From: Krishna Reddy <vdumpa@nvidia.com>
To: Jean-Philippe Brucker <jean-philippe@linaro.org>
Cc: Sachin Nikam <Snikam@nvidia.com>,
"fenghua.yu@intel.com" <fenghua.yu@intel.com>,
Yu-Huan Hsu <YHsu@nvidia.com>,
Terje Bergstrom <tbergstrom@nvidia.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
Alistair Popple <apopple@nvidia.com>,
"robin.murphy@arm.com" <robin.murphy@arm.com>,
Pritesh Raithatha <praithatha@nvidia.com>,
Vikram Sethi <vsethi@nvidia.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
Jason Gunthorpe <jgg@nvidia.com>,
"zhangfei.gao@linaro.org" <zhangfei.gao@linaro.org>,
"will@kernel.org" <will@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: RE: [PATCH v10 10/13] iommu/arm-smmu-v3: Check for SVA features
Date: Mon, 14 Dec 2020 23:23:07 +0000 [thread overview]
Message-ID: <BY5PR12MB3764B9ECDF030953A9097FEFB3C70@BY5PR12MB3764.namprd12.prod.outlook.com> (raw)
In-Reply-To: <X9cxP8g5JgAGS2wD@myrica>
>> The Tegra Next Generation SOC uses arm-smmu-v3, but it doesn't have support for BTM.
>> Do you have plan to get your earlier patch to handle invalidate notifications into upstream sometime soon?
>> Can the dependency on BTM be relaxed with the patch?
>>
>> PATCH v9 13/13] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops
>> https://www.spinics.net/lists/arm-kernel/msg825099.html
>This patch (which should be in 5.11) only takes care of sending ATC invalidations to PCIe endpoints. With this, BTM is still required to invalidate SMMU TLBs.
> However we could enable command-queue invalidation when ARM_SMMU_FEAT_BTM isn't set.
> Invalidations are still a relatively rare event so it may not be outrageously slow. I can add a patch to my tree if you have hardware to test.
Thanks! We can test the patch on emulation platform.
-KR
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next prev parent reply other threads:[~2020-12-14 23:23 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-18 10:18 [PATCH v10 00/13] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part) Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 01/13] mm: Define pasid in mm Jean-Philippe Brucker
2020-09-28 22:22 ` Will Deacon
2020-09-28 22:43 ` Fenghua Yu
2020-09-30 9:13 ` Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 02/13] iommu/ioasid: Add ioasid references Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 03/13] iommu/sva: Add PASID helpers Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 04/13] arm64: mm: Pin down ASIDs for sharing mm with devices Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 05/13] iommu/io-pgtable-arm: Move some definitions to a header Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 06/13] arm64: cpufeature: Export symbol read_sanitised_ftr_reg() Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 07/13] iommu/arm-smmu-v3: Move definitions to a header Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 08/13] iommu/arm-smmu-v3: Share process page tables Jean-Philippe Brucker
2020-09-18 10:18 ` [PATCH v10 09/13] iommu/arm-smmu-v3: Seize private ASID Jean-Philippe Brucker
2020-09-18 13:07 ` Jonathan Cameron
2020-09-18 10:18 ` [PATCH v10 10/13] iommu/arm-smmu-v3: Check for SVA features Jean-Philippe Brucker
2020-09-21 8:59 ` Shameerali Kolothum Thodi
2020-09-24 10:13 ` Jean-Philippe Brucker
2020-09-24 11:13 ` Shameerali Kolothum Thodi
2020-12-09 19:49 ` Krishna Reddy
2020-12-09 20:07 ` Will Deacon
2020-12-09 20:38 ` Krishna Reddy
2020-12-14 9:32 ` Jean-Philippe Brucker
2020-12-14 23:23 ` Krishna Reddy [this message]
2020-09-18 10:18 ` [PATCH v10 11/13] iommu/arm-smmu-v3: Add SVA device feature Jean-Philippe Brucker
2020-12-15 1:09 ` Krishna Reddy
2021-01-06 10:09 ` Jean-Philippe Brucker
2021-01-06 17:23 ` Krishna Reddy
2020-09-18 10:18 ` [PATCH v10 12/13] iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind() Jean-Philippe Brucker
2020-11-24 23:58 ` Jason Gunthorpe
2020-11-25 9:27 ` Jean-Philippe Brucker
2020-11-26 0:37 ` Jason Gunthorpe
2020-09-18 10:18 ` [PATCH v10 13/13] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops Jean-Philippe Brucker
2020-09-18 13:15 ` [PATCH v10 00/13] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part) Jonathan Cameron
2020-09-28 16:47 ` Jean-Philippe Brucker
2020-09-28 17:23 ` Will Deacon
2020-09-28 22:39 ` Will Deacon
2020-09-30 9:12 ` Jean-Philippe Brucker
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