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Received: from DM4PR12MB7767.namprd12.prod.outlook.com (2603:10b6:8:100::16) by IA0PR12MB8894.namprd12.prod.outlook.com (2603:10b6:208:483::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7849.24; Wed, 14 Aug 2024 17:31:30 +0000 Received: from DM4PR12MB7767.namprd12.prod.outlook.com ([fe80::55c8:54a0:23b5:3e52]) by DM4PR12MB7767.namprd12.prod.outlook.com ([fe80::55c8:54a0:23b5:3e52%3]) with mapi id 15.20.7849.021; Wed, 14 Aug 2024 17:31:30 +0000 Date: Wed, 14 Aug 2024 14:31:29 -0300 From: Jason Gunthorpe To: Nicolin Chen Cc: will@kernel.org, robin.murphy@arm.com, joro@8bytes.org, thierry.reding@gmail.com, vdumpa@nvidia.com, jonathanh@nvidia.com, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org Subject: Re: [PATCH v11 6/9] iommu/arm-smmu-v3: Add ARM_SMMU_OPT_SECONDARY_CMDQ_CS_NONE_ONLY Message-ID: <20240814173129.GW2032816@nvidia.com> References: <716ac3e9d2564bbc47390160286a9ce1a1d85704.1722993435.git.nicolinc@nvidia.com> Content-Type: text/plain; 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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 Tue, Aug 06, 2024 at 07:11:51PM -0700, Nicolin Chen wrote: > The CMDQV extension in NVIDIA Tegra241 SoC only supports CS_NONE in the > CS field of CMD_SYNC. Add a new SMMU option to accommodate that. > > Suggested-by: Will Deacon > Signed-off-by: Nicolin Chen > --- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 17 ++++++++++++++++- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 9 +++++---- > 2 files changed, 21 insertions(+), 5 deletions(-) Reviewed-by: Jason Gunthorpe Jason