[Bug 1476882] Re: arm64: synchronous abort booting linux

[dann frazier]

** Changed in: grub2 (Ubuntu Trusty)
   Importance: Undecided => High

** Changed in: grub2 (Ubuntu Vivid)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1476882

Title:
  arm64: synchronous abort booting linux

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Trusty:
  Fix Committed
Status in grub2 source package in Vivid:
  Fix Committed
Status in grub2 source package in Wily:
  Fix Released

Bug description:
  [Impact]
  On some UEFI firmware implementations for ARM64 (debug versions of Tianocore, as well as builds from AMI), GRUB will fail with Synchronous Aborts when starting the Linux kernel. It is therefore not possible to install or run Ubuntu on these systems.

  [Test Case]
  Download the Ubuntu debian-installer netboot.tar.gz  and boot and direct a system to boot from the grubnet image within. (Currently only 15.10 and newer have this tarball, though it should eventually appear in 14.04 as an SRU).

  [Regression Risk]
  The proposed patch touches only arm64 code, which limits the impact to just arm64 systems. There are few ARM64/UEFI systems on the market/supported by Ubuntu, so the risk is quite contained.

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