From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756880AbYIRVLw (ORCPT ); Thu, 18 Sep 2008 17:11:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755134AbYIRVLo (ORCPT ); Thu, 18 Sep 2008 17:11:44 -0400 Received: from smtp-out.google.com ([216.239.33.17]:10765 "EHLO smtp-out3.google.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754040AbYIRVLn (ORCPT ); Thu, 18 Sep 2008 17:11:43 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=message-id:date:from:to:subject:cc:in-reply-to: mime-version:content-type:content-transfer-encoding: content-disposition:references; b=G8wLWaCwnZSWOZ5knJCmaAgU9LeK7EcmtO4Xk9mPexHDTuD3cQ9uKiLY8UAXlcCOi 2efYesxv89hT93Y8dKXhQ== Message-ID: <33307c790809181411j41a6fc4ev8560a13ed8661ec2@mail.gmail.com> Date: Thu, 18 Sep 2008 14:11:35 -0700 From: "Martin Bligh" To: "Chris Snook" Subject: Re: Populating multiple ptes at fault time Cc: "Jeremy Fitzhardinge" , "Christoph Lameter" , "Nick Piggin" , "Hugh Dickens" , "Linux Memory Management List" , "Linux Kernel Mailing List" , "Avi Kivity" , "Andrew Morton" , "Rik van Riel" In-Reply-To: <48D2BFB8.6010503@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <48D142B2.3040607@goop.org> <48D1625C.7000309@redhat.com> <48D17A93.4000803@goop.org> <48D29AFB.5070409@linux-foundation.org> <48D2A392.6010308@goop.org> <33307c790809181352h14f2cf26kc73de75b939177b5@mail.gmail.com> <48D2BFB8.6010503@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> Yup, basically you're assuming good locality of reference, but it turns >> out that (as davej would say) "userspace sucks". > > Well, *most* userspace sucks. It might still be worthwhile to do this when > userspace is using madvise(). Quite possibly true ... something to benchmark.