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Message-Id: <20231017004802.109618-4-tina.zhang@intel.com>
Date: Tue, 17 Oct 2023 08:48:00 +0800
From: Tina Zhang <tina.zhang@...el.com>
To: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org
Cc: David Woodhouse <dwmw2@...radead.org>,
Lu Baolu <baolu.lu@...ux.intel.com>,
Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
Robin Murphy <robin.murphy@....com>,
Jason Gunthorpe <jgg@...pe.ca>,
Kevin Tian <kevin.tian@...el.com>,
Nicolin Chen <nicolinc@...dia.com>,
Michael Shavit <mshavit@...gle.com>,
Vasant Hegde <vasant.hegde@....com>,
Tina Zhang <tina.zhang@...el.com>,
Jason Gunthorpe <jgg@...dia.com>
Subject: [PATCH v8 3/5] mm: Add structure to keep sva information
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@....com>
Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Tested-by: Nicolin Chen <nicolinc@...dia.com>
Signed-off-by: Tina Zhang <tina.zhang@...el.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 074b98f9e5dc..e350520e3a35 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
/*
--
2.39.3
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