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Date: Tue, 29 May 2012 18:01:29 +0200
From: Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 03/35] xen: document Xen is using an unused bit for the
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To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Hillf Danton <dhillf@gmail.com>, Dan Smith <danms@us.ibm.com>, Peter Zijlstra <a.p.zijlstra@chello.nl>, Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>, Paul Turner <pjt@google.com>, Suresh Siddha <suresh.b.siddha@intel.com>, Mike Galbraith <efault@gmx.de>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Lai Jiangshan <laijs@cn.fujitsu.com>, Bharata B Rao <bharata.rao@gmail.com>, Lee Schermerhorn <Lee.Schermerhorn@hp.com>, Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Christoph Lameter <cl@linux.com>

Hi,

On Tue, May 29, 2012 at 10:10:49AM -0400, Konrad Rzeszutek Wilk wrote:
> Oh, your git comment says "the last reserved bit". Let me
> look through all your patches to see how the AutoNUMA code works -
> I am probably just missing something simple.

Ah, with "the last reserved bit" I didn't mean AutoNUMA is using
it. It just means there is nothing left if somebody in the future
needs it. AutoNUMA happened to need it initially, but I figured how I
was better off not using it. Initially I had to make AUTONUMA=y
mutually exclusive with XEN=y but it's not the case anymore. So at
this point the patch is only a cleanup, I could drop it too but I
thought it was cleaner to keep it.

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