Messages in this thread | | | Subject | Re: mprotect pgprot handling weirdness | From | Benjamin Herrenschmidt <> | Date | Tue, 06 Apr 2010 15:43:42 +1000 |
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On Tue, 2010-04-06 at 15:09 +1000, Benjamin Herrenschmidt wrote: > (*) Right now it's near impossible to add arch specific PROT_* bits to > mmap/mprotect for fancy things like cachability attributes, or other > nifty things like reverse-endian mappings that we have on some embedded > platforms, I'm investigating ways to better separate vm_page_prot from > vm_flags so some PROT_* bits can go straight to the former without > having to be mirrored in some way in the later.
The other (easier) option is to make the vm flags always 64-bit and reserve a range of bits here for the arch to use but I suppose there's going to be unhappiness about that one :-)
Cheers, Ben.
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