Date: Fri, 29 Feb 2008 13:29:22 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
To: Andrea Arcangeli <andrea@qumranet.com>
cc: Nick Piggin <nickpiggin@yahoo.com.au>, akpm@linux-foundation.org,
       Robin Holt <holt@sgi.com>, Avi Kivity <avi@qumranet.com>,
       Izik Eidus <izike@qumranet.com>, kvm-devel@lists.sourceforge.net,
       Peter Zijlstra <a.p.zijlstra@chello.nl>, general@lists.openfabrics.org,
       Steve Wise <swise@opengridcomputing.com>,
       Roland Dreier <rdreier@cisco.com>, Kanoj Sarcar <kanojsarcar@yahoo.com>,
       steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       daniel.blueman@quadrics.com
Subject: Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges
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On Fri, 29 Feb 2008, Andrea Arcangeli wrote:

> I don't have a strong opinion if it should become a semaphore
> unconditionally or only with a CONFIG_XPMEM=y. But keep in mind
> preempt-rt runs quite a bit slower, or we could rip spinlocks out of
> the kernel in the first place ;)

D you just skip comments of people on the mmu_notifier? It took me to 
remind you about Andrew's comments to note those. And I just responded on 
the XPmem issue in the morning.
 
Again for the gazillionth time: There will be no CONFIG_XPMEM because the 
functionality needs to be generic and not XPMEM specific.

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