[Bug 1882494] Comment bridged from LTC Bugzilla

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------- Comment From iii at de.ibm.com 2020-06-08 06:52 EDT-------
This is correct.

zlib acceleration has been added with
https://bugs.launchpad.net/ubuntu/+source/zlib/+bug/1823157 to 19.10, so
the fix should go there as well. Earlier versions are not affected.

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https://bugs.launchpad.net/bugs/1882494

Title:
  [UBUNTU 20.04] zlib not working on all s390x systems configurations

Status in Ubuntu on IBM z Systems:
  Triaged
Status in zlib package in Ubuntu:
  New

Bug description:
  Pull request (https://github.com/madler/zlib/pull/410) and tagged
  https://github.com/iii-i/zlib/tree/dfltcc-20200511.

  The new code contains the following improvements:
  * Added support for switching between software and hardware compression.
  * Added --dfltcc configure flag (the old way of building it still works).

  Switching between software and hardware compression is not simply a
  nice-to-have feature, but is actually required by Java - that's why we
  are requesting an update.

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