[Bug 1853271] Re: [21.10 FEAT] Valgrind support for new s390 hardware

[Simon Chopin]

My apologies, it turns out I didn't actually test-build on s390x. After
doing so, the build fails. I have a potential fix, waiting on the build
to finish.

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Title:
  [21.10 FEAT] Valgrind support  for new s390 hardware

Status in Ubuntu on IBM z Systems:
  In Progress
Status in valgrind package in Ubuntu:
  In Progress

Bug description:
  Add support of new s390 hardware instructions to Valgrind. This is
  required when running applications built for z15 under Valgrind for
  debugging purposes.

  The enablement of Valgrind with new instructions is crucial since the
  distro build environments use Valgrind for build validation of e.g.
  Glibc. Valgrind new s390 hardware support is a hard requirement for
  all distro builds with an ALS to this new s390 hardware

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