linux-kernel - Re: [kvm-devel] [PATCH] export notifier #1

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Message-ID: <Pine.LNX.4.64.0801231147370.13547@schroedinger.engr.sgi.com>
Date:	Wed, 23 Jan 2008 11:48:43 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Andrea Arcangeli <andrea@...ranet.com>
cc:	Robin Holt <holt@....com>, Avi Kivity <avi@...ranet.com>,
	Izik Eidus <izike@...ranet.com>, Andrew Morton <akpm@...l.org>,
	Nick Piggin <npiggin@...e.de>, kvm-devel@...ts.sourceforge.net,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	steiner@....com, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com, Hugh Dickins <hugh@...itas.com>
Subject: Re: [kvm-devel] [PATCH] export notifier #1

On Wed, 23 Jan 2008, Andrea Arcangeli wrote:

> On Wed, Jan 23, 2008 at 04:52:47AM -0600, Robin Holt wrote:
> > But 100 callouts holding spinlocks will not work for our implementation
> > and even if the callouts are made with spinlocks released, we would very
> > strongly prefer a single callout which messages the range to the other
> > side.
> 
> But you take the physical address and turn into mm+va with your rmap...

The remote mm+va or a local mm+va?

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