linux-kernel - Re: [PATCH] mmu notifiers #v7

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Message-ID: <20080229001126.GL8091@v2.random>
Date:	Fri, 29 Feb 2008 01:24:59 +0100
From:	Andrea Arcangeli <andrea@...ranet.com>
To:	Jack Steiner <steiner@....com>
Cc:	Christoph Lameter <clameter@....com>,
	Nick Piggin <npiggin@...e.de>, 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>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com
Subject: Re: [PATCH] mmu notifiers #v7

On Thu, Feb 28, 2008 at 05:17:33PM -0600, Jack Steiner wrote:
> I disagree. The location of the callout IS a performance issue. In simple
> comparisons of the 2 patches (Christoph's vs. Andrea's), Andrea's has a 7X
> increase in the number of TLB purges being issued to the GRU. TLB flushing

Are you sure that you're referring to #v7?
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