From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Memory allocation problem Message-ID: From: Mark_H_Johnson@Raytheon.com Date: Thu, 1 May 2003 08:20:56 -0500 MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: anand kumar Cc: kernelnewbies@nl.linux.org, linux-mm@kvack.org List-ID: >The kernel version we are using is 2.4.18 (Redhat 8.0) and the total >amount of memory available in the box is 128MB >Is there any other mechanism to allocate large amount of physically >contiguous memory blocks during normal run time of the driver? Is this >being addressed in later kernels. I regularly use a patch (bigphysarea) recommended by Dolphin for use with their SCI cards. The copy I use is from a relatively old kernel (2.4.4) which applies with a few warnings but is otherwise OK. I did a quick search with Google for bigphysarea linux 2.4.18 and found http://frmb.home.cern.ch/frmb/download/bigphysarea-2.4.18.patch or a more readable page at http://frmb.home.cern.ch/frmb/linux.html which appears to be a version updated for 2.4.18. I believe the original patch is maintained at http://www.uni-paderborn.de/fachbereich/AG/heiss/linux/bigphysarea.html There are apparently several drivers that already use this interface, but it does require a patched kernel. I am not aware of any effort to merge this into the main line kernel (though I would certainly appreciate that). --Mark H Johnson -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org