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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2024-02-05 11:56:02 +0000 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-02-09 13:16:23 +0100 |
| commit | fda5108ebafe7797dc8e1279f04e6e9145c9ad10 (patch) | |
| tree | c5fbf7b122625f4692ab070c03732caf6a0f01ac /drivers/iommu/amd | |
| parent | 6f35fe5d8a0ad0125c52fb20f5d67000e369eb3a (diff) | |
| download | lwn-fda5108ebafe7797dc8e1279f04e6e9145c9ad10.tar.gz lwn-fda5108ebafe7797dc8e1279f04e6e9145c9ad10.zip | |
iommu/amd: Introduce struct protection_domain.pd_mode
This enum variable is used to track the type of page table used by the
protection domain. It will replace the protection_domain.flags in
subsequent series.
Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240205115615.6053-5-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd')
| -rw-r--r-- | drivers/iommu/amd/amd_iommu_types.h | 6 | ||||
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h index fdf7807280bd..d29d4a321e57 100644 --- a/drivers/iommu/amd/amd_iommu_types.h +++ b/drivers/iommu/amd/amd_iommu_types.h @@ -541,6 +541,11 @@ struct amd_io_pgtable { u64 *pgd; /* v2 pgtable pgd pointer */ }; +enum protection_domain_mode { + PD_MODE_V1 = 1, + PD_MODE_V2, +}; + /* * This structure contains generic data for IOMMU protection domains * independent of their use. @@ -556,6 +561,7 @@ struct protection_domain { int nid; /* Node ID */ u64 *gcr3_tbl; /* Guest CR3 table */ unsigned long flags; /* flags to find out type of domain */ + enum protection_domain_mode pd_mode; /* Track page table type */ bool dirty_tracking; /* dirty tracking is enabled in the domain */ unsigned dev_cnt; /* devices assigned to this domain */ unsigned dev_iommu[MAX_IOMMUS]; /* per-IOMMU reference count */ diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 2a5ae7a841cc..a3c8f8ea926e 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2068,6 +2068,7 @@ static int protection_domain_init_v1(struct protection_domain *domain, int mode) return -ENOMEM; } + domain->pd_mode = PD_MODE_V1; amd_iommu_domain_set_pgtable(domain, pt_root, mode); return 0; @@ -2076,6 +2077,7 @@ static int protection_domain_init_v1(struct protection_domain *domain, int mode) static int protection_domain_init_v2(struct protection_domain *domain) { domain->flags |= PD_GIOV_MASK; + domain->pd_mode = PD_MODE_V2; domain->domain.pgsize_bitmap = AMD_IOMMU_PGSIZES_V2; |