From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f47.google.com (mail-pa0-f47.google.com [209.85.220.47]) by kanga.kvack.org (Postfix) with ESMTP id C99ED6B0038 for ; Wed, 18 Mar 2015 11:45:35 -0400 (EDT) Received: by padcy3 with SMTP id cy3so46004661pad.3 for ; Wed, 18 Mar 2015 08:45:35 -0700 (PDT) Received: from mga11.intel.com (mga11.intel.com. [192.55.52.93]) by mx.google.com with ESMTP id oa11si36805031pdb.33.2015.03.18.08.45.34 for ; Wed, 18 Mar 2015 08:45:34 -0700 (PDT) Message-ID: <55099D9D.7000005@intel.com> Date: Wed, 18 Mar 2015 08:45:33 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [PATCH RFC] mm: protect suid binaries against rowhammer with copy-on-read mappings References: <20150318083040.7838.76933.stgit@zurg> <550987AD.8020409@intel.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Konstantin Khlebnikov Cc: "linux-mm@kvack.org" , Linux Kernel Mailing List , "Kirill A. Shutemov" , Andrew Morton , Linus Torvalds , Andy Lutomirski On 03/18/2015 08:08 AM, Konstantin Khlebnikov wrote: > It seems the only option is memory zoning: kernel should allocate all > normal memory for userspace from isolated area which is kept far far > away from important data. Yeah, except that the kernel has a pretty hard time telling which data is important. -- 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