The performance deterioration departement provides a few non-scary fixes

and improvements:

 - Update the cached HLE state when the TSX state is changed via the new
   control register. This ensures feature bit consistency.

 - Exclude the new Zhaoxin CPUs from Spectre V2 and SWAPGS vulnerabilities.
-----BEGIN PGP SIGNATURE-----
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=dOgd
-----END PGP SIGNATURE-----