From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx126.postini.com [74.125.245.126]) by kanga.kvack.org (Postfix) with SMTP id BAACC6B005C for ; Thu, 31 May 2012 20:46:15 -0400 (EDT) Date: Thu, 31 May 2012 17:45:31 -0700 (PDT) From: david@lang.hm 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; format=flowed Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: Andi Kleen , Christoph Lameter , 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 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. David Lang -- 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