Re: [coreboot] Discussion about dynamic PCI MMIO size on x86

[Gerd Hoffmann]

Hi,
> I think one can go with 2GB MMIO hole.

Agreeing here.  We have PAE.  Non-ancient 32bit kernels should support
and use it, for both security reasons (nox support requires PAE page
table format) and accessing physical address space above 4G.
> The PCIe > 4GB is a question, I don't 
> think Windows have good support for this.

Depends on the version.  Recent windows versions have no problems
handling it.  WinXP throws a BSOD though in case it finds a 64bit mmio
window described in _SB.PCI0._CRS ...

cheers,
  Gerd