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| author | Joerg Roedel <jroedel@suse.de> | 2015-04-01 12:58:48 (GMT) |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-04-02 11:31:07 (GMT) |
| commit | 3039ca1b1c37e61cc9239dbb3903db55141ecabd (patch) | |
| tree | 33d23e9b45abb6dcfb7fe1189688ebf0135cb3a6 /drivers/iommu/amd_iommu_types.h | |
| parent | 3b839a57998515bb44c091bbcb8ea0da9d2adef4 (diff) | |
| download | linux-3039ca1b1c37e61cc9239dbb3903db55141ecabd.tar.xz | |
iommu/amd: Return the pte page-size in fetch_pte
Extend the fetch_pte function to also return the page-size
that is mapped by the returned pte.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu_types.h')
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index c4fffb7..60e87d2 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -282,6 +282,12 @@ #define PTE_PAGE_SIZE(pte) \ (1ULL << (1 + ffz(((pte) | 0xfffULL)))) +/* + * Takes a page-table level and returns the default page-size for this level + */ +#define PTE_LEVEL_PAGE_SIZE(level) \ + (1ULL << (12 + (9 * (level)))) + #define IOMMU_PTE_P (1ULL << 0) #define IOMMU_PTE_TV (1ULL << 1) #define IOMMU_PTE_U (1ULL << 59) |