[PATCH 3/5] mm: Add structure to keep sva information

Tina Zhang
2023-08-08T16:43:47Z

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.

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 30e4d1ca39b5..435d1c1afd23 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 5e74ce4a28cd..3fd65b7537f0 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -595,6 +595,7 @@ struct mm_cid {
#endif

struct kioctx_table;
+struct iommu_mm_data;
struct mm_struct {
struct {
/*
@@ -808,6 +809,7 @@ struct mm_struct {

#ifdef CONFIG_IOMMU_SVA
u32 pasid;
+ struct iommu_mm_data *iommu_mm;
#endif
#ifdef CONFIG_KSM
/*
--
2.17.1