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Commit 954e3dd8 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Don't use 512GB pages 



There is a bug in the hardware that will be triggered when
this page size is used. Make sure this does not happen.

Signed-off-by: default avatarJoerg Roedel <joro@8bytes.org>
parent 78bfa9f3

drivers/iommu/amd_iommu.c

+3 −1
Original line number Diff line number Diff line
@@ -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);