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Tsirkin" , Jason Wang , Si-Wei Liu , Eugenio Perez Martin , Xie Yongji , Stefano Garzarella , Steve Sistare Subject: [PATCH V2 1/3] vhost-vdpa: flush workers on suspend Date: Mon, 12 Feb 2024 09:16:12 -0800 Message-Id: <1707758174-142161-2-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707758174-142161-1-git-send-email-steven.sistare@oracle.com> References: <1707758174-142161-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-12_14,2024-02-12_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402120131 X-Proofpoint-ORIG-GUID: c--00v5-y9I_0B3lmrLq1lXsXSRP_zgm X-Proofpoint-GUID: c--00v5-y9I_0B3lmrLq1lXsXSRP_zgm Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Flush to guarantee no workers are running when suspend returns. Signed-off-by: Steve Sistare Acked-by: Eugenio P=C3=A9rez --- drivers/vhost/vdpa.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index bc4a51e4638b..a3b986c24805 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -594,10 +594,13 @@ static long vhost_vdpa_suspend(struct vhost_vdpa *v) struct vdpa_device *vdpa =3D v->vdpa; const struct vdpa_config_ops *ops =3D vdpa->config; int ret; + struct vhost_dev *vdev =3D &v->vdev; =20 if (!ops->suspend) return -EOPNOTSUPP; =20 + vhost_dev_flush(vdev); + ret =3D ops->suspend(vdpa); if (!ret) v->suspended =3D true; --=20 2.39.3 From nobody Sun Feb 8 17:45:30 2026 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 80F653FB1C for ; Mon, 12 Feb 2024 17:16:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.177.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707758197; cv=none; b=X6jvWpnRZ4WUMCY1BfCabVLP29oIXCLurGJFWdzT0BhXQWWREJeqSD2tngBZUkCk/pPbXDE3Res0TQBw9Bo4PUlJgNDswIH6dg/HCYSkgEMXi10BHQPJFALLE8oWIjO3o4RTjL6+lgUYH7h+u9qdLT3F7eMSCmRxA+7uMvfiWg8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707758197; c=relaxed/simple; bh=Q6Yq07+VdvdKRo4K3In05WZjYT3GiDeEF2bQ46jl/XU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=sY1LNApNY87P8S0oYLesOnvv7BYR1dV0THLLgP3JRx5tkjQyfFswT4ytUqQJTQSyA9WE6DG0oe3oN6P0ljK1m/a1JQNGfVMJvn9GdcOLI96cU9TGDsRzgqp5dyspoXA/iDtaWPlz8Fa0LnAmFmY3dVO8FTU1mVyVN0O83nrh9Lo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=BnTgIY95; arc=none smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="BnTgIY95" Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41CFxpIS004867; Mon, 12 Feb 2024 17:16:19 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2023-11-20; bh=2Q4si0x3nG3VI9xSasdsfLDFx2lasKaM6lvaVLjk0wk=; b=BnTgIY95wjHStu21zgmfSgXIo9yUC3WUxQN1MJw0Wc0n4UP5jsS8Y6fsIO6iZhyBIP2m hxSVSp6lj5Lsn6OvvMlv88XBEYc0NjBSGTsCgRp7Gqbkgk514Dw0s0Xf/5P9IIRtGx9Y lOPyBce85Dok6vo2o7pbmxIH4SZ8W78lvBTqJ/BmvKD5SF5esStfOqWnY4ml73IFvSu/ oTNgfPA+dk1uydQetedhaLRtKKxkdxJH13DoL34tqugF1hk0q5j7ADSzCo3lUAydyjdA XuCdVyy/au597x4y7DX/NgGQLuQMgc8tBUeA/h2c4dtzvTwVYM+ZCnHSwlgoxbWXjz3N 4Q== Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3w7pf1r6yf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 12 Feb 2024 17:16:19 +0000 Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 41CGZllm031499; Mon, 12 Feb 2024 17:16:18 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3w5yk620f9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 12 Feb 2024 17:16:18 +0000 Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 41CHGFCC019216; Mon, 12 Feb 2024 17:16:18 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3w5yk620cq-3; Mon, 12 Feb 2024 17:16:18 +0000 From: Steve Sistare To: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , Si-Wei Liu , Eugenio Perez Martin , Xie Yongji , Stefano Garzarella , Steve Sistare Subject: [PATCH V2 2/3] vduse: suspend Date: Mon, 12 Feb 2024 09:16:13 -0800 Message-Id: <1707758174-142161-3-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707758174-142161-1-git-send-email-steven.sistare@oracle.com> References: <1707758174-142161-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-12_14,2024-02-12_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402120131 X-Proofpoint-ORIG-GUID: 52OpQkWopH_UijR_V1gH72otsGZlCUqw X-Proofpoint-GUID: 52OpQkWopH_UijR_V1gH72otsGZlCUqw Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Support the suspend operation. There is little to do, except flush to guarantee no workers are running when suspend returns. Signed-off-by: Steve Sistare --- drivers/vdpa/vdpa_user/vduse_dev.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vd= use_dev.c index 1d24da79c399..503030f19e52 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -472,6 +472,18 @@ static void vduse_dev_reset(struct vduse_dev *dev) up_write(&dev->rwsem); } =20 +static void vduse_flush_work(struct vduse_dev *dev) +{ + flush_work(&dev->inject); + + for (int i =3D 0; i < dev->vq_num; i++) { + struct vduse_virtqueue *vq =3D dev->vqs[i]; + + flush_work(&vq->inject); + flush_work(&vq->kick); + } +} + static int vduse_vdpa_set_vq_address(struct vdpa_device *vdpa, u16 idx, u64 desc_area, u64 driver_area, u64 device_area) @@ -713,6 +725,17 @@ static int vduse_vdpa_reset(struct vdpa_device *vdpa) return ret; } =20 +static int vduse_vdpa_suspend(struct vdpa_device *vdpa) +{ + struct vduse_dev *dev =3D vdpa_to_vduse(vdpa); 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Mon, 12 Feb 2024 17:16:20 +0000 Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 41CGHEXh031321; Mon, 12 Feb 2024 17:16:20 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3w5yk620g5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 12 Feb 2024 17:16:20 +0000 Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 41CHGFCE019216; Mon, 12 Feb 2024 17:16:19 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3w5yk620cq-4; Mon, 12 Feb 2024 17:16:19 +0000 From: Steve Sistare To: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , Si-Wei Liu , Eugenio Perez Martin , Xie Yongji , Stefano Garzarella , Steve Sistare Subject: [PATCH V2 3/3] vdpa_sim: flush workers on suspend Date: Mon, 12 Feb 2024 09:16:14 -0800 Message-Id: <1707758174-142161-4-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707758174-142161-1-git-send-email-steven.sistare@oracle.com> References: <1707758174-142161-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-12_14,2024-02-12_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402120131 X-Proofpoint-GUID: djMs8rQaCzFpOPn0bvE4a5muSqxH_YcW X-Proofpoint-ORIG-GUID: djMs8rQaCzFpOPn0bvE4a5muSqxH_YcW Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Flush to guarantee no workers are running when suspend returns. Signed-off-by: Steve Sistare --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_= sim.c index be2925d0d283..a662b90357c3 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -74,6 +74,17 @@ static void vdpasim_worker_change_mm_sync(struct vdpasim= *vdpasim, kthread_flush_work(work); } =20 +static void flush_work_fn(struct kthread_work *work) {} + +static void vdpasim_flush_work(struct vdpasim *vdpasim) +{ + struct kthread_work work; + + kthread_init_work(&work, flush_work_fn); + kthread_queue_work(vdpasim->worker, &work); + kthread_flush_work(&work); +} + static struct vdpasim *vdpa_to_sim(struct vdpa_device *vdpa) { return container_of(vdpa, struct vdpasim, vdpa); @@ -511,6 +522,8 @@ static int vdpasim_suspend(struct vdpa_device *vdpa) vdpasim->running =3D false; mutex_unlock(&vdpasim->mutex); =20 + vdpasim_flush_work(vdpasim); + return 0; } =20 --=20 2.39.3