Sergei Shtylyov wrote:
Yeah, right please go ahead. But I wonder whether any BIOS was
actually crazy enough to map mmio region above 4G on 32bit machine.
This is a *hardware* mapping on some non-x86 platforms (like PPC 44x
or MIPS Alchemy). The arch/ppc/ and arch/mips/ kernels have special
hooks called from ioremap() which help create an illusion that the PCI
memory space on such platforms (not only it) is mapped below 4 GB;
arch/powerpc/ kernel doesn't do this anymore -- hence this newly
encountered issue.
Ah... I see. Thanks for the clarification.
--
tejun
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