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Tue, 16 Dec 2025 12:47:00 -0800 Date: Tue, 16 Dec 2025 12:46:59 -0800 From: Nicolin Chen To: Jason Gunthorpe CC: Mostafa Saleh , , , , , , , , , Subject: Re: [PATCH rc v3 1/4] iommu/arm-smmu-v3: Add ignored bits to fix STE update sequence Message-ID: References: <20251216000952.GA6079@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20251216000952.GA6079@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD7C:EE_|PH0PR12MB7981:EE_ X-MS-Office365-Filtering-Correlation-Id: f0fdc1ab-abc4-433d-43da-08de3ce44fb3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|82310400026|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?orBnuFvYtsHsPMuz3ZiiwNie5h4QoZtctNqeYWf04VXTip5UF4iv+vFdc+1U?= =?us-ascii?Q?0GGfr8ylJMC8TzXI5C+DWiP7VdcIt44tFcxeo4wQlJVq1ybcUwe1PIVNSfwI?= =?us-ascii?Q?FfeS20izM7t/YAExA72aJW2jHcscBgeO6MPfzjlvsTx5WMpsSgPMSO+jPVYa?= =?us-ascii?Q?T2SUUVxvpinJkdZ82CBT43A9iEp3sHSYceqRIQDX6PRnQ/CJZPNTXJmO65f+?= =?us-ascii?Q?z4w+V4kTpM8d+kVND639qAM2pMPomWXuVOIb7jVHEDm+2BS35FKou2dDBQnl?= =?us-ascii?Q?yUf9003iQo9F8thYRWyTpdElvAgvxcMPLEqdHVtjI82ZBPoha5zvllHYhZ2f?= =?us-ascii?Q?noxMHxRmmM4oySjrIwlt8EQ7rVR8N8jQRCHAAYo1TyfWvB3ALA+/s6ji0q7V?= =?us-ascii?Q?XK3X6NdcVXP7F522I2RStlLXOmE2rm5p/aPGU50apBjKsp7C+OjOfXzcMkts?= =?us-ascii?Q?NJaenuTfR4tLrzyuUYE4BNKHO8zxxUb1MFbHCumUxiaUOIq08JnqyFl4W1zA?= =?us-ascii?Q?AfjTFDRzB4EfA2EcVTHxeHjibXDhHemqco+JoMMyBJtRWkeNNrcemLPKBCum?= =?us-ascii?Q?waR1qTnHHx+xePKvIQK3C2BNK8FUAQpd4jampGwkKqsIs+jYu4UMjsmhyK76?= =?us-ascii?Q?4H8igCggCGTA7t/0unYR56adUb6iAdSkNDOYsE40M+wQbu4kKPZOKFuZl1nV?= =?us-ascii?Q?zOEzMCzr9emMSZWtbA0MLqrobnY2VoldjMLjBrXW51W3jnCSy2cWHNsqHT9a?= =?us-ascii?Q?ypAE/DaEjseLq8ZCFkYac7HS6iArzk4LycJ2o99i5OnqIjuGtDJOlDqR+2/+?= =?us-ascii?Q?AURgjYDgPOOX+vS/SuzcnDoVcrgbW9Gl4xhIO4cceX+6J9o1Gcr0BCK8lR7x?= =?us-ascii?Q?NM1RgfNCjZxA6b8sOQLvDvscJJPK/7uflROCx/+a0hIoQqKuaO2Ea7mvwF4x?= =?us-ascii?Q?UHlBBmaZ9TYMYeXtbxBXdoymbxIKrOFA7LKgq13smgs9guWT78RzRcgYuIWm?= =?us-ascii?Q?56leEUyoxMPKPuDpMmyLWJDnJ0iQr9RSHtZB7q1hvaen0D7ZjjPbZoqwXQzL?= =?us-ascii?Q?jGgOEgBYhAU+21rWCm6yG4AeZVNFgl92eKFUNWjtCbv+QrTkbNKYHYYy5xj1?= =?us-ascii?Q?b94qc/eIZe4/Zl0Aylee8amfFkl5ecM+VfZLUj2eqzC2FpMBK3w4yny/CpDS?= =?us-ascii?Q?gklG8aiRzBxvtmkyC+MHsq9eC2sYVX/Adza7YjEXsNtbBGpoSj4rCXSm92+y?= =?us-ascii?Q?LpX/Frg38RWKAXCmF8Ws0FhepH0+c98uydqwr9HHr6JJFXr2fFGX/c/OG04Z?= =?us-ascii?Q?rfx6JVN40VLgpW+S9YFYRPkGqKPaDcLUfcE5dlk8g2aNFtgytJxZ83ErCyZT?= =?us-ascii?Q?HGt0gamh0YljHnSqjUu159TWMg2Ztoai2t0SR5ps2xuqH7w/mKXpri2LgeSk?= =?us-ascii?Q?m78876p0SMK33leM5HkjzwTslK5YdfUY2s51SHc0ZFXVqUTVRDrlt6pbEcLv?= =?us-ascii?Q?E7+u9Jy/hnqpwtSKFdyufyf5Xfh+4mPkyrvQIWZa25DbE0tLlC0m4IgdAaOy?= =?us-ascii?Q?gOxSdq1aWnMnnINMxRo=3D?= 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:(13230040)(1800799024)(376014)(82310400026)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2025 20:47:21.8995 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f0fdc1ab-abc4-433d-43da-08de3ce44fb3 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: CH1PEPF0000AD7C.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB7981 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251216_124729_157911_D5C0F6B1 X-CRM114-Status: GOOD ( 10.35 ) 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 Mon, Dec 15, 2025 at 08:09:52PM -0400, Jason Gunthorpe wrote: > On Sun, Dec 14, 2025 at 10:32:35PM +0000, Mostafa Saleh wrote: > > However, this approach makes it a bit explicit which bits are ignored, if we > > keep this logic, I think changing the name of get_ignored() might help, to > > something as "get_allowed_break()" or "get_update_safe()"? > > update_safe sounds good to me I have renamed the op and changed entry_set to void. I'll send v4 later today. Thanks Nicolin