[Bug 1800867] Re: [18.10 FEAT] zcrypt DD: introduce APQN tags to support deterministic driver binding - s390tools part

[Dimitri John Ledkov]

** Information type changed from Private to Public

** Changed in: s390-tools (Ubuntu Disco)
       Status: Confirmed => Fix Committed

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Title:
  [18.10 FEAT] zcrypt DD: introduce APQN tags to support deterministic
  driver binding - s390tools part

Status in Ubuntu on IBM z Systems:
  Confirmed
Status in s390-tools package in Ubuntu:
  Fix Committed
Status in s390-tools source package in Bionic:
  New
Status in s390-tools source package in Cosmic:
  New
Status in s390-tools source package in Disco:
  Fix Committed

Bug description:
  With the introduction of KVM crypto virtualization the driver bound to an AP queue device is no longer unique determined.
  This feature provides a deterministic hot plugging semantics of AP queues that may be bound to multiple drivers.
  In particular it enables to configure an AP queue (APQN) as being bound to a particular driver even if the associate HW gets intermittently lost and reconnected.

  s390-tools part.
  Backport from 2.7.0 to 2.6.0
  Git commit: for s390-tools 2.7.0

  https://github.com/ibm-s390-tools/s390-tools/commit/0a0b4c382693cded5652404e8fa2c0e483aa33df

  lszcrypt: support for alternate zcrypt device drivers

  It needs to be applied to 2.6.0 for Ubuntu 18.10, which will apply
  seamlessly

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