linux-kernel - Re: [tip:x86/mce] x86/mce: Fix 32-bit build

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Message-ID: <20120523162335.GO14757@aftab.osrc.amd.com>
Date:	Wed, 23 May 2012 18:23:35 +0200
From:	Borislav Petkov <borislav.petkov@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	<mingo@...nel.org>, <hpa@...or.com>,
	<linux-kernel@...r.kernel.org>, <akpm@...ux-foundation.org>,
	<frank.arnold@....com>, <torvalds@...ux-foundation.org>,
	<tglx@...utronix.de>, <linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/mce] x86/mce: Fix 32-bit build

On Wed, May 23, 2012 at 06:18:18PM +0200, Peter Zijlstra wrote:
> On Wed, 2012-05-23 at 09:08 -0700, tip-bot for Borislav Petkov wrote:
> > +                                if (val & BIT_64(62)) {
> > +                                       val &= ~BIT_64(62);
> > +                                       wrmsrl(msrs[i], val);
> >                                  } 
> 
> Wouldn't it be much better to name those things, BIT(62), BIT(18) etc.
> aren't very descriptive at all.
> 
> MCE_MISC_COUNTER_PRESENT is much more descriptive than BIT(62).

I know but I have the exact bit name from the BKDG in the comment above
- CntP - and this is used only at one place - here - so no need for the
defines, IMHO.

But yeah, I see your point too.

-- 
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Boris.

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