x86: cpa, preserve large pages if possible

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When CPA is called on a range which fits into a large page mapping,
avoid to split the page when:

1) There is no change of attributes
2) The range to change is a complete large mapping

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

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Thomas Gleixner 2008-02-04 16:48:07 +01:00 • committed by Ingo Molnar

parent f4ae5da0e8

commit 65e074dffa

1 changed files with 130 additions and 12 deletions

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

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142

arch/x86/mm/pageattr.c

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