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

H. Peter Anvin
2009-05-21T20:10:43Z

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