diff options
Diffstat (limited to 'drivers/iommu/amd/io_pgtable_v2.c')
| -rw-r--r-- | drivers/iommu/amd/io_pgtable_v2.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/iommu/amd/io_pgtable_v2.c b/drivers/iommu/amd/io_pgtable_v2.c index 9f8b423f7630..27c3015947e6 100644 --- a/drivers/iommu/amd/io_pgtable_v2.c +++ b/drivers/iommu/amd/io_pgtable_v2.c @@ -37,8 +37,7 @@ static inline int get_pgtable_level(void) { - /* 5 level page table is not supported */ - return PAGE_MODE_4_LEVEL; + return amd_iommu_gpt_level; } static inline bool is_large_pte(u64 pte) @@ -379,6 +378,7 @@ static struct io_pgtable *v2_alloc_pgtable(struct io_pgtable_cfg *cfg, void *coo struct amd_io_pgtable *pgtable = io_pgtable_cfg_to_data(cfg); struct protection_domain *pdom = (struct protection_domain *)cookie; int ret; + int ias = IOMMU_IN_ADDR_BIT_SIZE; pgtable->pgd = alloc_pgtable_page(pdom->nid, GFP_ATOMIC); if (!pgtable->pgd) @@ -388,12 +388,15 @@ static struct io_pgtable *v2_alloc_pgtable(struct io_pgtable_cfg *cfg, void *coo if (ret) goto err_free_pgd; + if (get_pgtable_level() == PAGE_MODE_5_LEVEL) + ias = 57; + pgtable->iop.ops.map_pages = iommu_v2_map_pages; pgtable->iop.ops.unmap_pages = iommu_v2_unmap_pages; pgtable->iop.ops.iova_to_phys = iommu_v2_iova_to_phys; cfg->pgsize_bitmap = AMD_IOMMU_PGSIZES_V2, - cfg->ias = IOMMU_IN_ADDR_BIT_SIZE, + cfg->ias = ias, cfg->oas = IOMMU_OUT_ADDR_BIT_SIZE, cfg->tlb = &v2_flush_ops; |