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Wed, 17 Apr 2024 09:26:03 -0700 Date: Wed, 17 Apr 2024 09:26:02 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , Joerg Roedel , , Robin Murphy , Will Deacon , Eric Auger , "Moritz Fischer" , Moritz Fischer , Michael Shavit , , Shameerali Kolothum Thodi , Mostafa Saleh Subject: Re: [PATCH v7 7/9] iommu/arm-smmu-v3: Move the CD generation for SVA into a function Message-ID: References: <0-v7-cb149db3a320+3b5-smmuv3_newapi_p2_jgg@nvidia.com> <7-v7-cb149db3a320+3b5-smmuv3_newapi_p2_jgg@nvidia.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <7-v7-cb149db3a320+3b5-smmuv3_newapi_p2_jgg@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042A7:EE_|MN2PR12MB4143:EE_ X-MS-Office365-Filtering-Correlation-Id: 075f4bbd-dd59-4e67-b924-08dc5efb1cd5 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:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230031)(36860700004)(82310400014)(376005)(7416005)(1800799015);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 Tue, Apr 16, 2024 at 04:28:18PM -0300, Jason Gunthorpe wrote: > Pull all the calculations for building the CD table entry for a mmu_struct > into arm_smmu_make_sva_cd(). > > Call it in the two places installing the SVA CD table entry. > > Open code the last caller of arm_smmu_update_ctx_desc_devices() and remove > the function. > > Remove arm_smmu_write_ctx_desc() since all callers are gone. Add the > locking assertions to arm_smmu_alloc_cd_ptr() since > arm_smmu_update_ctx_desc_devices() was the last problematic caller. > > Remove quiet_cd since all users are gone, arm_smmu_make_sva_cd() creates > the same value. > > The behavior of quiet_cd changes slightly, the old implementation edited > the CD in place to set CTXDESC_CD_0_TCR_EPD0 assuming it was a SVA CD > entry. This version generates a full CD entry with a 0 TTB0 and relies on > arm_smmu_write_cd_entry() to install it hitlessly. > > Tested-by: Nicolin Chen > Tested-by: Shameer Kolothum > Signed-off-by: Jason Gunthorpe Reviewed-by: Nicolin Chen _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel