[Bug 1454743] Re: Explicitly disable the VSX instruction for ppc64el

[Launchpad Bug Tracker]

This bug was fixed in the package grub2 - 2.02~beta2-9ubuntu1.2

---------------
grub2 (2.02~beta2-9ubuntu1.2) trusty-proposed; urgency=medium

  * debian/patches/install_powerpc_machtypes.patch: updated: do a better job
    at detecting machine types; so as to use the right utility when updating
    nvram for the boot-device. This also fixes adding a CHRP note on the
    chrp_ibm machines, which broke PowerVM mode. (LP: #1334793)
  * debian/patches/ppc64el-disable-vsx.patch: disable the VSX instruction,
    which is enabled by default on POWER7/8 cpu models, to avoid crashes due
    to instruction exceptions. The kernel will re-enable it when necessary.
    (LP: #1454743)
  * debian/patches/ieee1275-clear-reset.patch: clear the text attribute in
    the clear command. (LP: #1454764)

 -- Mathieu Trudel-Lapierre <mathieu-tl at ubuntu.com>  Wed, 13 May 2015
12:30:05 -0400

** Changed in: grub2 (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1454743

Title:
  Explicitly disable the VSX instruction for ppc64el

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Trusty:
  Fix Released

Bug description:
  [Impact]
  POWER7/POWER8 systems which have the VSX bit enabled by default may find themselves crashing with 'instruction exception' errors when booting.

  [Test case]
  - Install grub
  - Boot the system

  [Regression Potential]
  VSX being disabled means another piece of software down the stack needs to re-enable it when necessary. This should be done by the kernel.

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