Re: [PATCH v4 6/6] x86: allocate space within a region top-down

From: Bjorn Helgaas
Date: Mon Oct 25 2010 - 17:10:27 EST


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@xxxxxx> 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
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