Re: MCFG ACPI patch in git-x86 causes boot regression

[Robert Hancock]

Jesse Barnes wrote:
> On Monday, January 07, 2008 2:47 Andi Kleen wrote:
> > This patch
> >
> > commit c5182babd1d0706f1294af7b8dbf64e378b066bb
> > Author: Robert Hancock <hancockr@xxxxxxx>
> > Date:   Sat Jan 5 13:26:32 2008 +0100
> >
> >     x86: validate against ACPI motherboard resources
> >
> > ...
> >
> > recently added to git-x86 causes one of my Intel test systems to not
> > boot unless I specify pci=conf1.
> >
> > ...
> > ACPI: EC: Look up EC in DSDT
> > ACPI: Interpreter enabled
> > ACPI: (supports S0 S3 S4 S5)
> > ACPI: Using IOAPIC for interrupt routing
> > PCI: MCFG configuration 0: base 4026531840 segment 0 buses 0 - 127
> > PCI: MCFG area at f0000000 reserved in ACPI motherboard resources
> > PCI: Using MMCONFIG at f0000000 - f7ffffff
> > ACPI: PCI Root Bridge [PCI0] (0000:00)
> > <hang>
> >
> > The system is a SDV, but I believe production level.
> > DSDT is available at http://firstfloor.org/~andi/dsdt.dsl
> >
> > On previous kernels the MCFG was rejected because it wasn't e820
> > reserved:
>
> Yep, this patch (as was stated many times) requires other fixes to PCI 
> probing--either disabling decode, not using mmconfig unless absolutely 
> required, or one of the other discussed changes.  I'm not sure why it 
> was pushed before one of those changes went in.

I believe that such a change is in Greg KH's tree. So -mm (with both 
trees) would probably work.
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