Peter Zijlstra <pet...@infradead.org> writes:
>
> With CPL2 or RPL on user segments the protection issue seems to be
> manageable for running the instructions from kernel space. 

Nope -- it doesn't work on 64bit and even on 32bit can have large
costs on some CPUs.

Also designing 32bit only features in 2010 would seem rather ....
unfortunate.

-Andi

-- 
a...@linux.intel.com -- Speaking for myself only.

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