From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org
Cc: fenghua.yu@intel.com, jacob.jun.pan@linux.intel.com,
catalin.marinas@arm.com, joro@8bytes.org, robin.murphy@arm.com,
hch@infradead.org, zhengxiang9@huawei.com,
Tony Luck <tony.luck@intel.com>,
Christoph Hellwig <hch@infradeed.org>,
Jonathan.Cameron@huawei.com, zhangfei.gao@linaro.org,
will@kernel.org, xuzaibo@huawei.com, baolu.lu@linux.intel.com
Subject: [PATCH v8 01/12] mm: Define pasid in mm
Date: Thu, 18 Jun 2020 17:51:14 +0200 [thread overview]
Message-ID: <20200618155125.1548969-2-jean-philippe@linaro.org> (raw)
In-Reply-To: <20200618155125.1548969-1-jean-philippe@linaro.org>
From: Fenghua Yu <fenghua.yu@intel.com>
PASID is shared by all threads in a process. So the logical place to keep
track of it is in the "mm". Both ARM and X86 need to use the PASID in the
"mm".
Suggested-by: Christoph Hellwig <hch@infradeed.org>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
---
https://lore.kernel.org/linux-iommu/1592418233-17762-9-git-send-email-fenghua.yu@intel.com/
---
include/linux/mm_types.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 64ede5f150dc5..1ad0e54ebbbaa 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -538,6 +538,10 @@ struct mm_struct {
atomic_long_t hugetlb_usage;
#endif
struct work_struct async_put_work;
+
+#ifdef CONFIG_IOMMU_SUPPORT
+ unsigned int pasid;
+#endif
} __randomize_layout;
/*
--
2.27.0
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next prev parent reply other threads:[~2020-06-18 15:55 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-18 15:51 [PATCH v8 00/12] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part) Jean-Philippe Brucker
2020-06-18 15:51 ` Jean-Philippe Brucker [this message]
2020-06-18 15:51 ` [PATCH v8 02/12] iommu/ioasid: Add ioasid references Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 03/12] iommu/sva: Add PASID helpers Jean-Philippe Brucker
2020-06-19 7:37 ` Lu Baolu
2020-06-18 15:51 ` [PATCH v8 04/12] arm64: mm: Pin down ASIDs for sharing mm with devices Jean-Philippe Brucker
2020-07-13 15:46 ` Will Deacon
2020-07-16 15:44 ` Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 05/12] iommu/io-pgtable-arm: Move some definitions to a header Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 06/12] arm64: cpufeature: Export symbol read_sanitised_ftr_reg() Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 07/12] iommu/arm-smmu-v3: Share process page tables Jean-Philippe Brucker
2020-07-13 20:22 ` Will Deacon
2020-07-16 15:45 ` Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 08/12] iommu/arm-smmu-v3: Seize private ASID Jean-Philippe Brucker
2020-07-06 12:40 ` Xiang Zheng
2020-07-06 16:07 ` Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 09/12] iommu/arm-smmu-v3: Check for SVA features Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 10/12] iommu/arm-smmu-v3: Add SVA device feature Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 11/12] iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind() Jean-Philippe Brucker
2020-06-18 15:51 ` [PATCH v8 12/12] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops Jean-Philippe Brucker
2020-07-09 9:39 ` [PATCH v8 00/12] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part) Jean-Philippe Brucker
2020-07-20 11:11 ` Will Deacon
2020-07-20 15:39 ` Jean-Philippe Brucker
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