From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 23 Jan 2006 19:00:03 -0600 From: Dave McCracken Subject: Re: [PATCH/RFC] Shared page tables Message-ID: In-Reply-To: <200601231853.54948.raybry@mpdtxmail.amd.com> References: <200601231816.38942.raybry@mpdtxmail.amd.com> <200601240139.46751.ak@suse.de> <200601231853.54948.raybry@mpdtxmail.amd.com> 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: Ray Bryant , Andi Kleen Cc: Robin Holt , Hugh Dickins , Linux Kernel , Linux Memory Management List-ID: --On Monday, January 23, 2006 18:53:54 -0600 Ray Bryant wrote: > Isn't it the case that if the region is large enough (say >> 2MB), that > randomized mmaps will just cause the first partial page of pte's to not > be shareable, and as soon as we have a full pte page mapped into the > file that the full pte pages will be shareable, etc, until the last > (partial) pte page is not shareable? Yes, but only if the 2MB alignment is the same. And with the current version of my patch the region has to be mapped at the same address in both processes. Sorry. Dave -- 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