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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 15:15:29 -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>,
        Chuck Ebbert <cebbert@redhat.com>
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On Monday, October 25, 2010 03:08:48 pm Bjorn Helgaas wrote:
> 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

By the way, it's been a *great* help to have Fedora being willing to
go out on a limb and help get these tested.  I know it sucks to get
those Rawhide bug reports, but they have been extremely useful to me.
Thanks!

Bjorn