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Date: Wed, 27 Oct 2010 08:23:54 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>, Bob Picco <bpicco@redhat.com>,
        Brian Bloniarz <phunge0@hotmail.com>,
        Charles Butterfield <charles.butterfield@nextcentury.com>,
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        Leann Ogasawara <leann.ogasawara@canonical.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v5 9/9] x86: allocate space within a region top-down
Message-ID: <20101027062354.GA6854@elte.hu>
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* Jesse Barnes <jbarnes@virtuousgeek.org> wrote:

> On Tue, 26 Oct 2010 15:41:54 -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.
> > 
> > Reference: https://bugzilla.kernel.org/show_bug.cgi?id=16228#c42
> > Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
> > ---
> 
> Ok, applied this version to -next.  It's been going through distros and lots of 
> testing despite a lack of recent coverage in PCI -next, so I'm planning to send it 
> to Linus this week.  We probably won't catch much more until it hits his tree 
> anyway...

It also appears to fix a serious compatibility bug (and a v2.6.34 regression), so 
even without extensive distro testing it's wise to push this upstream ASAP IMHO ...

Thanks,

	Ingo