Re: Right Semantics for ioremap, remap_page_range

[Pete Zaitcev]

> base for 64Mb Ram Onboard. After ioremap() I actually like
> to do remap_page_range through fileops/mmap call.

Bad idea. The remap_page_range can remap actual memory only,
located on the CPU side of the I/O bridge.
What ioremap returns is useful in readb/writeb only, and
not to be fed into other functions.

Instead, use io_remap_page_range, lift the example from
drivers/video/fbmem.c.

-- Pete