linux-kernel - Re: [PATCH 1/10 -tip] x86: Add cpufeature for Processor Name

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Message-ID: <4A14F0A1.3000605@kernel.org>
Date:	Wed, 20 May 2009 23:11:45 -0700
From:	"H. Peter Anvin" <hpa@...nel.org>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
CC:	Ingo Molnar <mingo@...e.hu>,
	Robert Richter <robert.richter@....com>,
	Dave Jones <davej@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	x86 maintainers <x86@...nel.org>
Subject: Re: [PATCH 1/10 -tip] x86: Add cpufeature for Processor Name

Jaswinder Singh Rajput wrote:
> Processor Name / Brand String (Function 8000_0002h, 8000_0003h, 8000_0004h)
> Functions 8000_0002h, 8000_0003h, and 8000_0004h each return up to 16 ASCII
> bytes of the processor name in the EAX, EBX, ECX and EDX registers.
> 
> X86_FEATURE_PNAME will be useful for displaying MSRs like AMD:
> MSRC001_00[35:30] Processor Name String Registers
> 

Pointless and wrong.  The presence of the processor name is not the same
thing as the presence of specific MSRs, which are model-specific.

	-hpa
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