diff options
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 4 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 1186571f77e1..49b5d3115e56 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1372,6 +1372,7 @@ static struct page *free_sub_pt(unsigned long root, int mode, { switch (mode) { case PAGE_MODE_NONE: + case PAGE_MODE_7_LEVEL: break; case PAGE_MODE_1_LEVEL: freelist = free_pt_page(root, freelist); @@ -1403,6 +1404,9 @@ static void free_pagetable(struct protection_domain *domain) unsigned long root = (unsigned long)domain->pt_root; struct page *freelist = NULL; + BUG_ON(domain->mode < PAGE_MODE_NONE || + domain->mode > PAGE_MODE_6_LEVEL); + free_sub_pt(root, domain->mode, freelist); free_page_list(freelist); diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index e2b342e65a7b..eae0741f72dc 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -269,6 +269,7 @@ #define PAGE_MODE_4_LEVEL 0x04 #define PAGE_MODE_5_LEVEL 0x05 #define PAGE_MODE_6_LEVEL 0x06 +#define PAGE_MODE_7_LEVEL 0x07 #define PM_LEVEL_SHIFT(x) (12 + ((x) * 9)) #define PM_LEVEL_SIZE(x) (((x) < 6) ? \ |