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https://bugs.launchpad.net/bugs/1842774

Title:
  Enhanced Hardware Support - Finalize Naming

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in qemu package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in qemu source package in Bionic:
  Fix Released
Status in linux source package in Disco:
  Fix Released
Status in qemu source package in Disco:
  Fix Committed

Bug description:
  @SRU Team: For SRU template of Qemu please scroll down ...

  SRU Justification Kernel:
  =========================

  [Impact]

  * Add / activate support for IBM z15 and LinuxONE III systems

  [Fix]

  * a0e2251132995b962281aa80ab54a9288f9e0b6b a0e2251 "s390: add support
  for IBM z15 machines"

  [Test Case]

  * check and verify cpuinfo - regression testing is possible by
  Canonical/me

  * functional testing is currently only doable by IBM

  [Regression Potential]

  * There is regression potential with having new code in and the flags
  added/active

  * but the code changes are pretty straight forward, just add config,
  cases and defs

  * and are not used on existing systems, just on the new generation
  that is not yet out in the field

  [Other Info]

  * SRU of LP 1842916 merged with (this) LP 1842774

  
  ---

  
  SRU Template for qemu as the impact/scope is different
  ======================================================

  [Impact]

  * Update naming of the new HW Generation

  * Now that the systems are released people might look for types matching
    the name and no one really knows "IBM 8561 GA1".

  * Help users to identify the cpu type by backporting the fix that sets the
    defined name.

  [Fix]

  * https://git.qemu.org/?p=qemu.git;a=commit;h=7505deca

  [Test Case]

  * qemu-system-s390x -cpu ? | grep gen15
  s390 gen15a-base     IBM 8561 GA1                        (static, 
migration-safe)
  s390 gen15a          IBM 8561 GA1                        (migration-safe)
  s390 gen15b-base     IBM 8562 GA1                        (static, 
migration-safe)
  s390 gen15b          IBM 8562 GA1                        (migration-safe)

  * With the fix gen15a should be called "IBM z15 GA1"

  [Regression Potential]

  * The only thing changing (for qemu) are some texts e.g. when showing CPU
    types. The cpu type itself that is used in e.g. scripts / commands will
    not change. Therefore the regression risk of the qemu change is next to
    none. The only I can think of is people grepping for the old ID in text
    output, but that seems theoretical and not important.

  [Other Info]

  * For an SRU perspective this is "nice to have" we will only do this
    "along" other higher impact SRUs.

  __________

  This feature request will provide the final naming of the next machine

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