| Message ID | 20231219180858.120898-4-dtatulea@nvidia.com |
|---|---|
| State | New |
| Headers |
Return-Path: <linux-kernel+bounces-5776-ouuuleilei=gmail.com@vger.kernel.org>
Delivered-To: ouuuleilei@gmail.com
Received: by 2002:a05:7300:24d3:b0:fb:cd0c:d3e with SMTP id r19csp2135142dyi;
Tue, 19 Dec 2023 10:21:14 -0800 (PST)
X-Google-Smtp-Source:
AGHT+IHtBudGliXzI7PUeVbRzSFQZhzRFXhv6x80otHfevScEx3+PvNtcu34lEnrpK6gQ3XWYjB2
X-Received: by 2002:a2e:b8ca:0:b0:2cc:8b0b:ebb8 with SMTP id
s10-20020a2eb8ca000000b002cc8b0bebb8mr48294ljp.204.1703010074021;
Tue, 19 Dec 2023 10:21:14 -0800 (PST)
ARC-Seal: i=2; a=rsa-sha256; t=1703010073; cv=pass;
d=google.com; s=arc-20160816;
b=oSbKbS0pRTYUUIJh/AB4VEqDd4o2dyJO0jcTW78AkR80g99bTM0DzXzmKPuAX/J4aM
aZJKJRLVFKaKJb/xDXu7YwNlVDTbblL5xd+MWtb9AiSLQvV3RFSbicHdgzDnljV7F6Z5
v81PqWOIRgss+1tWLvwolDqAgXFNUNxgXrdIZHZK8EolAERgyQdEatkkiohqSlGtaE8k
rhFdJRVA5NaSFP7i5ksVmuuz3WidKfcgnzjqF3/pKyLhzR37FLbu+Xppq0mPFixZgcpM
7724cjzyp1BtDeRUQwUomkBPR0k9aeTt6F3Wuzva7eVHJiziW79MeNMiaeOtzxpghNvn
id+A==
ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com;
s=arc-20160816;
h=content-transfer-encoding:mime-version:list-unsubscribe
:list-subscribe:list-id:precedence:references:in-reply-to:message-id
:date:subject:cc:to:from:dkim-signature;
bh=vu78OW1bcKc+D9aGItF8zsUN18eG6wRMeld+vpa5LW0=;
fh=IC8CtaUsCHH+VLkdER9IbUix5yCQzPbBUzKtIdyo0ag=;
b=VfIr8L4QgOrENVpNp1IX31wx717J60ykWdu8GBFlqd6pN4w0Xp+mUvdJsocR31WwXP
RVpKHLqi6zdnsgeorPnQHU+8fe1dsCUCOYZw+k9iqegXXM+xStIlP2a5hKjWemsEEtx4
tgZiIV4UgkiLSCW2+FB0rafvKI4ONNxyn4RqZZMs8jN8ogyx7XkTLax9HSIW1LBK107T
f+0R3mSh0JMNbOldv/aSpgBatjzRvyZY5hdC5zZXdLthvsr/hb95p/jBtKIuz3VrFXpP
yKIK6nWsYDMor+ddBub2aMHIATjuekedpvig4guuak/W40pWbKxUFL7xypIUARcCArdM
YROg==
ARC-Authentication-Results: i=2; mx.google.com;
dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=dpW7youp;
arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass
fromdomain=nvidia.com);
spf=pass (google.com: domain of
linux-kernel+bounces-5776-ouuuleilei=gmail.com@vger.kernel.org designates
2604:1380:4601:e00::3 as permitted sender)
smtp.mailfrom="linux-kernel+bounces-5776-ouuuleilei=gmail.com@vger.kernel.org";
dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com
Received: from am.mirrors.kernel.org (am.mirrors.kernel.org.
[2604:1380:4601:e00::3])
by mx.google.com with ESMTPS id
x41-20020a50baac000000b005523033e9d2si5852674ede.409.2023.12.19.10.21.13
for <ouuuleilei@gmail.com>
(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
Tue, 19 Dec 2023 10:21:13 -0800 (PST)
Received-SPF: pass (google.com: domain of
linux-kernel+bounces-5776-ouuuleilei=gmail.com@vger.kernel.org designates
2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Authentication-Results: mx.google.com;
dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=dpW7youp;
arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass
fromdomain=nvidia.com);
spf=pass (google.com: domain of
linux-kernel+bounces-5776-ouuuleilei=gmail.com@vger.kernel.org designates
2604:1380:4601:e00::3 as permitted sender)
smtp.mailfrom="linux-kernel+bounces-5776-ouuuleilei=gmail.com@vger.kernel.org";
dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com
Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org
[52.25.139.140])
(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by am.mirrors.kernel.org (Postfix) with ESMTPS id DA5F11F29C35
for <ouuuleilei@gmail.com>; Tue, 19 Dec 2023 18:11:41 +0000 (UTC)
Received: from localhost.localdomain (localhost.localdomain [127.0.0.1])
by smtp.subspace.kernel.org (Postfix) with ESMTP id E51CD3D0C3;
Tue, 19 Dec 2023 18:09:39 +0000 (UTC)
Authentication-Results: smtp.subspace.kernel.org;
dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com
header.b="dpW7youp"
X-Original-To: linux-kernel@vger.kernel.org
Received: from NAM10-DM6-obe.outbound.protection.outlook.com
(mail-dm6nam10on2089.outbound.protection.outlook.com [40.107.93.89])
(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 26A723B194;
Tue, 19 Dec 2023 18:09:34 +0000 (UTC)
Authentication-Results: smtp.subspace.kernel.org;
dmarc=pass (p=reject dis=none) header.from=nvidia.com
Authentication-Results: smtp.subspace.kernel.org;
spf=fail smtp.mailfrom=nvidia.com
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none;
b=ebQZEu+WspDP1QYSfz0NnSQ6Kmlyx2BIOznSNVTJzG1L9ffwdGWpk4thDfgz3kOtDTpms9pgAv3rucU5kKuooYc1XNmiyrm0dT2booetnuDHg9F3FJH8GwvJjl38peRrSFsMFe+naaUcZPKRM5iyHXwB/dajMqLk1vJt6me6eu9mLDWbElXUVYp4QY9eD8svzmxnSzTCXNtgMQpFAYagmVhsXvAMLtmOn+E+5zCI5e7z3lKB6XhqXMyshBmCNVoGAgWZJxXe44TNX4ggFasT4ap1grbL94msJSwQjd7tudUTmtpcppsTXE23x4naSvJLrVFDD5qbGfMzeV9g/YN3nA==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;
s=arcselector9901;
h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1;
bh=vu78OW1bcKc+D9aGItF8zsUN18eG6wRMeld+vpa5LW0=;
b=lMbqt7V6fzUUWDy4La4epikpUNAuDR6p8T34EuZcd1WIaKgUyWtwUifzp42p95a/CwoFkAD4sO0uANuSFyZP6tcNwb90d4l7tRlTzZif+b+MS1z048jA46wSz6pKpSv5EEMJ+6y3xUFAslSJ5/8MXxzSkWA/X3er/LbJvQsZkqTrT5m+FD7di2pYTb+s2j8FtSBX+esJ0mlN6niFAnRJiYgkTMtiQYEwWHhO2RloX8QBLjTZNVX7PRP5i1IZZuJhjl00ts0wRr6rt+FTSfELGEhcrH3D7QK+fuLYiCj50e5Afilcvb1QvY/bwYpBBjcRfwvIKw4L1YKGclSGW2/Bkw==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is
216.228.117.161) smtp.rcpttodomain=redhat.com smtp.mailfrom=nvidia.com;
dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com;
dkim=none (message not signed); arc=none (0)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com;
s=selector2;
h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
bh=vu78OW1bcKc+D9aGItF8zsUN18eG6wRMeld+vpa5LW0=;
b=dpW7youp2vJFWKKGbVx2/ggJ6/JJC9xSTXgX3rGmN0UncB8HReT/IjhQ8kJ3l5CD9anZlDO2mozIFgOG5nkb9DSYfyuYXXW18lkwhSr/HvNSAxYL4J9Hket43AHjJBfzFM/QEw/MfcL6fCJUtHhKTGeX7ZpDGR0dIAf5R5Lwr4dFYGrHpoqv/qWh2l2bOkpTOCe5YVvt9ahv0ivTausimWI1LU3GTs9/5chptyzp5xuSDH7gl7sQIcIaW1WLPZDGvDbbVyayfM+tXn2OPBWX7NfviE2dOUUJ3mYribUAGNZBsnSW5hPe6NP5b1V/bWUIVKk6RZRaNmY1sPfkpwsVjQ==
Received: from BL1P221CA0017.NAMP221.PROD.OUTLOOK.COM (2603:10b6:208:2c5::35)
by SA3PR12MB7922.namprd12.prod.outlook.com (2603:10b6:806:314::12) with
Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7091.38; Tue, 19 Dec
2023 18:09:32 +0000
Received: from BL6PEPF0001AB72.namprd02.prod.outlook.com
(2603:10b6:208:2c5:cafe::a4) by BL1P221CA0017.outlook.office365.com
(2603:10b6:208:2c5::35) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7113.18 via Frontend
Transport; Tue, 19 Dec 2023 18:09:32 +0000
X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161)
smtp.mailfrom=nvidia.com; dkim=none (message not signed)
header.d=none;dmarc=pass action=none header.from=nvidia.com;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
216.228.117.161 as permitted sender) receiver=protection.outlook.com;
client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C
Received: from mail.nvidia.com (216.228.117.161) by
BL6PEPF0001AB72.mail.protection.outlook.com (10.167.242.165) with Microsoft
SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
15.20.7113.14 via Frontend Transport; Tue, 19 Dec 2023 18:09:31 +0000
Received: from rnnvmail205.nvidia.com (10.129.68.10) by mail.nvidia.com
(10.129.200.67) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 19 Dec
2023 10:09:17 -0800
Received: from rnnvmail205.nvidia.com (10.129.68.10) by rnnvmail205.nvidia.com
(10.129.68.10) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 19 Dec
2023 10:09:17 -0800
Received: from c-237-113-220-225.mtl.labs.mlnx (10.127.8.12) by
mail.nvidia.com (10.129.68.10) with Microsoft SMTP Server id 15.2.986.41 via
Frontend Transport; Tue, 19 Dec 2023 10:09:13 -0800
From: Dragos Tatulea <dtatulea@nvidia.com>
To: "Michael S . Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>,
Eugenio Perez Martin <eperezma@redhat.com>, Si-Wei Liu
<si-wei.liu@oracle.com>, Saeed Mahameed <saeedm@nvidia.com>, Leon Romanovsky
<leon@kernel.org>, <virtualization@lists.linux-foundation.org>, Gal Pressman
<gal@nvidia.com>
CC: Dragos Tatulea <dtatulea@nvidia.com>, <kvm@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, Parav Pandit <parav@nvidia.com>, Xuan Zhuo
<xuanzhuo@linux.alibaba.com>
Subject: [PATCH vhost v4 03/15] vdpa: Add
VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND flag
Date: Tue, 19 Dec 2023 20:08:46 +0200
Message-ID: <20231219180858.120898-4-dtatulea@nvidia.com>
X-Mailer: git-send-email 2.42.0
In-Reply-To: <20231219180858.120898-1-dtatulea@nvidia.com>
References: <20231219180858.120898-1-dtatulea@nvidia.com>
Precedence: bulk
X-Mailing-List: linux-kernel@vger.kernel.org
List-Id: <linux-kernel.vger.kernel.org>
List-Subscribe: <mailto:linux-kernel+subscribe@vger.kernel.org>
List-Unsubscribe: <mailto:linux-kernel+unsubscribe@vger.kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
X-NV-OnPremToCloud: ExternallySecured
X-EOPAttributedMessage: 0
X-MS-PublicTrafficType: Email
X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB72:EE_|SA3PR12MB7922:EE_
X-MS-Office365-Filtering-Correlation-Id: 32a3734e-99f7-4866-031d-08dc00bda66d
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:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(346002)(396003)(136003)(376002)(39860400002)(230922051799003)(1800799012)(451199024)(82310400011)(186009)(64100799003)(46966006)(36840700001)(40470700004)(40460700003)(40480700001)(6666004)(426003)(1076003)(86362001)(2906002)(4744005)(2616005)(5660300002)(66574015)(336012)(83380400001)(7636003)(356005)(26005)(47076005)(36860700001)(82740400003)(316002)(110136005)(4326008)(36756003)(54906003)(41300700001)(6636002)(478600001)(8936002)(70206006)(8676002)(70586007);DIR:OUT;SFP:1101;
X-OriginatorOrg: Nvidia.com
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Dec 2023 18:09:31.8873
(UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id:
32a3734e-99f7-4866-031d-08dc00bda66d
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp:
TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource:
BL6PEPF0001AB72.namprd02.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB7922
X-getmail-retrieved-from-mailbox: INBOX
X-GMAIL-THRID: 1785735491042988502
X-GMAIL-MSGID: 1785735491042988502
|
| Series |
vdpa/mlx5: Add support for resumable vqs
|
|
Commit Message
Dragos Tatulea
Dec. 19, 2023, 6:08 p.m. UTC
The virtio spec doesn't allow changing virtqueue state after
DRIVER_OK. Some devices do support this operation when the device is
suspended. The VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND flag
advertises this support as a backend features.
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Suggested-by: Eugenio Pérez <eperezma@redhat.com>
---
include/uapi/linux/vhost_types.h | 4 ++++
1 file changed, 4 insertions(+)
Comments
On Tue, Dec 19, 2023 at 7:09 PM Dragos Tatulea <dtatulea@nvidia.com> wrote: > > The virtio spec doesn't allow changing virtqueue state after > DRIVER_OK. Some devices do support this operation when the device is > suspended. The VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND flag > advertises this support as a backend features. > > Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> > Suggested-by: Eugenio Pérez <eperezma@redhat.com> > --- > include/uapi/linux/vhost_types.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/include/uapi/linux/vhost_types.h b/include/uapi/linux/vhost_types.h > index aacd067afc89..848dadc95ca1 100644 > --- a/include/uapi/linux/vhost_types.h > +++ b/include/uapi/linux/vhost_types.h > @@ -196,5 +196,9 @@ struct vhost_vdpa_iova_range { > * and is in state DRIVER_OK. > */ > #define VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND 0x9 > +/* Device supports changing virtqueue state when device is suspended > + * and is in state DRIVER_OK. > + */ > +#define VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND 0x10 Acked-by: Eugenio Pérez <eperezma@redhat.com> It would be great to find a shorter ID but I'm very bad at naming :(. Maybe it is ok to drop the _BACKEND_ word? I'm ok with carrying the acked-by if so. Thanks! > > #endif > -- > 2.43.0 >
diff --git a/include/uapi/linux/vhost_types.h b/include/uapi/linux/vhost_types.h index aacd067afc89..848dadc95ca1 100644 --- a/include/uapi/linux/vhost_types.h +++ b/include/uapi/linux/vhost_types.h @@ -196,5 +196,9 @@ struct vhost_vdpa_iova_range { * and is in state DRIVER_OK. */ #define VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND 0x9 +/* Device supports changing virtqueue state when device is suspended + * and is in state DRIVER_OK. + */ +#define VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND 0x10 #endif