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Wed, 16 Aug 2023 10:37:38 -0700 Date: Wed, 16 Aug 2023 10:37:36 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , , , , , , , Subject: Re: [PATCH] iommu/arm-smmu-v3: Add a configurable tlbi_range_max_n_shift for TLBI Message-ID: References: <20230814215701.5455-1-nicolinc@nvidia.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE32:EE_|DS0PR12MB7873:EE_ X-MS-Office365-Filtering-Correlation-Id: 7388e9b3-5ad2-495c-4b1f-08db9e7f84ba 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:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(136003)(376002)(39860400002)(396003)(346002)(451199024)(1800799009)(82310400011)(186009)(46966006)(36840700001)(40470700004)(2906002)(40460700003)(83380400001)(4744005)(86362001)(40480700001)(478600001)(426003)(336012)(9686003)(26005)(55016003)(5660300002)(36860700001)(41300700001)(356005)(54906003)(6636002)(82740400003)(7636003)(316002)(70206006)(70586007)(8676002)(6862004)(8936002)(4326008)(33716001)(47076005);DIR:OUT;SFP:1101; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Aug 16, 2023 at 02:34:33PM -0300, Jason Gunthorpe wrote: > On Wed, Aug 16, 2023 at 10:09:20AM -0700, Nicolin Chen wrote: > > > This seems convoluted for a uapi, you should just make it > > > 'invalidate_threshold' in bytes or something simpler. > > > > Hmm. That'd be a direct 64-bit size configuration, and very likely > > to be at upper 32-bit range, so I feel the value would be very big > > that might be hard to read. > > hard to read is fine, it is sysfs OK. I'd just do it in size then. Thanks Nic _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel