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Fri, 30 Aug 2019 18:16:05 +0000 From: Krishna Reddy To: Robin Murphy Subject: RE: [PATCH 1/7] iommu/arm-smmu: add Nvidia SMMUv2 implementation Thread-Topic: [PATCH 1/7] iommu/arm-smmu: add Nvidia SMMUv2 implementation Thread-Index: AQHVXruJtN0dV6uzzEqjzwhw4G/PK6cTynmAgAA1HEA= Date: Fri, 30 Aug 2019 18:16:05 +0000 Message-ID: References: <1567118827-26358-1-git-send-email-vdumpa@nvidia.com> <1567118827-26358-2-git-send-email-vdumpa@nvidia.com> <2ae9e0c4-6916-b005-f4bd-29e06d2056c6@arm.com> In-Reply-To: <2ae9e0c4-6916-b005-f4bd-29e06d2056c6@arm.com> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_Enabled=True; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_SiteId=43083d15-7273-40c1-b7db-39efd9ccc17a; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_Owner=VDUMPA@nvidia.com; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_SetDate=2019-08-30T18:16:02.1702597Z; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_Name=Unrestricted; 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b=bi+67q9/gXF511pd+SesAp24kh9ZBbopRbDLkPA5OqVaN+D4PPMnjPmre14Flf9WW zpP/fYqIazYmtdykC1UeNGxKCj8CDjdY0z4b2HNio97KFW38Q5zH/B/SkZ4A1g+lmI r8ZBQtAxoExdF/dhlYcXQVUNiQjjEE6fYph69uWAl0JruQh3l7tRWUJ/ibqGkA0Ldy /m0zDkXDbyOE//jLlwBKtlb4BGVbf/YBfTBICaAtPtshdhUL4C4Ys4eoPV3LGSljDP Ia1Nqh5wPyiYH+G6E5HKlUYeSzRpxgkywZ09uscJ9uzTgn94h0/fL6jYEJ8+Q9XG0o 7U8fBSV53Rv3g== Cc: Timo Alho , Thierry Reding , Mikko Perttunen , "linux-kernel@vger.kernel.org" , "will.deacon@arm.com" , "iommu@lists.linux-foundation.org" , Pritesh Raithatha , "Thomas Zeng \(SW-TEGRA\)" , Sachin Nikam , "linux-tegra@vger.kernel.org" , Yu-Huan Hsu , Juha Tukkinen , Alexander Van Brunt , "linux-arm-kernel@lists.infradead.org" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org >> +ARM_SMMU_MATCH_DATA(nvidia_smmuv2, ARM_SMMU_V2, NVIDIA_SMMUV2); > From the previous discussions, I got the impression that other than the 'novel' way they're integrated, the actual SMMU implementations were unmodified Arm MMU-500s. Is that the case, or have I misread something? The ARM MMU-500 implementation is unmodified. It is the way the are integrated and used together(for interleaved accesses) is different from regular ARM MMU-500. I have added it to get the model number and to be able differentiate the SMMU implementation in arm-smmu-impl.c. -KR _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu