From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx153.postini.com [74.125.245.153]) by kanga.kvack.org (Postfix) with SMTP id 1304B6B004D for ; Fri, 1 Jun 2012 09:51:26 -0400 (EDT) Date: Fri, 1 Jun 2012 08:51:21 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH 0/6] mempolicy memory corruption fixlet In-Reply-To: Message-ID: References: <1338368529-21784-1-git-send-email-kosaki.motohiro@gmail.com> <20120530184638.GU27374@one.firstfloor.org> <20120530193234.GV27374@one.firstfloor.org> <20120530201042.GY27374@one.firstfloor.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: david@lang.hm Cc: KOSAKI Motohiro , Andi Kleen , Linus Torvalds , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Dave Jones , Mel Gorman , stable@vger.kernel.org, hughd@google.com, sivanich@sgi.com On Thu, 31 May 2012, david@lang.hm wrote: > On Wed, 30 May 2012, KOSAKI Motohiro wrote: > > > On Wed, May 30, 2012 at 4:10 PM, Andi Kleen wrote: > > > > Yes, that's right direction, I think. Currently, shmem_set_policy() > > > > can't handle > > > > nonlinear mapping. > > > > > > I've been mulling for some time to just remove non linear mappings. > > > AFAIK they were only useful on 32bit and are obsolete and could be > > > emulated with VMAs instead. > > > > I agree. It is only userful on 32bit and current enterprise users don't use > > 32bit anymore. So, I don't think emulated by vmas cause user visible issue. > > I wish this was true, there are a lot of systems out there still running 32 > bit linux, even on 64 bit capible hardware. This is especially true in > enterprises where they have either homegrown or proprietary software that > isn't 64 bit clean. 32 bit binaries (and entire distros) run fine under 64 bit kernels. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org