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Subjectspectre v2 microcodes blacklist (march update)
Hi,

the microcode revision guidance from Intel is revised once again [1] (1 Mar).

It looks like the following:

>Intel document only clears the 0xc2 microcode on *some* parts with CPUID 506E3
>(INTEL_FAM6_SKYLAKE_DESKTOP stepping 3). For the Skylake H/S platform it's OK
>but for Skylake E3 which has the same CPUID it isn't (yet) cleared.

is no longer a problem. CPUID 506E3 with both Skylake H/S and Skylake Xeon E3
is labelled as "production" now.

Could we drop { INTEL_FAM6_SKYLAKE_DESKTOP, 0x03, 0xc2 } from
spectre_bad_microcodes?

[1]
https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf

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