Re: [tip:x86/smap] x86-32: Start out eflags and cr4 clean

[H. Peter Anvin]

On 11/23/2012 07:49 PM, Yuhong Bao wrote:
> > + * Specifically, cr4 exists if and only if CPUID exists,
> > + * which in turn exists if and only if EFLAGS.ID exists.
> This may be true for *Intel* 486 CPUs as VME was implemented at the same time as CPUID, but I am not sure that it is true for AMD 486 CPUs.
>
> Yuhong Bao 		 	   		

That is the architecture; if you know of a counterexample speak up.  "I 
am not sure" doesn't count.

	-hpa

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/