Messages in this thread | | | Date | Sun, 30 May 2010 07:25:46 +0200 | From | Pavel Machek <> | Subject | Re: [linux-pm] Proposal for a new algorithm for reading & writing a hibernation image. |
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Hi!
> 2. Prior to writing any of the image, also set up new 4k page tables > such that an attempt to make a change to any of the pages we're about to > write to disk will result in a page fault, giving us an opportunity to > flag the page as needing an atomic copy later. Once this is done, write > protection for the page can be disabled and the write that caused the > fault allowed to proceed.
Tricky.
page faulting code touches memory, too...
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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