Messages in this thread | | | Date | Thu, 21 May 2009 13:09:06 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/10 -tip] x86: Add cpufeature for Processor Name |
| |
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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |