linux-kernel - Re: [RFC][PATCH 1/3] x86: introduce disabled-features

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Message-ID: <53A46D59.1000505@sr71.net>
Date:	Fri, 20 Jun 2014 10:20:25 -0700
From:	Dave Hansen <dave@...1.net>
To:	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
CC:	bp@...en8.de, x86@...nel.org
Subject: Re: [RFC][PATCH 1/3] x86: introduce disabled-features

On 06/20/2014 09:20 AM, H. Peter Anvin wrote:
>> > +#ifdef CONFIG_X86_INTEL_MPX
>> > +# define HAVE_MPX	(1<<(X86_FEATURE_MPX & 31))
>> > +#else
>> > +# define HAVE_MPX	0
>> > +#endif
>> > +
> Is this an inverted test?

Yes, that was inverted.  I've renamed it to make it a bit easier to read:

#ifdef CONFIG_X86_INTEL_MPX
# define DISABLE_MPX    0
#else
# define DISABLE_MPX    (1<<(X86_FEATURE_MPX & 31))
#endif

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