From: Tina Zhang <tina.zhang@intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>, Kevin Tian <kevin.tian@intel.com>,
Lu Baolu <baolu.lu@linux.intel.com>
Cc: Michael Shavit <mshavit@google.com>,
Vasant Hegde <vasant.hegde@amd.com>,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
Tina Zhang <tina.zhang@intel.com>
Subject: [PATCH v4 4/6] mm: Add structure to keep sva information
Date: Tue, 12 Sep 2023 20:59:34 +0800 [thread overview]
Message-ID: <20230912125936.722348-5-tina.zhang@intel.com> (raw)
In-Reply-To: <20230912125936.722348-1-tina.zhang@intel.com>
Introduce iommu_mm_data structure to keep sva information (pasid and the
related sva domains). Add iommu_mm pointer, pointing to an instance of
iommu_mm_data structure, to mm.
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
---
include/linux/iommu.h | 5 +++++
include/linux/mm_types.h | 2 ++
2 files changed, 7 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index db2510da28c1..b9c9f14a95cc 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -670,6 +670,11 @@ struct iommu_sva {
struct iommu_domain *domain;
};
+struct iommu_mm_data {
+ u32 pasid;
+ struct list_head sva_domains;
+};
+
int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
const struct iommu_ops *ops);
void iommu_fwspec_free(struct device *dev);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 36c5b43999e6..9f4efed85f74 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -670,6 +670,7 @@ struct mm_cid {
#endif
struct kioctx_table;
+struct iommu_mm_data;
struct mm_struct {
struct {
/*
@@ -883,6 +884,7 @@ struct mm_struct {
#ifdef CONFIG_IOMMU_SVA
u32 pasid;
+ struct iommu_mm_data *iommu_mm;
#endif
#ifdef CONFIG_KSM
/*
--
2.34.1
next prev parent reply other threads:[~2023-09-12 13:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-12 12:59 [PATCH v4 0/6] Share sva domains with all devices bound to a mm Tina Zhang
2023-09-12 12:59 ` [PATCH v4 1/6] iommu: Add mm_get_enqcmd_pasid() helper function Tina Zhang
2023-09-12 12:59 ` [PATCH v4 2/6] iommu/vt-d: Remove mm->pasid in intel_sva_bind_mm() Tina Zhang
2023-09-13 2:25 ` Baolu Lu
2023-09-21 18:56 ` Jason Gunthorpe
2023-09-22 2:09 ` Tina Zhang
2023-09-12 12:59 ` [PATCH v4 3/6] iommu: Introduce mm_get_pasid() helper function Tina Zhang
2023-09-21 19:02 ` Jason Gunthorpe
2023-09-22 2:07 ` Tina Zhang
2023-09-12 12:59 ` Tina Zhang [this message]
2023-09-13 2:38 ` [PATCH v4 4/6] mm: Add structure to keep sva information Baolu Lu
2023-09-21 19:04 ` Jason Gunthorpe
2023-09-22 1:51 ` Tina Zhang
2023-09-12 12:59 ` [PATCH v4 5/6] iommu: Support mm PASID 1:n with sva domains Tina Zhang
2023-09-21 23:31 ` Jason Gunthorpe
2023-09-22 1:07 ` Tina Zhang
2023-09-12 12:59 ` [PATCH v4 6/6] mm: Deprecate pasid field Tina Zhang
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