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From: "H. Peter Anvin" <hpa@zytor.com>
To: Jaswinder Singh Rajput <jaswinder@kernel.org>
Cc: "H. Peter Anvin" <hpa@kernel.org>, Ingo Molnar <mingo@elte.hu>,
	Robert Richter <robert.richter@amd.com>,
	Dave Jones <davej@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	x86 maintainers <x86@kernel.org>
Subject: Re: [PATCH 1/10 -tip] x86: Add cpufeature for Processor Name
Date: Thu, 21 May 2009 13:09:06 -0700	[thread overview]
Message-ID: <4A15B4E2.8010908@zytor.com> (raw)
In-Reply-To: <1242891510.8204.3.camel@localhost.localdomain>

Jaswinder Singh Rajput wrote:
>>>
>> Pointless and wrong.  The presence of the processor name is not the same
>> thing as the presence of specific MSRs, which are model-specific.
>>
> 
>>From AMD's BIOS and Kernel Developer’s Guide(BKDG) Manual :
> 
>  MSRC001_00[35:30] Processor Name String Registers
> Reset: 0000 0000 0000 0000h. These registers holds the CPUID name string in ASCII. The state of these regis-
> ters are returned by CPUID instructions, CPUID Fn8000_000[4:2]. BIOS should set these registers to the
> AMD-provided product name for the processor. Each register contains a block of 8 ASCII characters; the least
> byte corresponds to the first ASCII character of the block; the most-significant byte corresponds to the last
> character of the block. MSRC001_0030 contains the first block of the name string; MSRC001_0035 contains
> the last block of the name string.
> 
>   Bits    Description
>   63:0 CpuNameString. Read-write.
> 

Yes.  Non-AMD processors also have the brand name string in CPUID, but
set them though other means.

	-hpa

  reply	other threads:[~2009-05-21 20:10 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-12 15:35 [git-pull -tip][PATCH 0/10] few cpufeature additions and users Jaswinder Singh Rajput
2009-05-12 15:37 ` [PATCH 1/10 -tip] x86: Add cpufeature for Processor Name Jaswinder Singh Rajput
2009-05-12 15:38   ` [PATCH 2/10 -tip] x86: get_model_name() user of X86_FEATURE_PNAME Jaswinder Singh Rajput
2009-05-12 15:39     ` [PATCH 3/10 -tip] x86: Add cpufeatures for Advanced Power Management Jaswinder Singh Rajput
2009-05-12 15:40       ` [PATCH 4/10 -tip] x86: check_powernow() for K7 user of Advanced Power Management features Jaswinder Singh Rajput
2009-05-12 15:40         ` [PATCH 5/10 -tip] x86: check_powernow() for K8 and later " Jaswinder Singh Rajput
2009-05-12 15:41           ` [PATCH 6/10 -tip] x86: early_init_intel() " Jaswinder Singh Rajput
2009-05-12 15:42             ` [PATCH 7/10 -tip] x86: early_init_amd() " Jaswinder Singh Rajput
2009-05-12 15:43               ` [PATCH 8/10 -tip] x86: Add cpufeature for Microcode update Jaswinder Singh Rajput
2009-05-12 15:44                 ` [PATCH 9/10 -tip] x86: collect_cpu_info() of Intel user of Microcode feature Jaswinder Singh Rajput
2009-05-12 15:44                   ` [PATCH 10/10 -tip] x86: collect_cpu_info() of AMD " Jaswinder Singh Rajput
2009-05-13  5:47                     ` Andreas Herrmann
2009-05-13  7:20                       ` Jaswinder Singh Rajput
2009-05-13  5:46                 ` [PATCH 8/10 -tip] x86: Add cpufeature for Microcode update Andreas Herrmann
2009-05-13  7:18                   ` Jaswinder Singh Rajput
2009-05-13  6:18             ` [PATCH 6/10 -tip] x86: early_init_intel() user of Advanced Power Management features Andreas Herrmann
2009-05-13  7:20               ` Jaswinder Singh Rajput
2009-05-12 17:48           ` [PATCH 5/10 -tip] x86: check_powernow() for K8 and later " Ingo Molnar
2009-05-12 18:45             ` Jaswinder Singh Rajput
2009-05-13  6:36               ` Andreas Herrmann
2009-05-12 19:07         ` [PATCH 4/10 -tip] x86: check_powernow() for K7 " Jaswinder Singh Rajput
2009-05-12 19:06       ` [PATCH 3/10 -tip] x86: Add cpufeatures for Advanced Power Management Jaswinder Singh Rajput
2009-05-12 21:04         ` Thomas Gleixner
2009-05-13  8:57           ` Jaswinder Singh Rajput
2009-05-15 13:47           ` Jaswinder Singh Rajput
2009-05-17 12:17             ` Thomas Gleixner
2009-05-17 14:18               ` Jaswinder Singh Rajput
2009-05-19 15:01               ` Jaswinder Singh Rajput
2009-05-19 16:41                 ` H. Peter Anvin
2009-05-20  7:15                   ` Jaswinder Singh Rajput
2009-05-20  7:23                     ` Jaswinder Singh Rajput
2009-05-20 18:30                     ` H. Peter Anvin
2009-05-21  5:09                       ` Jaswinder Singh Rajput
2009-05-13  6:27         ` Andreas Herrmann
2009-05-21  6:14           ` H. Peter Anvin
2009-05-21  6:11   ` [PATCH 1/10 -tip] x86: Add cpufeature for Processor Name H. Peter Anvin
2009-05-21  7:38     ` Jaswinder Singh Rajput
2009-05-21 20:09       ` H. Peter Anvin [this message]
2009-05-12 20:15 ` [git-pull -tip][PATCH 0/10] few cpufeature additions and users Jaswinder Singh Rajput

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