From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 30 Apr 2003 20:22:15 -0700 From: William Lee Irwin III Subject: Re: [PATCH] remove unnecessary PAE pgd set Message-ID: <20030501032215.GA20911@holomorphy.com> References: <3EB05F61.5070404@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3EB05F61.5070404@us.ibm.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Dave Hansen Cc: Andrew Morton , linux-mm@kvack.org, Paul Larson List-ID: On Wed, Apr 30, 2003 at 04:42:25PM -0700, Dave Hansen wrote: > With PAE on, there are only 4 PGD entries. The kernel ones never > change, so there is no need to copy them when a vmalloc fault occurs. > This was this was causing problems with the split pmd patches, but it is > still correct for mainline. > Tested with and without PAE. I ran it in a loop turning on and off 10 > swap partitions, which is what excited the original bug. > http://bugme.osdl.org/show_bug.cgi?id=640 I suspect this set_pgd() should go away for non-PAE also. -- wli -- 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