linux-kernel - Re: [PATCH v4 4/7] mtrr, x86: Fix MTRR state checks in mtrr_type

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Message-ID: <1430953738.23761.330.camel@misato.fc.hp.com>
Date:	Wed, 06 May 2015 17:08:58 -0600
From:	Toshi Kani <toshi.kani@...com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	akpm@...ux-foundation.org, hpa@...or.com, tglx@...utronix.de,
	mingo@...hat.com, linux-mm@...ck.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, dave.hansen@...el.com,
	Elliott@...com, pebolle@...cali.nl
Subject: Re: [PATCH v4 4/7] mtrr, x86: Fix MTRR state checks in
 mtrr_type_lookup()

On Thu, 2015-05-07 at 00:39 +0200, Borislav Petkov wrote:
> On Wed, May 06, 2015 at 09:23:31AM -0600, Toshi Kani wrote:
> > I have a question.  Those bits define the bit field of enabled in struct
> > mtrr_state_type, which is defined in this header.  Is it OK to only move
> > those definitions to other header?
> 
> I think we shouldn't expose stuff to userspace if we don't have to
> because then we're stuck with it. Userspace has managed so far without
> those defines so I don't see why we should export them now.

OK, I will move those bits definition to arch/x86/include/asm/mtrr.h.

Thanks for the clarification,
-Toshi


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