x86: c_p_a(), add simple self test at boot

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Since change_page_attr() is tricky code it is good to have some regression
test code. This patch maps and unmaps some random pages in the direct mapping
at boot and then dumps the state and does some simple sanity checks.

Add it with a CONFIG option.

Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Andi Kleen 2008-01-30 13:33:43 +01:00 • committed by Ingo Molnar

parent f0646e43ac

commit fa2d8369a1

3 changed files with 235 additions and 0 deletions

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1

arch/x86/mm/Makefile_32

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1

arch/x86/mm/Makefile_64

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233

arch/x86/mm/pageattr-test.c

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