linux-kernel - Re: [PATCH 0 of 4] mm+paravirt+xen: add pte read-modify-write abstraction

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Date:	Sat, 24 May 2008 21:44:25 +0100
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	xen-devel <xen-devel@...ts.xensource.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Hugh Dickins <hugh@...itas.com>,
	Zachary Amsden <zach@...are.com>,
	kvm-devel <kvm-devel@...ts.sourceforge.net>,
	Virtualization Mailing List <virtualization@...ts.osdl.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 0 of 4] mm+paravirt+xen: add pte read-modify-write abstraction

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
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