linux-kernel - Re: [patch] my mmu notifiers

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Message-ID: <Pine.LNX.4.64.0802271456090.13186@schroedinger.engr.sgi.com>
Date:	Wed, 27 Feb 2008 14:56:37 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Nick Piggin <npiggin@...e.de>
cc:	Andrea Arcangeli <andrea@...ranet.com>, akpm@...ux-foundation.org,
	Robin Holt <holt@....com>, Avi Kivity <avi@...ranet.com>,
	Izik Eidus <izike@...ranet.com>,
	kvm-devel@...ts.sourceforge.net,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	general@...ts.openfabrics.org,
	Steve Wise <swise@...ngridcomputing.com>,
	Roland Dreier <rdreier@...co.com>,
	Kanoj Sarcar <kanojsarcar@...oo.com>, steiner@....com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com
Subject: Re: [patch] my mmu notifiers

On Wed, 20 Feb 2008, Nick Piggin wrote:

> But why does _anybody_ (why does Christoph's patches) need to invalidate
> when they are going to be more permissive? This should be done lazily by
> the driver, I would have thought.

Correct. If you find such places then we can avoid the invalidates there.
 
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