virt_to_page() with ioremap_nocache -> Ooops

virt_to_page() with ioremap_nocache -> Ooops

[Christian Leber]

Hello,

I have implemented mmap with (nopage), the mmaping consists of normal
memory from __get_free_pages (set to RESERVED) and some registers/memory
that are on a PCI card (bar0), i mapped it with ioremap_nocache to to be
able to read and write it in kernelspace.

I tried to use virt_to_page(address_from_ioremap_nocache + some_offset)
and gave this back from the (nopage) function, but this leads to an
Oops. (with the other memory it works)

Where is here my error?


Regards
Christian Leber

-- 
  "Omnis enim res, quae dando non deficit, dum habetur et non datur,
   nondum habetur, quomodo habenda est."       (Aurelius Augustinus)
  Translation: <http://gnuhh.org/work/fsf-europe/augustinus.html>