group.of.nepali.translators team mailing list archive

[Andy Whitcroft <apw@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
     Assignee: Tim Gardner (timg-tpi) => (unassigned)

** Also affects: linux (Ubuntu Artful)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: Confirmed

** Also affects: linux (Ubuntu Zesty)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1545542

Title:
  Enable arm64 emulation of removed ARMv7 instructions

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Wily:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Zesty:
  New
Status in linux source package in Artful:
  New
Status in linux source package in Bionic:
  Confirmed

Bug description:
  Linux now supports emulation of three deprecated ARMv7 features that
  were removed from ARMv8: SWP(B), CP15ISB/DSB/DMB, and SETEND. At least
  CP15DMB is used by some armhf archive binaries (notably pandoc), so we
  need emulation enabled on the kernels that scalingstack uses.

  I haven't checked which version added which, but they appeared some
  time between 3.13 and 4.2, and I only care about 4.2 onwards. So
  please enable ARMV8_DEPRECATED, SWP_EMULATION, CP15_BARRIER_EMULATION
  and SETEND_EMULATION in arm64 kernels for wily onwards.

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