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SubjectRe: MCFG ACPI patch in git-x86 causes boot regression
Andi Kleen wrote:
> On Mon, Jan 07, 2008 at 05:31:58PM -0600, Robert Hancock wrote:
>> Jesse Barnes wrote:
>
> Hmm -- I didn't see Jesse's mail?
>
>> I believe that such a change is in Greg KH's tree. So -mm (with both
>> trees) would probably work.
>
> Yes 2.6.24-rc6-mm1 works, but plain git-x86 does not:
>
> 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

At least, I thought it was in Greg's tree, not sure now.. This is the
patch in -mm:

http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.24-rc6/2.6.24-rc6-mm1/broken-out/pci-disable-decoding-during-sizing-of-bars.patch

Without this change a bunch of machines fail to boot even without the
MCFG change (since their MCFG was E820 reserved and so the old
validation check passed).


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