linux

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Yinghai Lu 75e613cdc7 x86/pci: fix mmconfig detection with 32bit near 4g

Pascal reported and bisected a commit:
|	x86/PCI: don't call e820_all_mapped with -1 in the mmconfig case

which broke one system system.

ACPI: Using IOAPIC for interrupt routing
PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 255
PCI: MCFG area at f0000000 reserved in ACPI motherboard resources
PCI: Using MMCONFIG for extended config space

it didn't have
PCI: updated MCFG configuration 0: base f0000000 segment 0 buses 0 - 63
anymore, and try to use 0xf000000 - 0xffffffff for mmconfig

For 32bit, mcfg_res->end could be 32bit only (if 64 resources aren't used)
So use end - 1 to pass the value in mcfg->end to avoid overflow.

We don't need to worry about the e820 path, they are always 64 bit.

Reported-by: Pascal Terjan <pterjan@mandriva.com>
Bisected-by: Pascal Terjan <pterjan@mandriva.com>
Tested-by: Pascal Terjan <pterjan@mandriva.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

2009-06-04 11:31:13 +01:00

acpi.c

x86/PCI: use dev_printk for PCI bus locality messages

2009-01-07 11:13:19 -08:00

amd_bus.c

x86/PCI: don't bother with root quirks if _CRS is used

2009-04-22 15:06:29 -07:00

common.c

x86/PCI: set_pci_bus_resources_arch_default cleanups

2009-04-22 14:47:46 -07:00

direct.c

x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h