Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU

From	Dave Hansen <dave@sr71.net>
Newsgroups	linux.kernel
Subject	Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU
Date	2015-09-22 22:30 +0200
Message-ID	<qbCmm-7Dv-13@gated-at.bofh.it> (permalink)
References	<q9p0e-309-3@gated-at.bofh.it> <q9pjB-3D9-59@gated-at.bofh.it> <qbC2Z-7gK-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 09/22/2015 01:05 PM, Thomas Gleixner wrote:
> On Wed, 16 Sep 2015, Dave Hansen wrote:
>> This adds the raw instructions to access PKRU as well as some
>> accessor functions that correctly handle when the CPU does
>> not support the instruction.  We don't use them here, but
>> we will use read_pkru() in the next patch.
>>
>> I do not see an immediate use for write_pkru().  But, we put it
>> here for partity with its twin.
> 
> So that read_pkru() doesn't feel so lonely? I can't follow that logic.

I was actually using it in a few places, but it fell out of later
versions of the patch.  I'm happy to kill it.
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Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU Thomas Gleixner <tglx@linutronix.de> - 2015-09-22 22:10 +0200
  Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU Dave Hansen <dave@sr71.net> - 2015-09-22 22:30 +0200

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