Re: [PATCH] x86 idle: repair large-server 50-watt idle-powerregression

[Borislav Petkov]

On Thu, Dec 19, 2013 at 06:40:41AM -0800, H. Peter Anvin wrote:
> ... or just use static_cpu_has() maybe?

Right, if we can get the compiler to generate the shortest CLFLUSH of 3
bytes with register indirect addressing for the operand, then stomping
over those 3 bytes with the alternatives would be the fastest solution.

If, of course, three NOPs which get discarded in the front end are
cheaper than the near JMP from static_cpu_has.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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