4.15 is now available in Bionic.  Marking this Fix Released.

** Tags added: kernel

** Information type changed from Proprietary to Public

** Changed in: intel
       Status: New => Fix Released

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

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: Fix Released

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  [Bug] Crystal Ridge - Fix 1GB namespace alignment vs misaligned pmem

Status in intel:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

Bug description:
  A user reported failure to create a device-dax 1GB aligned namespace:

  "> On 11/28/2017 10:03 PM, Dan Williams wrote:
  >> # cat /proc/iomem
  > 100000000-186fffffff : System RAM
  > 1870000000-d56fffffff : Persistent Memory
  > 1870000000-d56fffffff : namespace12.0
  > d570000000-ed6fffffff : System RAM
  > ed70000000-1aa6fffffff : Persistent Memory
  > ed70000000-1aa6fffffff : namespace13.0

  Looks like a kernel bug handling namespace ranges that are misaligned
  (to the device-dax alignment) at the start and the end of range. These
  namespaces appear to be 256MB aligned, and the driver fails to trim
  off the unaligned space when creating the namespace. Thanks for the
  report, I'll copy you on the fix."

  Target Kernel:4.15
  Target Release: 18.04

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