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Date: Sat, 11 Mar 2017 09:20:30 -0800
From: Andi Kleen <ak@linux.intel.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <andi@firstfloor.org>, x86@kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] x86/fpu: Support disabling AVX and AVX512
Message-ID: <20170311172030.GE32070@tassilo.jf.intel.com>
References: <20170311003241.13127-1-andi@firstfloor.org>
 <20170311003241.13127-2-andi@firstfloor.org>
 <alpine.DEB.2.20.1703111122400.3542@nanos>
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On Sat, Mar 11, 2017 at 11:46:37AM +0100, Thomas Gleixner wrote:
> > +enum xsave_features {
> > +	XSAVE_X87,
> > +	XSAVE_SSE,
> > +	XSAVE_AVX,
> > +	XSAVE_MPX_BOUNDS,
> > +	XSAVE_MPX_CSR,
> > +	XSAVE_AVX512_OPMASK,
> > +	XSAVE_AVX512_HI256,
> > +	XSAVE_AVX512_ZMM_HI256,
> > +	XSAVE_PT,
> > +	XSAVE_PKU,
> > +	XSAVE_UNKNOWN
> > +};
> 
> What's that enum for? It's unused ....

It's not.  The disable functions use it (although only the AVX parts)

-Andi