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[Bug 1577161] Re: Please update Xenial and Willy to 1.5.2-1 (support mixed-stepping configurations)

 

** Also affects: iucode-tool (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: iucode-tool (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1577161

Title:
  Please update Xenial and Willy to 1.5.2-1 (support mixed-stepping
  configurations)

Status in iucode-tool package in Ubuntu:
  Fix Released
Status in iucode-tool source package in Xenial:
  New

Bug description:
  I have fixed a major usability bug in iucode-tool 1.5.2, which dates
  back to iucode-tool 1.2.

  Without this fix, mixed-stepping hardware configurations are not
  supported automatically, and require manual configuration.

  Mixed-stepping configurations are somewhat common on Xeon 5300 (Mac
  PRO and IBM x-series), for example.

  I recommend that Ubuntu update their "Willy Werewolf" and "Xenial
  Xerus" distributions with these changes, in order to properly support
  users of mixed-stepping Xeon systems.

  Alternatively, iucode-tool v1.2 up to v1.5.1 must be configured with
  the --enable-cpuid-device build-time option, but that choice has some
  drawbacks: it requires root permissions as well as the cpuid module to
  be loaded in order to detect processor signatures, and it scales
  *very* poorly in large boxes with too many processors.

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