Re: [PATCH 8/8] x86, cleanups: Simplify sync_core() in the case ofno CPUID

[H. Peter Anvin]

On 11/28/2012 12:41 PM, Borislav Petkov wrote:
> While at it, you could correct this comment to adhere to kernel coding
> style:
>
> 	/*
> 	 * cpuid is a barrier...
> 	 * ...
> 	 */
>
> > +	asm volatile("cpuid" : "=a" (tmp) : "0" (1)
> > +		     : "ebx", "ecx", "edx", "memory");
>
> ... and then write this in its shorter form:
>
> 	tmp = cpuid_eax(1);
>
> to have it a bit easier on the eyes.

Wrong barrier semantics.

	-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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