Re: IBM Thinkpad G41 PCMCIA problems [Was: Yenta TI: ... no PCIinterrupts. Fish. Please report.]

[Adam Belay]

On Sun, 2005-02-20 at 09:23 -0800, Linus Torvalds wrote:
> 
> On Sun, 20 Feb 2005, Russell King wrote:
> > On Sat, Feb 19, 2005 at 08:36:12PM -0500, Steven Rostedt wrote:
> > >  BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
> > >  BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
> > >  BIOS-e820: 00000000000d0000 - 00000000000d4000 (reserved)
> > >  BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
> > >  BIOS-e820: 0000000000100000 - 000000000f6f0000 (usable)
> > >  BIOS-e820: 000000000f6f0000 - 000000000f700000 (reserved)
> > >  BIOS-e820: 000000000f700000 - 000000003fef0000 (usable)
> > >  BIOS-e820: 000000003fef0000 - 000000003fef8000 (ACPI data)
> > >  BIOS-e820: 000000003fef8000 - 000000003fefa000 (ACPI NVS)
> > >  BIOS-e820: 000000003ff00000 - 0000000040000000 (reserved)
> > 
> > Your BIOS is broken.  You probably have 1GB of RAM which extends from
> > 0x00000000 to 0x40000000.  However, there's a hole in the ACPI map
> > between 0x3fefa000 and 0x3ff00000.
> 
> Good point. And dammit, we've had that problem too many times before.

ACPI will report the ranges available to a PCI root bridge, even on
single root machines.  I'm hoping to take advantage of this in my PCI
bus changes.  It should help with these sort of problems.

Thanks,
Adam


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