On 11/27/2013 02:29 PM, Borislav Petkov wrote:
> On Wed, Nov 27, 2013 at 02:25:29PM -0800, H. Peter Anvin wrote:
>> Actually the CPUID is superfluous on anything than the executing CPU
>> since IRET is serializing.
>
> Why not on the executing core too? We're IRET-ting there too.
>
> Which would mean that a dummy empty syscall would be enough too since we
> need the serialization only.
>
Also don't forget we need the IPIs, too...
-hpa
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