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iommu/amd: Remove obsolete comment

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The AMD IOMMU driver only uses the page-sizes it gets from
IOMMU core and uses the appropriate page-size. So this
comment is not necessary.

Signed-off-by: Joerg Roedel <joro@8bytes.org>
This commit is contained in:
Joerg Roedel 2012-12-02 15:40:56 +01:00
parent 954e3dd830
commit 310aa95078
1 changed files with 0 additions and 10 deletions
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10
drivers/iommu/amd_iommu.c
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@ -57,16 +57,6 @@
* physically contiguous memory regions it is mapping into page sizes
* that we support.
*
* Traditionally the IOMMU core just handed us the mappings directly,
* after making sure the size is an order of a 4KiB page and that the
* mapping has natural alignment.
*
* To retain this behavior, we currently advertise that we support
* all page sizes that are an order of 4KiB.
*
* 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) & ~(2ULL << 38))