From nobody Fri Dec 26 01:24:32 2025 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 BC9D8524D0 for ; Wed, 10 Jan 2024 20:40:42 +0000 (UTC) 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="Z4I/SpWy" 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 40AHu6Er013238; Wed, 10 Jan 2024 20:40:29 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=UhQmkXl9GVu7w+z1TCplSHMQcWUnpv9XttZYc9CaLWI=; b=Z4I/SpWyGdRErY15n9ByLfWec96Ujkt4wHnw7OGouauwqVVHz9v5a0lCcNadOlUEwkPy VmE1a7/3INCEp0XRVfi0mkK7zbU9mlnAS192WkBv/rmo3IcLK9UrXzPCCSqso0+iAHTl BN800/wBesdL58Gj4O+WnEJ9f9EDSyiVxIUd6twX1VLHmN7XZFnCKd0FDkWDUkLgzcnT gUb8Kd6ZrMsHfVAk4W6Ig7qtcejv1x5M8F3Az7TOVOXDrMe4oEHgZ0jVj60bndwqAkEu iBkrBhq31myp2UPqP5GfFQOPPDHLN5cDua9iPNWwdHvD/Qy+I5HZx/++JYrkadO6u6dr aA== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3vhs1x1b3p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jan 2024 20:40:28 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 40AK51Ds030094; Wed, 10 Jan 2024 20:40:27 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3vfutp5xdw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jan 2024 20:40:27 +0000 Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40AKeGrp005067; Wed, 10 Jan 2024 20:40:26 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3vfutp5x5e-14; Wed, 10 Jan 2024 20:40:26 +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 , Xuan Zhuo , Dragos Tatulea , Eli Cohen , Xie Yongji , Steve Sistare Subject: [RFC V1 13/13] vduse: new owner capability Date: Wed, 10 Jan 2024 12:40:15 -0800 Message-Id: <1704919215-91319-14-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1704919215-91319-1-git-send-email-steven.sistare@oracle.com> References: <1704919215-91319-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-10_10,2024-01-10_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 bulkscore=0 adultscore=0 phishscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401100163 X-Proofpoint-ORIG-GUID: qAWOh5yp6HJp_t3u4k72qvHhZf-98H8a X-Proofpoint-GUID: qAWOh5yp6HJp_t3u4k72qvHhZf-98H8a 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" The vduse device supports ownership transfer to a new process, so advertise VHOST_BACKEND_F_NEW_OWNER. User virtual addresses are used by the software iommu, so VHOST_IOTLB_REMAP is required after VHOST_NEW_OWNER, so advertise VHOST_BACKEND_F_IOTLB_REMAP. Signed-off-by: Steve Sistare --- drivers/vdpa/vdpa_user/vduse_dev.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vd= use_dev.c index 6b25457a037d..67815f6391db 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -608,6 +609,12 @@ static u32 vduse_vdpa_get_vq_align(struct vdpa_device = *vdpa) return dev->vq_align; } =20 +static u64 vduse_vdpa_get_backend_features(const struct vdpa_device *vdpa) +{ + return BIT_ULL(VHOST_BACKEND_F_IOTLB_REMAP) | + BIT_ULL(VHOST_BACKEND_F_NEW_OWNER); +} + static u64 vduse_vdpa_get_device_features(struct vdpa_device *vdpa) { struct vduse_dev *dev =3D vdpa_to_vduse(vdpa); @@ -801,6 +808,7 @@ static const struct vdpa_config_ops vduse_vdpa_config_o= ps =3D { .set_vq_state =3D vduse_vdpa_set_vq_state, .get_vq_state =3D vduse_vdpa_get_vq_state, .get_vq_align =3D vduse_vdpa_get_vq_align, + .get_backend_features =3D vduse_vdpa_get_backend_features, .get_device_features =3D vduse_vdpa_get_device_features, .set_driver_features =3D vduse_vdpa_set_driver_features, .get_driver_features =3D vduse_vdpa_get_driver_features, --=20 2.39.3