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SubjectRe: ioport conflict with "dma page reg" (0x80)
Date
> I notice that the kernel reserves 0x80-0x9F for "dma page reg" (see
> /proc/ioports), but I can't find anywhere in the source that 0x80 is
> actually written to explicitly.
>
> I need to find who's stomping on 0x80 and a way to map it somewhere
> else.

The kernel uses 0x80 for all the I/O slow down macros. Edit
include/asm-i386/io.h change the 0x80 to another safe port (keyboard will not
do) and rebuild


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