From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 30 Apr 2006 01:07:15 -0500 From: Dave McCracken Subject: Re: i386 and PAE: pud_present() Message-ID: <2432524299CCD3CA89BB647D@[10.1.1.4]> In-Reply-To: <200604281027.22183.ak@suse.de> References: <4451CA41.5070101@yahoo.com.au> <200604281027.22183.ak@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: Andi Kleen , Nick Piggin Cc: Magnus Damm , Linux Kernel Mailing List , Linux Memory Management List-ID: --On Friday, April 28, 2006 10:27:21 +0200 Andi Kleen wrote: >> Take a look a little further down the page for the comment. >> >> In i386 + PAE, pud is always present. > > I think his problem is that the PGD is always present too (in > pgtables-nopud.h) Indeed looks strange. The PGD is always fully populated on i386 if PAE is enabled. All three of the pmd pages are allocated at page table creation time and persist till the page table is deleted. Dave McCracken -- 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: email@kvack.org