linux/arch/x86
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
..
boot x86, relocs: ignore R_386_NONE in kernel relocation entries 2009-05-25 22:52:49 -07:00
configs Merge branches 'x86/apic', 'x86/defconfig', 'x86/memtest', 'x86/mm' and 'linus' into x86/core 2009-02-26 06:31:32 +01:00
crypto crypto: aes-ni - Add support to Intel AES-NI instructions for x86_64 platform 2009-02-18 16:48:06 +08:00
ia32 Separate out common fstatat code into vfs_fstatat 2009-04-20 23:02:51 -04:00
include/asm x86: Fix performance regression caused by paravirt_ops on native kernels 2009-05-15 20:07:42 +02:00
kernel acpi-cpufreq: fix printk typo and indentation 2009-05-29 21:26:26 -04:00
kvm KVM: Fix PDPTR reloading on CR4 writes 2009-05-25 20:00:53 +03:00
lguest clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
lib x86: memcpy, clean up 2009-03-12 12:21:17 +01:00
math-emu Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2 2009-03-27 17:28:43 +01:00
mm x86: ignore VM_LOCKED when determining if hugetlb-backed page tables can be shared or not 2009-05-29 08:40:03 -07:00
oprofile x86, 32-bit: fix kernel_trap_sp() 2009-05-12 00:39:52 +02:00
pci x86/pci: fix mmconfig detection with 32bit near 4g 2009-06-04 11:31:13 +01:00
power x86: disable stack-protector for __restore_processor_state() 2009-04-03 19:48:41 +02:00
vdso x86: gettimeofday() vDSO: fix segfault when tv == NULL 2009-04-30 12:31:45 +02:00
video
xen x86: Fix performance regression caused by paravirt_ops on native kernels 2009-05-15 20:07:42 +02:00
Kconfig x86: Fix performance regression caused by paravirt_ops on native kernels 2009-05-15 20:07:42 +02:00
Kconfig.cpu x86: disable X86_PTRACE_BTS for now 2009-04-15 23:15:14 +02:00
Kconfig.debug generic debug pagealloc: build fix 2009-04-02 19:04:48 -07:00
Makefile x86, kbuild: make "make install" not depend on vmlinux 2009-04-17 22:43:12 +02:00
Makefile_32.cpu