From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: [PATCH 0 of 4] mm+paravirt+xen: add pte read-modify-write abstraction Date: Sat, 24 May 2008 21:44:25 +0100 Message-ID: <48387E29.50103@goop.org> References: <48372C2F.1090704@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Linus Torvalds Cc: Ingo Molnar , LKML , xen-devel , Thomas Gleixner , Hugh Dickins , Zachary Amsden , kvm-devel , Virtualization Mailing List , Rusty Russell , Peter Zijlstra List-Id: virtualization@lists.linuxfoundation.org Linus Torvalds wrote: > On Fri, 23 May 2008, Jeremy Fitzhardinge wrote: > >> Well, you could use it to update the page and protection bits while preserving >> the AD bits, but I don't think that's very useful. >> > > It's not that it's not "very useful" - it's that it would be TOTALLY > WRONG. > Sorry, I was using ironic understatement. I meant "...while preserving the AD bits, but I think that would be totally fucking stupid". J