group.of.nepali.translators team mailing list archive

[Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1747090

Title:
  KVM patches for s390x to provide facility bits 81 (ppa15) and 82 (bpb)

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Artful:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

Bug description:
  == SRU Justification ==
  Mainline commit 35b3fde6203b9 is a KVM patch for s390x to provide facility
  bits 81 (ppa15) and 82 (bpb).  This is required for branch prediction behaviour
  changes.

  This is the public bug for SRU.  There is also a priave bug report:
  http://bugs.launchpad.net/bugs/1743560

  There is a qemu portion to this fix:
  http://patchwork.ozlabs.org/cover/862801/

  == Fixes ==
  Artful/Bionic:
  35b3fde6203b ("KVM: s390: wire up bpb feature")

  Xenial:
  ed8dda0bf74b ("Enable all facility bits that are known good for passthrough")
  35b3fde6203b ("KVM: s390: wire up bpb feature")

  
  == Regression Potential ==
  Low, this fix is limited to s390.

  == Test Case ==
  A test kernel was built with this patch and tested by the original bug reporter.
  The bug reporter states the test kernel resolved the bug.

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