From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 573AEC5DF97 for ; Sat, 22 Aug 2026 20:27:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:CC:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tWRENgTOsPYvmo7Z5UzYHRSiUSBfxxS3AoboGFqA/hA=; b=TV4OnopxrihJUJ/q13VSIfl00o WFL9PqGiwJJZWGhmlyUsSpSR50xObQ9s3YQYePgIKOWjX3AIKzTz/W9Ubd8Bo+9IUwNs6rUWpStvi pjo2SYPLrA4Edf6LaJ1FZmEcXgBfdQznSBiq6ziXeomDriFcncAux3mFSw/MbbdmHcwm3jDtMthpA lcdXdeMQMM10XNdnhRmhSZfk4qgW4/cjWR6GUtX4W/4bvMAYjKrM2dwiM2Dny+MSRibwG8zUIslHC UCWnkozJq1PssPBk82+evdyyG9lUUd1+F50gETZrjzJTF8Gtq8TvQxdW+yCBcqsPbNoxHU74/+sDB DAL8EESw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wxsJ9-0000000EmUQ-1SQe; Sat, 22 Aug 2026 20:27:15 +0000 Received: from mail-westcentralusazon11010031.outbound.protection.outlook.com ([40.93.198.31] helo=CY7PR03CU001.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wxsJ6-0000000EmU0-2qkR for linux-arm-kernel@lists.infradead.org; Sat, 22 Aug 2026 20:27:14 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=t7nlH4etPUHk0PlMKk0mKYlJuFalfH+AeSxHxkmdmD35jaDnTONbHI4bqaTM9u42jmNItXrRnT+PtW5ZnUvw+7GooNLc8IA9kXreuNm0BrkyFAS4SJmuHN7IXB/PzRn1ZzccC4GGvSCrtAoCP+kzl6jHWBZFOL+vqcuZmm1eepPQr9DwP4yUNxzVmPlhyKg496Tzw0UxNsajsBU6XyckMJGh3ZWSdPUtU9sWhwRYfpiIVn5laVNvayEuvGbclVJnbGp0u5tmVX27fXhXzbp2dzKy8lu9kSQTqHpaTj5jBtlF8cYpnZARn6e0J/SNU/8eZt2/q1jOhm64uNcmXy1b1g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=tWRENgTOsPYvmo7Z5UzYHRSiUSBfxxS3AoboGFqA/hA=; b=ljsQXGjjWQr767nDFYRHAFkyeOGHpyQrqCkt+F7qrFtimtI6592diS1A6yv30pe/gb8M11SKQDrijgvIhkspke0t7XtzGquW1j2uiI0nFF/k28ttbFTeCF3ocxvFRKMat8mHWwK1TgopryF9XCeoRVci9Ptkwk6rUe4y8XIvKmMySU0GgvtUuPTubMh6jApu1YDtG/H/8yBMyz7hvkPeNRdyX8nM5+YbL9nStsL/WpY1zJFAocbcr8TMWRdgbh6o/IkRxp86UAytCHPQQ00wL2Eh0rCYW9SYwSHNXBwXyyeftm3LlI8IGwEnFYyp9XTq4/fJAGwGUsxkS3Xkmc80Gg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=kernel.org 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=tWRENgTOsPYvmo7Z5UzYHRSiUSBfxxS3AoboGFqA/hA=; b=Q9BraXVgksh2FFvhMp9x/aoN2OzfIADL7vKvT2CEst0Wi5HdtTxiT7o4Z2YRpKItRY/mCB6gFcGYc1WS/1BWJenVF0xI5c70eaiiXG8guy5S/Orhyg26aZWNRzyDvKgbpiPLnxC4iCgPtVtuAMKpD8YiCoO2xqu7Rlbo2A9BR1462fU0rQkY4U86EKvChU0dkiIZcj2t4bhQ1IBvgAOnubqe9JsYdMWRe3YUwMHf5vcSv//whQgQNmItG8wvuWxMOeCWZ2pvUFyJvzbZ/s/bTky0C5HU5B5uJkYRRVOdCg5Ghnk2Lz1BxgkfqmRsIWdzEEDRQf3v/lHha0fUCd+njg== Received: from CH0PR03CA0400.namprd03.prod.outlook.com (2603:10b6:610:11b::20) by DS7PR12MB6310.namprd12.prod.outlook.com (2603:10b6:8:95::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.339.11; Sat, 22 Aug 2026 20:27:05 +0000 Received: from CH2PEPF00000149.namprd02.prod.outlook.com (2603:10b6:610:11b:cafe::24) by CH0PR03CA0400.outlook.office365.com (2603:10b6:610:11b::20) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.339.11 via Frontend Transport; Sat, 22 Aug 2026 20:27:05 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) 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 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by CH2PEPF00000149.mail.protection.outlook.com (10.167.244.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.360.3 via Frontend Transport; Sat, 22 Aug 2026 20:27:04 +0000 Received: from rnnvmail202.nvidia.com (10.129.68.7) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46; Sat, 22 Aug 2026 13:26:54 -0700 Received: from rnnvmail203.nvidia.com (10.129.68.9) by rnnvmail202.nvidia.com (10.129.68.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46; Sat, 22 Aug 2026 13:26:53 -0700 Received: from nvidia.com (10.127.8.10) by mail.nvidia.com (10.129.68.9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46 via Frontend Transport; Sat, 22 Aug 2026 13:26:51 -0700 Date: Sat, 22 Aug 2026 13:26:51 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , , , , , , , , , Subject: Re: [PATCH v9 09/12] iommu/arm-smmu-v3-kdump: Implement is_attach_deferred() Message-ID: References: <178735412602.18212.5709943748630447883.b4-review@b4> <20260822200226.GO244917@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260822200226.GO244917@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000149:EE_|DS7PR12MB6310:EE_ X-MS-Office365-Filtering-Correlation-Id: 535ff67e-f138-417c-35ce-08df008bbb2f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|82310400026|36860700016|376014|10067099003|56012099006|6133799003|22082099003|18002099003|11063799006|4143699003; X-Microsoft-Antispam-Message-Info: qeHDKyclv+bJYLm9cFawakjBUiMm2TiAh1TxZvW+FCwXZ5r2U6m7hG95MPT3kLodj1vNIuAa6QDC76z1Gdq5MdSQziY0MGlPnxcY/PoW54Wd0S6kASj0B+iIhTtKlSNn5EXw4mQjRZDfpchARF6VPplOz/DJU7sTd7LzOcJ6smsbucE3KRUMkbxD8C2lvSR0qL9CsppqQIwfjTUCoop0snAp0qi488nvYaeQiJqZ9VYpS5hR1Dziu10U83OiizZmSy7Ya7I90qoCGXnDGg/qGdBHg14gdD2IYLhx7gLjUywvtccVP5bpajbuUhcuqBZOyYeqhP11+bX4nWsyamyRuiIaNGUnUcd22pb0VWciThA2VaPFKmw93JVMkzCsS2UoFiKezmU7RBdiidoLxOXilxxKcJ4Ozd2ppo/FIQhmTw40iD9EEcIf+FvnAia8IKLeIprNga7G7QNNnC/Xrfyo3YvWi3bFKnOrmtl7BzUzc4me0sG5kBDpGsDrWEq1rGUUvCw6kqFs7FmsqG5OGn6DMOtYj98VXHOvCJTuK0XBeINP+t4uekSjlAaef6I63bAZ41hxLMxa1R0TGcYIO90ZureFdXw/aCGDZgoLBfd8fy7Yq52Ra/U6kzIt4fPZC0oqZn2yujATyvW6Ct8izvZzIiuuN+nuktVNMQH36lTp5JONdm2WkEuaHrfA/Q7WgMUaFSv3sPqnZ13vMu9adB1utg== X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(23010399003)(1800799024)(82310400026)(36860700016)(376014)(10067099003)(56012099006)(6133799003)(22082099003)(18002099003)(11063799006)(4143699003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 2GDSPbZinjBsO4vxzpsFuPd1eLQqKPnYkqOP+Zhp6q+0Qz5StwGtoA1jJN+UL5BVwcngfkDrsZ/uzsQYBCbhlWSqwASjxaNMJISnSA9JKk148nNICpXZzII8K7Ot0IjTOS1uQ2BxoXemFsXqKODlDihp0O1oBSE3nRUDJqLt7CWjZzbkz7HrhKwsXsqJc7z3VegeMdF+CLP6fVcuPnrx9CDb9YRuWkQkXypnqI9//XMMX/+X4IF1wVjj0zCZBT58qCca8NJc+MU+Xd8DKPwfL0cfvaJBbm5Oe9XkFWvCViqf+VbWHVeLPOZR65WVUWwhZndWZPPT0tsGnJ+f0c+KQ+Bj2NZ44q4QRxGyuNK5KOvceNoOHi2tv9pfutAuKujFbofDQglmM4sQMy0oNQw4Ey5McDmlmLjnGOjNE8aJhk2vln1Ee0z+R8kgV5N+PCps X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Aug 2026 20:27:04.9231 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 535ff67e-f138-417c-35ce-08df008bbb2f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000149.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6310 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260822_132712_722993_D15CC926 X-CRM114-Status: GOOD ( 11.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, Aug 22, 2026 at 05:02:26PM -0300, Jason Gunthorpe wrote: > On Sat, Aug 22, 2026 at 11:16:35AM -0700, Nicolin Chen wrote: > > On Fri, Aug 21, 2026 at 08:15:26PM -0300, Jason Gunthorpe wrote: > > > > @@ -1276,6 +1292,12 @@ arm_smmu_kdump_adopt_deferred_l2_strtab(struct arm_smmu_device *smmu, u32 sid, > > > > { > > > > return -EOPNOTSUPP; > > > > } > > > > + > > > > +static inline bool > > > > +arm_smmu_kdump_is_attach_deferred(struct arm_smmu_master *master) > > > > +{ > > > > + return false; > > > > +} > > > > > > > > > ? > > > > This is for !CONFIG_CRASH_DUMP case. I think we need it. > > Hmm, I am testing b4 review.. I had written > > #define arm_smmu_kdump_is_attach_deferred NULL Hmm, I'm adding two-level is_attach_deferred functions: arm_smmu_is_attached_deferred() { if (OPT_KDUMP_ADOPT) arm_smmu_kdump_is_attach_deferred(); // internally doesn't check OPT_KDUMP_ADOPT } [...] .is_attach_deferred = arm_smmu_is_attached_deferred, So, arm_smmu_kdump_is_attach_deferred cannot be NULL. Nicolin