ - struct vhost_user *u =3D dev->opaque; - VhostUserHostNotifier *n =3D &u->user->notifier[queue_idx]; - VirtIODevice *vdev =3D dev->vdev; - - if (n->addr && !n->set) { - virtio_queue_set_host_notifier_mr(vdev, queue_idx, &n->mr, true); - n->set =3D true; - } -} - static void vhost_user_host_notifier_remove(struct vhost_dev *dev, int queue_idx) { @@ -1163,21 +1150,18 @@ static void vhost_user_host_notifier_remove(struct = vhost_dev *dev, VhostUserHostNotifier *n =3D &u->user->notifier[queue_idx]; VirtIODevice *vdev =3D dev->vdev; =20 - if (n->addr && n->set) { + if (n->addr) { virtio_queue_set_host_notifier_mr(vdev, queue_idx, &n->mr, false); /* Wait VM threads accessing old flatview which contains notifier.= */ drain_call_rcu(); munmap(n->addr, qemu_real_host_page_size); n->addr =3D NULL; - n->set =3D false; } } =20 static int vhost_user_set_vring_base(struct vhost_dev *dev, struct vhost_vring_state *ring) { - vhost_user_host_notifier_restore(dev, ring->index); - return vhost_set_vring(dev, VHOST_USER_SET_VRING_BASE, ring); } =20 @@ -1536,7 +1520,6 @@ static int vhost_user_slave_handle_vring_host_notifie= r(struct vhost_dev *dev, } =20 n->addr =3D addr; - n->set =3D true; =20 return 0; } diff --git a/include/hw/virtio/vhost-user.h b/include/hw/virtio/vhost-user.h index a9abca3288..f6012b2078 100644 --- a/include/hw/virtio/vhost-user.h +++ b/include/hw/virtio/vhost-user.h @@ -14,7 +14,6 @@ typedef struct VhostUserHostNotifier { MemoryRegion mr; void *addr; - bool set; } VhostUserHostNotifier; =20 typedef struct VhostUserState { --=20 2.33.0