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[Xen-devel] Possible Regression in "MMCONFIG PCI config space access driver backported from Linux Kernel Ver. 2.6.31.5"



Hi,

the changest ""MMCONFIG PCI config space access driver
backported from Linux Kernel Ver. 2.6.31.5" (952:f1bad8203efc)
in the linux-2.6.18-xen.hg tree appears to introduce a regression.

The problem that I am seeing is that my (x86_64) HP dc7800 no longer boots,
hanging during PCI initialisation.

ACPI: bus type pci registered
PCI: MCFG configuration 0: base f4000000 segment 0 buses 0 - 63
PCI: MCFG area at f4000000 reserved in E820
PCI: Using MMCONFIG at f4000000 - f7ffffff
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
ACPI: Assume root bridge [\_SB_.PCI0] bus is 0

The full boot log and .config are attached.

Attachment: boot.log
Description: Text document

Attachment: config
Description: Text document

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