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mm: Add structure to keep sva information

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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>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231027000525.1278806-5-tina.zhang@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Tina Zhang
2023-10-27 08:05:23 +08:00
committed by Joerg Roedel
parent 2396046d75
commit 541a3e257d
2 changed files with 7 additions and 0 deletions
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5
include/linux/iommu.h
View File

@@ -812,6 +812,11 @@ struct iommu_sva {
struct iommu_domain *domain; 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, int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
const struct iommu_ops *ops); const struct iommu_ops *ops);
void iommu_fwspec_free(struct device *dev); void iommu_fwspec_free(struct device *dev);

2
include/linux/mm_types.h
View File

@@ -727,6 +727,7 @@ struct mm_cid {
#endif #endif
struct kioctx_table; struct kioctx_table;
struct iommu_mm_data;
struct mm_struct { struct mm_struct {
struct { struct {
/* /*
@@ -940,6 +941,7 @@ struct mm_struct {
#ifdef CONFIG_IOMMU_MM_DATA #ifdef CONFIG_IOMMU_MM_DATA
u32 pasid; u32 pasid;
struct iommu_mm_data *iommu_mm;
#endif #endif
#ifdef CONFIG_KSM #ifdef CONFIG_KSM
/* /*