From: Pavel Machek <pavel@ucw.cz>
To: Nigel Cunningham <ncunningham@crca.org.au>
Cc: pm list <linux-pm@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
TuxOnIce-devel <tuxonice-devel@tuxonice.net>
Subject: Re: [linux-pm] Proposal for a new algorithm for reading & writing a hibernation image.
Date: Sun, 30 May 2010 07:25:46 +0200 [thread overview]
Message-ID: <20100530052546.GA25287@ucw.cz> (raw)
In-Reply-To: <4BE7475A.8030901@crca.org.au>
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
next prev parent reply other threads:[~2010-06-03 8:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-09 23:38 Proposal for a new algorithm for reading & writing a hibernation image Nigel Cunningham
2010-05-10 15:54 ` Bill Davidsen
2010-05-10 21:16 ` Nigel Cunningham
2010-05-10 21:16 ` Nigel Cunningham
2010-05-10 15:54 ` Bill Davidsen
2010-05-30 5:25 ` Pavel Machek [this message]
2010-06-03 8:14 ` [linux-pm] " Nigel Cunningham
2010-06-03 8:14 ` Nigel Cunningham
2010-05-30 5:25 ` Pavel Machek
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