From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1EYFmT-0001wa-55 for user-mode-linux-devel@lists.sourceforge.net; Fri, 04 Nov 2005 20:35:53 -0800 Received: from lakshmi.addtoit.com ([198.99.130.6] helo=lakshmi.solana.com) by mail.sourceforge.net with esmtp (Exim 4.44) id 1EYFmS-0003h5-5h for user-mode-linux-devel@lists.sourceforge.net; Fri, 04 Nov 2005 20:35:53 -0800 From: Jeff Dike Subject: Re: [uml-devel] Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Message-ID: <20051105052342.GB15683@ccure.user-mode-linux.org> References: <1130917338.14475.133.camel@localhost> <200511041441.11896.rob@landley.net> <200511050042.49904.blaisorblade@yahoo.it> <200511041945.53507.rob@landley.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200511041945.53507.rob@landley.net> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sat, 5 Nov 2005 00:23:42 -0500 To: Rob Landley Cc: Blaisorblade , user-mode-linux-devel@lists.sourceforge.net On Fri, Nov 04, 2005 at 07:45:53PM -0600, Rob Landley wrote: > Another advantage of prezeroing: it maps really well to what we're trying to > do here. It makes a class of not just free but zeroed memory (and madvise > zeroes the memory for us). Yeah, we would need to keep track of zeroed pages somehow. This isn't currently done, and it would require some generic kernel hooks. And it would require them in some delicate places. If there were some sort of background zeroing and tracking of zeroed pages already there, it would be a lot easier for UML. Without that, I'm not sure how to take advantage of the host's zeroing. Jeff ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel