Re: [PATCH] x86/PCI: never allocate PCI space from the last 1M below 4G

From: Bjorn Helgaas
Date: Thu Dec 09 2010 - 11:54:44 EST


On Friday, December 03, 2010 08:15:48 am Bjorn Helgaas wrote:
> On Thursday, December 02, 2010 06:19:20 pm Linus Torvalds wrote:
> > On Mon, Nov 29, 2010 at 2:04 PM, Bjorn Helgaas <bjorn.helgaas@xxxxxx> wrote:
> > >
> > > I think we're talking about whether to reserve the top 1MB or top 2MB.
> > > I freely admit I don't know the right answer. My point is merely that
> > > since we're using a heuristic anyway, copying Windows is a pretty good
> > > starting point. In my mind, doing something different requires a
> > > stronger argument than "it might fix some machines where Windows is
> > > broken."
> >
> > What's the status of this? The original patch is pretty nasty, and I
> > think that hack to put things in the bios_align_resource() function is
> > just disgusting.

OK, let's drop this approach. My next proposal is the
"PCI, PNP, resources: effectively reserve ACPI device resources"
thread I posted yesterday (with mangled cover letter) here:

https://lkml.org/lkml/2010/12/8/352

Bjorn
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