linux-kernel - Re: [PATCH v6 03/10] x86, mpx: add macro cpu_has

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Message-ID: <53A1A98D.8050408@zytor.com>
Date:	Wed, 18 Jun 2014 08:00:29 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...el.com>
CC:	Qiaowei Ren <qiaowei.ren@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 03/10] x86, mpx: add macro cpu_has_mpx

On 06/18/2014 07:44 AM, Borislav Petkov wrote:
> 
> Why?
> 
> Practically, distros will have it enabled anyway (you have X86_INTEL_MPX
> depend on CPU_SUP_INTEL).
> 
> Are you talking about the miniscule percentage of people building their
> own kernels?
> 

We have people working hard to shave kilobytes off the smallest
configurations, because they want to fit into a megabyte of memory with
the kernel and application.

Let's try to not make their life harder than it needs to be.

	-hpa

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