Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit?

From: Dave Hansen
Date: Fri Dec 18 2015 - 11:57:16 EST


On 12/18/2015 08:04 AM, Andy Lutomirski wrote:
> Which reminds me: __get_user, etc all respect PKRU because the SDM
> says that PKRU affects all user *and* kernel accesses to user memory
> (i.e. anything with _PAGE_USER). Should get_user_pages also respect
> PKRU?

It does. There are a couple of parts to it, but the most important are
in these patches:

> http://git.kernel.org/cgit/linux/kernel/git/daveh/x86-pkeys.git/commit/?h=pkeys-v018&id=c64acbe036487d07968ea6a5b9090169d6e40160
> http://git.kernel.org/cgit/linux/kernel/git/daveh/x86-pkeys.git/commit/?h=pkeys-v018&id=331c62eb789f969e187964e28ac80b1e0e26b69d


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