From nobody Fri Dec 26 01:24:36 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 2E91C50265 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="AMF44scT" Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 40AIEJun001445; Wed, 10 Jan 2024 20:40:27 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=ikIw1YDf0Rr6UcV7EZ53FO7vqQLcCSbKuHARKKX1+Ec=; b=AMF44scTd1h/vOMAg4m/JXSD/W/oS5Br13EfU1SLMwmvZ1YhNVBQrPWsTg91CeLZpoY0 57HQElys8YxeiMJqOngCkrRj4S4jvpjqdbLWfPSt6scineUafGZmsc27MNEoToEFmDR6 ZRqXDJoB50Edt79HV1t6JRJMLaA7RrUzNSU/bG059Wcss2gNO4aPLyLJs4yXlXesGppM cOSByOs7GLMYBpXr9It70cE9Isv4TZ2VVzp8ywOlORhsJsxbjExVPenblLVdfX4TdyBm xvhBM89Ofqarae9dsjZG5Z3Qu9Db4Vvj2ieX5Z8qrHaExrc5zXOBraU12dqr4mZ8PWZp Fg== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3vhvgm8x6f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jan 2024 20:40:27 +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 40AJa7ar030210; 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 3vfutp5xd7-1 (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 40AKeGrn005067; 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-13; 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 12/13] vdpa_sim: new owner capability Date: Wed, 10 Jan 2024 12:40:14 -0800 Message-Id: <1704919215-91319-13-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-GUID: 2Hu1AOJmzavdJfK1M9mH4m5SRgKm8PAD X-Proofpoint-ORIG-GUID: 2Hu1AOJmzavdJfK1M9mH4m5SRgKm8PAD 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 vdpa_sim 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_sim/vdpa_sim.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_= sim.c index 8734834983cb..d037869d8a89 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -430,7 +430,13 @@ static u64 vdpasim_get_device_features(struct vdpa_dev= ice *vdpa) =20 static u64 vdpasim_get_backend_features(const struct vdpa_device *vdpa) { - return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK); + u64 features =3D BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK) | + BIT_ULL(VHOST_BACKEND_F_NEW_OWNER); + + if (use_va) + features +=3D BIT_ULL(VHOST_BACKEND_F_IOTLB_REMAP); + + return features; } =20 static int vdpasim_set_driver_features(struct vdpa_device *vdpa, u64 featu= res) --=20 2.39.3