From patchwork Fri Jul 12 14:02:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Sistare X-Patchwork-Id: 13731837 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CFBB6C2BD09 for ; Fri, 12 Jul 2024 14:04:41 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sSGrA-0001mJ-BA; Fri, 12 Jul 2024 10:02:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sSGr2-0001NU-Oe for qemu-devel@nongnu.org; Fri, 12 Jul 2024 10:02:34 -0400 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sSGr1-0005vQ-5V for qemu-devel@nongnu.org; Fri, 12 Jul 2024 10:02:32 -0400 Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 46CDIMrN023701; Fri, 12 Jul 2024 14:02:20 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=S9Iux9B0t0Qwr10Zwlv9f/aWAepqp3WhMb9It8eH5qo=; b= atijf7pARGfwIVEaO8ZsSHzNWTf4maTJx2XWw/SFMHJGESsgFyL6Z/jG2Ebihtpg bAGOO0jkiD35Vfi86fgI+DBENt7MfnBC09XIhFUdjljojcNMN7R81QIaUYgpGpu+ 0Ty5M/1yAYyP6xekUW6pDWcpCfWQVQ1yPEHBRy/c4BFaNKtDlMRHeWZ/X8SgClW3 qprUKWKxlOGhhetDqGbEJ4HFQaJuvPoP+baY2JHQgyoAmhh/QJlQZdLR6666sB/X lNokS91rJMr2ZGZ7+Dh0wBWluSrDXo0XUksni+SG9Ulke/2Aq/kXnax+eucRstfO KCoagVLjeS/pQ61hlAJFzA== Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 407emt37uk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 12 Jul 2024 14:02:19 +0000 (GMT) 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 46CCwLpM010887; Fri, 12 Jul 2024 14:02:19 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 409vv74jw4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 12 Jul 2024 14:02:19 +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 46CE2DPu020438; Fri, 12 Jul 2024 14:02:18 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 409vv74jq7-5; Fri, 12 Jul 2024 14:02:18 +0000 From: Steve Sistare To: qemu-devel@nongnu.org Cc: "Michael S. Tsirkin" , Jason Wang , Philippe Mathieu-Daude , Eugenio Perez Martin , Peter Xu , Fabiano Rosas , Si-Wei Liu , Steve Sistare Subject: [RFC V1 4/7] vdpa/cpr: kernel interfaces Date: Fri, 12 Jul 2024 07:02:08 -0700 Message-Id: <1720792931-456433-5-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1720792931-456433-1-git-send-email-steven.sistare@oracle.com> References: <1720792931-456433-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-12_10,2024-07-11_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 malwarescore=0 phishscore=0 spamscore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2406180000 definitions=main-2407120094 X-Proofpoint-GUID: a0OpHpbWmSD__iZJ8Vqiereq-MCnGA6Z X-Proofpoint-ORIG-GUID: a0OpHpbWmSD__iZJ8Vqiereq-MCnGA6Z Received-SPF: pass client-ip=205.220.177.32; envelope-from=steven.sistare@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add the proposed vdpa kernel interfaces for CPR: VHOST_NEW_OWNER: new ioctl VHOST_BACKEND_F_NEW_OWNER: new capability VHOST_IOTLB_REMAP: new iotlb message VHOST_BACKEND_F_IOTLB_REMAP: new capability Signed-off-by: Steve Sistare --- include/standard-headers/linux/vhost_types.h | 7 +++++++ linux-headers/linux/vhost.h | 9 +++++++++ 2 files changed, 16 insertions(+) diff --git a/include/standard-headers/linux/vhost_types.h b/include/standard-headers/linux/vhost_types.h index fd54044936..fa605ee1da 100644 --- a/include/standard-headers/linux/vhost_types.h +++ b/include/standard-headers/linux/vhost_types.h @@ -87,6 +87,7 @@ struct vhost_iotlb_msg { */ #define VHOST_IOTLB_BATCH_BEGIN 5 #define VHOST_IOTLB_BATCH_END 6 +#define VHOST_IOTLB_REMAP 7 uint8_t type; }; @@ -193,4 +194,10 @@ struct vhost_vdpa_iova_range { /* IOTLB don't flush memory mapping across device reset */ #define VHOST_BACKEND_F_IOTLB_PERSIST 0x8 +/* Supports VHOST_NEW_OWNER */ +#define VHOST_BACKEND_F_NEW_OWNER 0x9 + +/* Supports VHOST_IOTLB_REMAP */ +#define VHOST_BACKEND_F_IOTLB_REMAP 0xa + #endif diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h index b95dd84eef..6c008c956a 100644 --- a/linux-headers/linux/vhost.h +++ b/linux-headers/linux/vhost.h @@ -123,6 +123,15 @@ #define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64) #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64) +/* Set current process as the new owner of this file descriptor. The fd must + * already be owned, via a prior call to VHOST_SET_OWNER. The pinned memory + * count is transferred from the previous to the new owner. + * Errors: + * EINVAL: not owned + * EBUSY: caller is already the owner + * ENOMEM: RLIMIT_MEMLOCK exceeded + */ +#define VHOST_NEW_OWNER _IO(VHOST_VIRTIO, 0x27) /* VHOST_NET specific defines */ /* Attach virtio net ring to a raw socket, or tap device.