Re: remap_page_range problem on 2.3.x

[Thomas Sailer <sailer@ife.ee.ethz.ch>]

Andy Henroid wrote:

> Yes, the remap_page_range is done indirectly
> through mmap call to the /dev/mem driver.

I think I saw this too some time ago.

I tried to duplicate the kernel's view of the
address space above 0xc0000000 at an offset in
a usermode program. I ended up being able to
read the correct data from /dev/mem, but reading
from an mmaped page from /dev/mem returned completely
bogus data (all zero).

My code is in usb.in.tum.de, module usbstress,
files uhcidump.c and kmem*

Tom
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