x86, pat: New i/f for driver to request memtype for IO regions

Browse source

Add new routines to request memtype for IO regions. This will currently
be a backend for io_mapping_* routines. But, it can also be made available
to drivers directly in future, in case it is needed.

reserve interface reserves the memory, makes sure we have a compatible
memory type available and keeps the identity map in sync when needed.

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>

...

This commit is contained in:

Venkatesh Pallipadi 2009-07-10 09:57:34 -07:00 • committed by H. Peter Anvin

parent 279e669b3f

commit 9fd126bc74

2 changed files with 54 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

arch/x86/include/asm/pat.h

View file

49

arch/x86/mm/pat.c

View file