From nobody Fri Dec 26 01:24:33 2025 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) (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 ACF6750243 for ; Wed, 10 Jan 2024 20:40:40 +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="DHSE3yQK" Received: from pps.filterd (m0246627.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 40AJfjWG028143; Wed, 10 Jan 2024 20:40:26 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=hhvQOBFamiyiEmHuupz5eDq1YRqBcTmmT3w2YGrrD10=; b=DHSE3yQK/9Ol1yXpkKhUrTD9n7+DqGMPNsRbhSRvzLSx+yCGCwkmc19UoFXFNpDAONU5 qYTSVX/3tqhOVUfu0lyDm0KTHx9VhQ6639pG8QAokUSJkyYk415uSo/wji2qGXIXkiKe K96+ihbtESCeHPwOZeNmmLJjySnN2xw572lmeABrD/mvCMN+8IeRG5jcHrEzQAdFol90 KrActpbdXASCsew+2eyLiNrSpMtxFGWePKz72r/rWrRtzEt1YqQCNC2PqK180Z8dPkST KHXkq6x184vrozJJ/XAK7eDTzQpn4YPrw+Zpw0Xnr/FcqTcS6pG/g2Q8C7Fzl+NXVRTj Cw== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3vj1m404ad-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jan 2024 20:40:26 +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 40AJJe28030160; Wed, 10 Jan 2024 20:40:26 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3vfutp5xcu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jan 2024 20:40:26 +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 40AKeGrl005067; Wed, 10 Jan 2024 20:40:25 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-12; Wed, 10 Jan 2024 20:40:25 +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 11/13] vdpa/mlx5: new owner capability Date: Wed, 10 Jan 2024 12:40:13 -0800 Message-Id: <1704919215-91319-12-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: CLFuHUGjgvH2x-cylsNPOygAE-HFhxhe X-Proofpoint-GUID: CLFuHUGjgvH2x-cylsNPOygAE-HFhxhe 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 mlx5 vdpa device supports ownership transfer to a new process, so advertise VHOST_BACKEND_F_NEW_OWNER. User virtual addresses are not used after they are initially translated to physical, so VHOST_IOTLB_REMAP is not required, hence VHOST_BACKEND_F_IOTLB_REMAP is not advertised. Signed-off-by: Steve Sistare --- drivers/vdpa/mlx5/net/mlx5_vnet.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5= _vnet.c index 26ba7da6b410..26f24fb0e160 100644 --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -2562,7 +2562,8 @@ static void unregister_link_notifier(struct mlx5_vdpa= _net *ndev) =20 static u64 mlx5_vdpa_get_backend_features(const struct vdpa_device *vdpa) { - return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK); + return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK) | + BIT_ULL(VHOST_BACKEND_F_NEW_OWNER); } =20 static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 fea= tures) --=20 2.39.3