No, we're not... sysexit/sysret doesn't count. Borislav Petkov <b...@alien8.de> 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.
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