x86: PAT: clarify is_linear_pfn_mapping() interface

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Impact: Documentation only

Incremental patches to address the review comments from Nick Piggin
for v3 version of x86 PAT pfnmap changes patchset here

http://lkml.indiana.edu/hypermail/linux/kernel/0812.2/01330.html

This patch:

Clarify is_linear_pfn_mapping() and its usage.

It is used by x86 PAT code for performance reasons. Identifying pfnmap
as linear over entire vma helps speedup reserve and free of memtype
for the region.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

...

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venkatesh.pallipadi@intel.com 2008-12-19 13:47:26 -08:00 • committed by H. Peter Anvin

parent a2ced6e173

commit 6bd9cd50c8

1 changed files with 8 additions and 0 deletions

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include/linux/mm.h

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