Re: [PATCH 05/26] x86, pkey: add PKRU xsave fields and data structure(s)

From	Dave Hansen <dave@sr71.net>
Newsgroups	linux.kernel
Subject	Re: [PATCH 05/26] x86, pkey: add PKRU xsave fields and data structure(s)
Date	2015-09-22 22:00 +0200
Message-ID	<qbBTk-6Qf-21@gated-at.bofh.it> (permalink)
References	<q9p0e-309-3@gated-at.bofh.it> <q9pjB-3D9-71@gated-at.bofh.it> <qbBTk-6Qf-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 09/22/2015 12:53 PM, Thomas Gleixner wrote:
> On Wed, 16 Sep 2015, Dave Hansen wrote:
>> --- a/arch/x86/kernel/fpu/xstate.c~pkeys-03-xsave	2015-09-16 10:48:13.340060126 -0700
>> +++ b/arch/x86/kernel/fpu/xstate.c	2015-09-16 10:48:13.344060307 -0700
>> @@ -23,6 +23,8 @@ static const char *xfeature_names[] =
>>  	"AVX-512 opmask"		,
>>  	"AVX-512 Hi256"			,
>>  	"AVX-512 ZMM_Hi256"		,
>> +	"unknown xstate feature (8)"	,
> 
> It's not unknown. It's PT, right?

Yes, it's the Processor Trace state.

I'll give it a real name and also a comment about it being unused.
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Re: [PATCH 05/26] x86, pkey: add PKRU xsave fields and data  structure(s) Thomas Gleixner <tglx@linutronix.de> - 2015-09-22 22:00 +0200
  Re: [PATCH 05/26] x86, pkey: add PKRU xsave fields and data  structure(s) Dave Hansen <dave@sr71.net> - 2015-09-22 22:00 +0200

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