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David_Y_
Beginner
209 Views

Which processor families support RDPID instruction?

Which processors support the RDPID instruction?

How do I programmatically check if there is support for RDPID?

Thanks.

David

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McCalpinJohn
Black Belt
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This is a standard feature bit supported by the CPUID instruction, as described in Volume 2 of the Intel Architectures SW Developer's Manual (document 325383).

Execute CPUID with eax=0x07 and ecx=0x00.  After this, bit 22 of ecx is 1 if the RDPID instruction is supported.

David_Y_
Beginner
209 Views

Thanks for your reply. Any idea which processor family first introduced this instruction?

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