Re: [PATCH] x86/PCI: never allocate PCI MMIO resources below BIOS_END

[Yinghai <yinghai.lu@oracle.com>]

On 04/28/2010 12:06 PM, Bjorn Helgaas wrote:
> On Wednesday 28 April 2010 11:14:45 am Yinghai Lu wrote:
>> Never mind, for 2.6.34 your patch should be good enough.
> 
> Uh, OK.
> 
> I'm not trying to be a nuisance, but if there's a machine where
> we think there's a bridge window like [mem 0xfed20000-0xffffffff],
> I want to fix it, even if you think it's "good enough for 2.6.34."
> 
> I was hoping you could specifically confirm that "yes, that AMD
> machine was fixed by d558b483d5a," or else give me some more
> information that would help me figure out what's going on.


[    0.000000]  BIOS-e820: 0000000000000100 - 0000000000098c00 (usable)
[    0.000000]  BIOS-e820: 0000000000098c00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e6000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 00000000d7fa0000 (usable)
[    0.000000]  BIOS-e820: 00000000d7fae000 - 00000000d7fb0000 (reserved)
[    0.000000]  BIOS-e820: 00000000d7fb0000 - 00000000d7fbe000 (ACPI data)
[    0.000000]  BIOS-e820: 00000000d7fbe000 - 00000000d7ff0000 (ACPI NVS)
[    0.000000]  BIOS-e820: 00000000d7ff0000 - 00000000f0000000 (reserved)
[    0.000000]  BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000ff700000 - 0000000100000000 (reserved)
[    0.000000]  BIOS-e820: 0000000100000000 - 0000008028000000 (usable)

[    6.960006] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    6.984225] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-06])
[    7.023528] pci_root PNP0A03:00: host bridge window [io  0x0000-0x03af]
[    7.024014] pci_root PNP0A03:00: host bridge window [io  0x03b0-0x03bb]
[    7.028005] pci_root PNP0A03:00: host bridge window [io  0x03bc-0x03bf]
[    7.032005] pci_root PNP0A03:00: host bridge window [io  0x03c0-0x03df]
[    7.036005] pci_root PNP0A03:00: host bridge window [io  0x03e0-0xefff]
[    7.040011] pci_root PNP0A03:00: host bridge window [mem 0xd8000000-0xe7ffffff]
[    7.044005] pci_root PNP0A03:00: host bridge window [mem 0xf0000000-0xfe9fffff]
[    7.048005] pci_root PNP0A03:00: host bridge window [mem 0xfec00000-0xfed0ffff]
[    7.052005] pci_root PNP0A03:00: host bridge window [mem 0x000a0000-0x000bffff]
[    7.056011] pci_root PNP0A03:00: host bridge window [mem 0xfed20000-0xffffffff]


d7ff0000-efffffff : reserved
  d8000000-e7ffffff : PCI Bus 0000:00
    d8000000-dfffffff : GART
  e8000000-efffffff : PCI Bus 0000:80
fec00000-fed0ffff : PCI Bus 0000:00
  fec00000-fec00fff : reserved
    fec00000-fec003ff : IOAPIC 0
  fed00000-fed003ff : HPET 0
fed10000-fed1ffff : PCI Bus 0000:80
fed20000-ffffffff : PCI Bus 0000:00
  fee00000-fee00fff : Local APIC
    fee00000-fee00fff : reserved
  fefff000-feffffff : pnp 00:0a
  ff700000-ffffffff : reserved
    ffb80000-fffffffe : pnp 00:06