pte_update and 64-bit PTEs on PPC32?
kumar.gala at freescale.com
Wed Apr 6 16:51:08 EST 2005
I've tracked down a bug I've been having to the fact that pte_update
assumes a pte is a unsigned long. I need to look into what the exact
implications this has. I was wondering what the thoughts were with
respect to how this is suppose to work properly on 440 with its 64-bit
pte? I'm looking at a 64-bit pte for some Freescale book-e parts as we
move to 36-bit physical address support.
The problem I found was ptep_get_and_clear() would return back only a
32-bit value and thus we loose any information in the upper 32-bits. I
found the call in sys_mprotect ... -> change_pte_range ->
Will provide some update on this tomorrow.
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