diff options
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index cb63cc5d94d7..98d74ab564b6 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -66,8 +66,10 @@ * * If at some point we'd like to utilize the IOMMU core's new behavior, * we could change this to advertise the real page sizes we support. + * + * 512GB Pages are not supported due to a hardware bug */ -#define AMD_IOMMU_PGSIZES (~0xFFFUL) +#define AMD_IOMMU_PGSIZES ((~0xFFFUL) & ~(2ULL << 38)) static DEFINE_RWLOCK(amd_iommu_devtable_lock); |