linux-kernel - Re: [PATCH 1/4] x86/mce: Define 'SUCCOR' cpuid bit

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Message-ID: <20150501162045.GM10239@pd.tnic>
Date:	Fri, 1 May 2015 18:20:46 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Dave Hansen <dave.hansen@...ux.intel.com>
Cc:	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	tony.luck@...el.com, jiang.liu@...ux.intel.com, yinghai@...nel.org,
	x86@...nel.org, dvlasenk@...hat.com, JBeulich@...e.com,
	slaoub@...il.com, luto@...capital.net, oleg@...hat.com,
	rostedt@...dmis.org, rusty@...tcorp.com.au, prarit@...hat.com,
	linux@...musvillemoes.dk, jroedel@...e.de,
	andriy.shevchenko@...ux.intel.com, macro@...ux-mips.org,
	wangnan0@...wei.com, linux-kernel@...r.kernel.org,
	linux-edac@...r.kernel.org
Subject: Re: [PATCH 1/4] x86/mce: Define 'SUCCOR' cpuid bit

On Fri, May 01, 2015 at 08:09:40AM -0700, Dave Hansen wrote:
> Is there a reason to add the cpuid detection like this instead of adding
> an X86_FEATURE_ for it and using cpu_has() and friends?  Doing that
> would also let you see the bit in /proc/cpuinfo.

Well, as those are RAS-specific, it didn't seem to make a whole lotta
sense to advertise them globally (they're used solely in the MCE code).

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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