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(parent: fbd3bfd) | patch
x86: set strong uncacheable where UC is really desired
authorSiddha, Suresh B <suresh.b.siddha@intel.com>
Wed, 30 Jan 2008 12:33:43 +0000 (13:33 +0100)
committerIngo Molnar <mingo@elte.hu>
Wed, 30 Jan 2008 12:33:43 +0000 (13:33 +0100)
commit4138cc3418f5eaa7524ff8e927102863f1ba0ea5
treeb974b9b392b4cd7263596358dd634b11d7e8f350tree | snapshot (tar.gz zip)
parentfbd3bfd87f91e6a454f3f61f67ee745f0cb59aa4commit | diff
x86: set strong uncacheable where UC is really desired

Also use _PAGE_PWT for all the mappings which need uncache mapping.
Instead of existing PAT2 which is UC- (and can be overwritten by MTRRs),
we now use PAT3 which is strong uncacheable.

This makes it consistent with pgprot_noncached()

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/mm/ioremap_32.c diff | blob | blame | history
arch/x86/mm/ioremap_64.c diff | blob | blame | history