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

[David A. Desrosiers]

** Changed in: openssl (Ubuntu)
   Importance: Low => Medium

** Changed in: openssl (Ubuntu)
       Status: New => Triaged

** Changed in: openssl (Ubuntu)
    Milestone: None => ubuntu-16.04.2

** Changed in: openssl (Ubuntu)
     Assignee: (unassigned) => Eric Desrochers (slashd)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to openssl in Ubuntu.
https://bugs.launchpad.net/bugs/1674399

Title:
  OpenSSL CPU detection for AMD Ryzen CPUs

Status in openssl package in Ubuntu:
  Triaged

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1674399/+subscriptions