From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 31 Jan 2008 15:09:55 -0800 (PST) From: Christoph Lameter Subject: Re: [PATCH] mmu notifiers #v5 In-Reply-To: Message-ID: References: <20080131045750.855008281@sgi.com> <20080131171806.GN7185@v2.random> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli Cc: Robin Holt , Avi Kivity , Izik Eidus , kvm-devel@lists.sourceforge.net, Peter Zijlstra , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com List-ID: On Thu, 31 Jan 2008, Christoph Lameter wrote: > > pagefault against the main linux page fault, given we already have all > > needed serialization out of the PT lock. XPMEM is forced to do that > > pt lock cannot serialize with invalidate_range since it is split. A range > requires locking for a series of ptes not only individual ones. Hmmm.. May be okay after all. I see that you are only doing it on the pte level. This means the range callbacks are taking down a max of 512 entries. So you have a callback for each pmd. A callback for 2M of memory? -- 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