Commit 541a3e25 authored Oct 27, 2023 by Tina Zhang Committed by Joerg Roedel Dec 12, 2023

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@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>

parent 2396046d

include/linux/iommu.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -812,6 +812,11 @@ 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);

include/linux/mm_types.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -727,6 +727,7 @@ struct mm_cid {
		#endif

		struct kioctx_table;
		struct iommu_mm_data;
		struct mm_struct {
		struct {
		/*
		@@ -940,6 +941,7 @@ struct mm_struct {

		#ifdef CONFIG_IOMMU_MM_DATA
		u32 pasid;
		struct iommu_mm_data *iommu_mm;
		#endif
		#ifdef CONFIG_KSM
		/*