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 C4CD4FC72C5 for ; Mon, 23 Mar 2026 23:39:42 +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:MIME-Version:In-Reply-To: Content-Type: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=YCuxfgLKJao9yLUDaSFwGGWkoQ2g/tJr6VMY3bUvPbM=; b=MZ/aHbsDh8BgWRnZ8C5W/UlibD YBCNGNmdi3RKkppnMi8nkfOhfyN/2Z5Mjum5iTPKSGzjsL+HOa57SZX6TIAgFTN1nCP/4SHUwwMOH nlV8ULFklKBZjiOp4K+noknxsXa+aqmSeAL1BslVPsmXYhzD1t5sVLIXKFBtsnqwoN8G6zucHdnp0 6qzziBr9vg3qUV23r24rTjBxsyh59/FGfY02XmNlH95ksz5Qq1lj0qDi2j91FkwCAj84GdpLuoZrG J9dS78RoSoDv3WNpA4jLN8rU1PHQjK/5f0BNX4np9WtvvfiJy41l9RMeHnwAycFy2A2oSXxdAC3U/ TwD/+etg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w4oru-000000009TB-189R; Mon, 23 Mar 2026 23:39:34 +0000 Received: from mail-southcentralusazon11012040.outbound.protection.outlook.com ([40.93.195.40] helo=SN4PR2101CU001.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w4orr-000000009S3-0opP for linux-arm-kernel@lists.infradead.org; Mon, 23 Mar 2026 23:39:32 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=cYpOYve4mzlUL3QzegyFOXH7m+8qheP0qiNt1cK/jNYeLYS4mSPsVLcGvK+3I8LF2LtOi68+LydMv9I0U0dAXGMjFGx2h2lfI+iWcOCr981vapUQwxf/3pIJK96LfcQaDI81O1L28YAhWsROVlVcS5F4pPi7Hdxcr8bx4xlf93eXgTZITsFyy2N+OQvR8yvxHE/PCgVyu5RJqN6oh9sfxBGLBo1/yw4PpycivggdFrymOSqlzNaM2CI78Ue6BqG054qao4TQZvUNPhEHUhvTfyJlldnP4Zrij1+IAEcqN31z+g9TosgAal3w4QEK2kWMeNVxR3ktQTzAet61a+6vXg== 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=YCuxfgLKJao9yLUDaSFwGGWkoQ2g/tJr6VMY3bUvPbM=; b=FTvkSZ/MWDTY25Abrekaepoi2tI0L2BqKbDt77Lly6WD2jc+/vJ4BScV5R9NkH0SABIA2lJqF+hEyQ1il+EIP0qkfQO4GK6Ot9Kzc4rkC7RV1jNzXhmrow0OvWlC/PClowgaNUWWhPwBqKrcOosFiL+00qhHc7IJ4OKgjw09lu8EtLyFyZSYM08ChAAauMYFZJLFZqWXD3LNfpYfXMoTmlOr09IL1Pz3U6juacVZLq1q0kOB6l4+UwI87vvwuQHrcSXXtyAuZjObMqIIEo/ym5dfJecGF2kXoZL50P/vwtopk7tRAChq7r6eGwV06DXSf51ayuR68iqqndgQ5qy9lg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none 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=YCuxfgLKJao9yLUDaSFwGGWkoQ2g/tJr6VMY3bUvPbM=; b=joojDL9EIwKjmh3Pmt5PmnBMKvhS5sYcaNJA3OiXQllRM7va+bFBI/eP+Id6D9BnrSvBp2hh9ynK3xBZYZTlzOg1CYM1H9tAyrp4OBOeL58h4H4eg+USXg6NiE9KrVJwLOOWhbeRq9lOi3oEQ6VRhBqh29RA0XQWRomao27u05wAdEi4drMkFix58YfClxATxOiPOEFXSWbHCXhcBC1zHXotwZ/0O7/1hejZPbT5Vmw89Z2MWpMmSfC3zz8EVPCXblwqHDuU4VKQ4K3tkwGATHAyIPvvtZY++nE4bzLNohkAbo+Ku+tMs6g3LtG7CxCKNUgxTFfXDRUQuuX8tXyH9Q== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LV8PR12MB9620.namprd12.prod.outlook.com (2603:10b6:408:2a1::19) by MN2PR12MB4486.namprd12.prod.outlook.com (2603:10b6:208:263::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9745.20; Mon, 23 Mar 2026 23:39:24 +0000 Received: from LV8PR12MB9620.namprd12.prod.outlook.com ([fe80::299d:f5e0:3550:1528]) by LV8PR12MB9620.namprd12.prod.outlook.com ([fe80::299d:f5e0:3550:1528%5]) with mapi id 15.20.9745.019; Mon, 23 Mar 2026 23:39:23 +0000 Date: Mon, 23 Mar 2026 20:39:22 -0300 From: Jason Gunthorpe To: Nicolin Chen Cc: will@kernel.org, robin.murphy@arm.com, joro@8bytes.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] iommu/arm-smmu-v3: Do not continue in __arm_smmu_domain_inv_range() Message-ID: <20260323233922.GU7340@nvidia.com> References: <20260321225041.11090-1-nicolinc@nvidia.com> <20260321225041.11090-2-nicolinc@nvidia.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260321225041.11090-2-nicolinc@nvidia.com> X-ClientProxiedBy: BLAPR03CA0060.namprd03.prod.outlook.com (2603:10b6:208:32d::35) To LV8PR12MB9620.namprd12.prod.outlook.com (2603:10b6:408:2a1::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV8PR12MB9620:EE_|MN2PR12MB4486:EE_ X-MS-Office365-Filtering-Correlation-Id: beab67ed-9594-4b33-5da2-08de893569e7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024|18002099003|56012099003|22082099003|3613699012; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV8PR12MB9620.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(1800799024)(18002099003)(56012099003)(22082099003)(3613699012);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?YmaeWMXdexZwLC9jwj3ishbecvBn5E3aeT6HjL2WFwc4Hmrv8rK3sahZNHH0?= =?us-ascii?Q?pbQ0e4w2Ud3LcpcGh3Z+xUjX22H2FZRSlc9dGWxxSQZcGpmFlrWEPkPYNqC7?= =?us-ascii?Q?T/L5Q+pcFj9e2U6vkbnQT3BhioqheNNQwAGVZjuFFw07MZW3UNUKRI1zaSeU?= =?us-ascii?Q?sCVfJdLhg8kdNZcMIConHu1tjZbXN7jabB6/0CFrpfYOFXeDztZVvszsg33a?= =?us-ascii?Q?D0wPNMfE+cWiNdymPPw8xinhvhH9VfEkiC6/N30ry1cjS0g7b4pb+uA2+bVB?= =?us-ascii?Q?VUYn6xH5NyyEjJHs/FOAAUH7BzPX5Q25Vpzz29/I9rx4VAXGC4RtARPAmiW/?= =?us-ascii?Q?1sPe42AjaAd38a6N+GKXrytTVWbwe53f+k7QBKVaa8/TYbmvfFlCEo2Ngm68?= =?us-ascii?Q?Tz1ZLURVx0bSRIPoYdFGbr/KHPY6wa26g3iUUvGJb5mwlQ1xkMwjloQdIU7T?= =?us-ascii?Q?GsvlH2lTDATjv87j+u7tOwwbwRXDhVh1+5Xs1cZ1fLQ9u18p5wQE5NjXCdK4?= =?us-ascii?Q?EsSDjTnqyTY80baidTLV5SmyqRzhWGYalZoywR6W2/JerFeWQh4ScXxYfJSM?= =?us-ascii?Q?2W12FPbbdAtE+Ox0Bjv7IPNCzuYVnWeUkrzrf67OBoiWMjh/EvhUi8U8S44a?= =?us-ascii?Q?YTCbAZwxRZmKzklNRybLfgulj+uxMqVMemmvYYBg7thRkRVwkRv+XUcIYPIB?= =?us-ascii?Q?M2M1kif3ePO+24Y6YSufFqyRIiFxbh8OohTkjgpdMLLqG5KMWW90I7b0xp+c?= =?us-ascii?Q?gxnhucQ9sMygoKB55KFSPSNPut0Chj4T8o6GO5s4jRkgwpAzelQBS02mHTrR?= =?us-ascii?Q?WmhfmrEwBkFtLdr6S369nvDkTLOk+I30InW4WFRFnGHl+zDtT6+lRfgwaeUr?= =?us-ascii?Q?avuivAjt9PBZRxraQFVnTnSbwcZ0Jasex9KUFwGUaWxSiHLjjtDtleQsrz/d?= =?us-ascii?Q?96OsxBcQVb71wxPrrFpcNbEIzuMr7QUhQIJQZCzoeP+GBHGlh0oOicYN5itM?= =?us-ascii?Q?/IlRUmzz2dIAoCQDF+yo/TgAwjAzBC/+gwzFU99f9DtuLg5gwNMnfvYvOg/i?= =?us-ascii?Q?LBpwXeNFUEKKzahGbbxXTR4cDYuC1Yx3pFls2enMhQOIXzJYaXQXs7pda/DO?= =?us-ascii?Q?DJ12N7DhKwnmgkzV4BkNtHpRKLz6b6K86piV/d/gUTfItIuCFNtZRoBxlNXL?= =?us-ascii?Q?DwS0Bd7z5FVmMDcFfF0GR2ObgJ6iN0ro89ybh4hIXQCi2choa1X/aC6wYhdh?= =?us-ascii?Q?T1nKr/ASpj2S4Rt6qFo+E5IDaS7n5EfGhp9QL2wxd4UavctNn2agusCeePm5?= =?us-ascii?Q?r7nU6Z2dDh9Jnaaiwrlu1MwtygCR5NKtFKtDCwLsgqbPvVQSpRpaYBvlA1ME?= =?us-ascii?Q?ybTAOpYUJhtvuEFyE3HYF7POsIkjnTupb37atHAAmI5uXghOr6jHpzMXh2Ox?= =?us-ascii?Q?w13bl1B9IgzXiNGKWGlp7YglINKBmWAD8uaIOTjlTBt3guL5+6nnqTzUQGzD?= =?us-ascii?Q?4OwUELzA3F9RwaQ3M0bRfJQL1WgmaLuRBSZKRDLr7PB9IgPmPytHje6YyGJw?= =?us-ascii?Q?cfWExZvH5+yXoeF+ca9J7bP1LpyKFIMDT0a9QWge+GyMlHS93jbK+JkgaXRQ?= =?us-ascii?Q?kss300C5umkZ8FSOcfFlHTAex/36EIBbsEDOk3IoYK5uDNZo+1Tc5fLWOQ60?= =?us-ascii?Q?LEoyePEonGPCuZWgxgMbq3ibED7OpFBscYLuJxG5oJ3tC9/v?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: beab67ed-9594-4b33-5da2-08de893569e7 X-MS-Exchange-CrossTenant-AuthSource: LV8PR12MB9620.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Mar 2026 23:39:23.8603 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 7sb0q7Clf9nINDj9ac/1TKIkAmoQg6ssTL3hyLqraqRLe3XG+JrNW7J1OmkhDyKq X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4486 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260323_163931_244451_5631CA1A X-CRM114-Status: GOOD ( 12.78 ) 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, Mar 21, 2026 at 03:50:40PM -0700, Nicolin Chen wrote: > The loop in the __arm_smmu_domain_inv_range() is a while loop, not a for > loop. So, using "continue" is wrong that would fail to move the needle. > > Meanwhile, though the current command is skipped, the batch still has to > go through arm_smmu_invs_end_batch() to be issued accordingly. > > Thus, use "break" to fix the issue. > > Fixes: 587bb3e56a2c ("iommu/arm-smmu-v3: Add arm_smmu_invs based arm_smmu_domain_inv_range()") > Signed-off-by: Nicolin Chen > --- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Reviewed-by: Jason Gunthorpe Jason