svn commit: r344353 - in head/sys: amd64/amd64 amd64/include arm/include arm64/include i386/include mips/include powerpc/include riscv/include sparc64/include vm x86/include

Conrad Meyer cem at
Wed Feb 20 22:33:40 UTC 2019

Hi Konstantin,

What is the (K)API for this (do you have any intended consumers in
mind)?  Will it be documented in a manual page at some point?  Does it
make sense to expose to userspace via mmap(2) or similar?


On Wed, Feb 20, 2019 at 1:51 AM Konstantin Belousov <kib at> wrote:
> Author: kib
> Date: Wed Feb 20 09:51:13 2019
> New Revision: 344353
> URL:
> Log:
>   Add kernel support for Intel userspace protection keys feature on
>   Skylake Xeons.
>   See SDM rev. 68 Vol 3 4.6.2 Protection Keys and the description of the
>   RDPKRU and WRPKRU instructions.
>   Reviewed by:  markj
>   Tested by:    pho
>   Sponsored by: The FreeBSD Foundation
>   MFC after:    2 weeks
>   Differential revision:

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