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(parent: 3a96ce8) | patch
x86: PAT use reserve free memtype in ioremap and iounmap
authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>
Wed, 19 Mar 2008 00:00:17 +0000 (17:00 -0700)
committerIngo Molnar <mingo@elte.hu>
Thu, 17 Apr 2008 15:41:19 +0000 (17:41 +0200)
commitd7677d4034f040f4ce565713e0b83a31cc26f23e
tree012a9adb3792eec376d9a8fbaf08bce87226e80etree | snapshot (tar.gz zip)
parent3a96ce8cac808fbed5493adc5c605bced28e2ca1commit | diff
x86: PAT use reserve free memtype in ioremap and iounmap

Use reserve_memtype and free_memtype interfaces in ioremap/iounmap to avoid
aliasing.

If there is an existing alias for the region, inherit the memory type from
the alias. If there are conflicting aliases for the entire region, then fail
ioremap.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/mm/ioremap.c diff | blob | blame | history