On Wednesday, October 02, 2013 1:32 PM, Bird, Tim wrote:

>A significant difficulty is that the kernel memory for ARM is currently mapped 
>by
>section (that is, using 1MB sections).  This means that small memory areas
>cannot be individually re-mapped RO on page boundaries.  If the kernel has code
>which must be writable for some reason, then with that current mapping, at 
>least
>a 1MB section would be used for that writable code.  

FYI - Sony has patches to support 4KB mappings for the kernel, for ARM,
which they've been using internally.  These might be useful
for this feature.
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