How can the cpu type be read in the linux kernel code (viz. x86, x86_64)?

Question

I want to detect the cpu type while the kernel is booting (viz. x86 or x86_64) so that I can do a task differently based on the cpu type. Is there a simple way to know the CPU type?

score 2 · Answer 1 · answered Mar 06 '14 at 10:04

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You can read /proc/cpuinfo to get cpu type

answered Mar 06 '14 at 10:04

Rahul R Dhobi

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score 1 · Accepted Answer · edited May 23 '17 at 10:30

1

How about the cpuid instruction ?

There is a module interfacing it, source code is here.

If interested, also have a look here or here or here for other examples.

Also have a look at this question for using cpuid to know if your system supports SSE.

edited May 23 '17 at 10:30

Community

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answered Mar 06 '14 at 09:48

Antoine

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How can the cpu type be read in the linux kernel code (viz. x86, x86_64)?

2 Answers2