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From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [PATCH v4 6/6] x86: allocate space within a region top-down
Date: Mon, 25 Oct 2010 15:08:48 -0600
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Cc: Bob Picco <bpicco@redhat.com>, Brian Bloniarz <phunge0@hotmail.com>,
        Charles Butterfield <charles.butterfield@nextcentury.com>,
        Denys Vlasenko <dvlasenk@redhat.com>, linux-pci@vger.kernel.org,
        "Horst H. von Brand" <vonbrand@inf.utfsm.cl>,
        Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org,
        Stefan Becker <chemobejk@gmail.com>, "H. Peter Anvin" <hpa@zytor.com>,
        Yinghai Lu <yinghai@kernel.org>,
        Leann Ogasawara <leann.ogasawara@canonical.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>
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On Monday, October 25, 2010 03:01:54 pm Jesse Barnes wrote:
> On Thu, 14 Oct 2010 17:18:52 -0600
> Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:
> 
> > 
> > Request that allocate_resource() use available space from high addresses
> > first, rather than the default of using low addresses first.
> > 
> > The most common place this makes a difference is when we move or assign
> > new PCI device resources.  Low addresses are generally scarce, so it's
> > better to use high addresses when possible.  This follows Windows practice
> > for PCI allocation.
> 
> Applied this series to linux-next; assuming nothing blows up I'll send
> it to Linus this week (previous versions got some testing and landed in
> a separate branch so this should be fine).

We tripped over another issue in Fedora:
  https://bugzilla.redhat.com/show_bug.cgi?id=646027

I think I see the problem, and posted a patch for testing.  When it's
resolved, I'll post an updated series.

Bjorn