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Tue, 14 May 2024 17:36:56 -0700 Date: Tue, 14 May 2024 17:36:54 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , Joerg Roedel , , Robin Murphy , Will Deacon , Eric Auger , Jean-Philippe Brucker , Moritz Fischer , Michael Shavit , , Shameerali Kolothum Thodi Subject: Re: [PATCH v7 06/14] iommu/arm-smmu-v3: Do not use master->sva_enable to restrict attaches Message-ID: References: <0-v7-9597c885796c+d2-smmuv3_newapi_p2b_jgg@nvidia.com> <6-v7-9597c885796c+d2-smmuv3_newapi_p2b_jgg@nvidia.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <6-v7-9597c885796c+d2-smmuv3_newapi_p2b_jgg@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002529D:EE_|SN7PR12MB6931:EE_ X-MS-Office365-Filtering-Correlation-Id: 92a03fb9-84f3-4f99-a6cb-08dc7477270f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|82310400017|376005|36860700004|1800799015|7416005; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 May 2024 00:37:08.3941 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 92a03fb9-84f3-4f99-a6cb-08dc7477270f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002529D.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB6931 On Wed, May 08, 2024 at 03:57:14PM -0300, Jason Gunthorpe wrote: > We no longer need a master->sva_enable to control what attaches are > allowed. Instead we can tell if the attach is legal based on the current > configuration of the master. > > Keep track of the number of valid CD entries for SSID's in the cd_table > and if the cd_table has been installed in the STE directly so we know what > the configuration is. > > The attach logic is then made into: > - SVA bind, check if the CD is installed > - RID attach of S2, block if SSIDs are used > - RID attach of IDENTITY/BLOCKING, block if SSIDs are used > > Signed-off-by: Jason Gunthorpe With that in_ste check removed, Reviewed-y: Nicolin Chen 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 A77A2C04FFE for ; Wed, 15 May 2024 00:37:30 +0000 (UTC) DKIM-Signature: v=1; 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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, May 08, 2024 at 03:57:14PM -0300, Jason Gunthorpe wrote: > We no longer need a master->sva_enable to control what attaches are > allowed. Instead we can tell if the attach is legal based on the current > configuration of the master. > > Keep track of the number of valid CD entries for SSID's in the cd_table > and if the cd_table has been installed in the STE directly so we know what > the configuration is. > > The attach logic is then made into: > - SVA bind, check if the CD is installed > - RID attach of S2, block if SSIDs are used > - RID attach of IDENTITY/BLOCKING, block if SSIDs are used > > Signed-off-by: Jason Gunthorpe With that in_ste check removed, Reviewed-y: Nicolin Chen _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel