[Bug 1674399] Re: OpenSSL CPU detection for AMD Ryzen CPUs

[Eric Desrochers]

* Repository : https://github.com/openssl/openssl.git

* Commits :

1aed5e1 crypto/x86*cpuid.pl: move extended feature detection.
f8418d8 crypto/x86_64cpuid.pl: move extended feature detection upwards.

- Eric

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https://bugs.launchpad.net/bugs/1674399

Title:
  OpenSSL CPU detection for AMD Ryzen CPUs

Status in openssl package in Ubuntu:
  New

Bug description:
  It has been brought to my attention that :
  "CPUID detection in OpenSSL does not properly detect potential optimizations for AMD processors."

  After further verification on my side :

  Extended feature flags were not pulled on AMD processors, as result a
  number of extensions were effectively masked on Ryzen CPUs. It should
  have been reported for Excavator since it implements AVX2 extension,
  but apparently nobody noticed ...

  The GitHub PR:
  https://github.com/openssl/openssl/pull/2849

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