tree b06e86bda1545f3f84fee09e4600bb3aa25c5c33
parent 1309d4e68497184d2fd87e892ddf14076c2bda98
author Thomas Gleixner <tglx@linutronix.de> 1203364454 +0100
committer Thomas Gleixner <tglx@linutronix.de> 1203364454 +0100

x86: CPA, fix alias checks

c_p_a() did not discover all aliases correctly. (such as when called
on vmalloc()-ed areas or ioremap()-ed areas)

Push the alias checks to the lower, physical level and consistently
discover all aliases that might exist: the low direct mappings and
the high linear kernel-text mappings (on 64-bit).

Thanks to Andi Kleen for pointing out that this was buggy.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>