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Tsirkin" , Zhu Lingshan , Stefano Garzarella , Xie Yongji , Eli Cohen , Si-Wei Liu , Parav Pandit , Longpeng , , , , Subject: [RFC PATCH v2 12/19] vhost-vdpa: introduce uAPI to get the number of address spaces Date: Fri, 25 Feb 2022 02:52:52 +0530 Message-ID: <20220224212314.1326-13-gdawar@xilinx.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20220224212314.1326-1-gdawar@xilinx.com> References: <20201216064818.48239-1-jasowang@redhat.com> <20220224212314.1326-1-gdawar@xilinx.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1bfa6b4a-5ce4-4083-57bc-08d9f7dc6b35 X-MS-TrafficTypeDiagnostic: SN6PR02MB5615:EE_ X-Microsoft-Antispam-PRVS: 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:149.199.62.198;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapexch01.xlnx.xilinx.com;PTR:unknown-62-198.xilinx.com;CAT:NONE;SFS:(13230001)(4636009)(40470700004)(36840700001)(46966006)(82310400004)(2616005)(47076005)(4326008)(1076003)(8676002)(109986005)(5660300002)(70586007)(36860700001)(70206006)(7416002)(356005)(7636003)(6666004)(83380400001)(8936002)(426003)(2906002)(26005)(44832011)(7696005)(316002)(9786002)(40460700003)(186003)(508600001)(36756003)(54906003)(336012)(102446001)(266003)(15583001);DIR:OUT;SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2022 21:27:11.2222 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1bfa6b4a-5ce4-4083-57bc-08d9f7dc6b35 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT055.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR02MB5615 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This patch introduces the uAPI for getting the number of address spaces supported by this vDPA device. Signed-off-by: Jason Wang Signed-off-by: Gautam Dawar --- drivers/vhost/vdpa.c | 3 +++ include/uapi/linux/vhost.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 7a8a99cef8a4..733b305c5029 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -542,6 +542,9 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep, r = copy_to_user(argp, &v->vdpa->ngroups, sizeof(v->vdpa->ngroups)); break; + case VHOST_VDPA_GET_AS_NUM: + r = copy_to_user(argp, &v->vdpa->nas, sizeof(v->vdpa->nas)); + break; case VHOST_SET_LOG_BASE: case VHOST_SET_LOG_FD: r = -ENOIOCTLCMD; diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index 8a4e6e426bbf..8762911a3cb8 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -148,4 +148,6 @@ /* Get the number of virtqueue groups. */ #define VHOST_VDPA_GET_GROUP_NUM _IOR(VHOST_VIRTIO, 0x79, unsigned int) +/* Get the number of address spaces. */ +#define VHOST_VDPA_GET_AS_NUM _IOR(VHOST_VIRTIO, 0x7A, unsigned int) #endif -- 2.25.0