------- Comment From bren...@br.ibm.com 2018-06-01 08:47 EDT-------
Just to help the SRU justification, this is a POWER9 specific driver at this 
moment.

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https://bugs.launchpad.net/bugs/1774471

Title:
  Various fixes for CXL kernel module

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  New

Bug description:
  ---Problem Description---
  Couple of CXL patches need to be merged to Ubuntu 18.04.1 kernel source tree. 
They fix various issues found after the 18.04 kernel freeze:

  401dca8cbd14 cxl: Set the PBCQ Tunnel BAR register when enabling capi mode
  497a0790e2c6 cxl: Report the tunneled operations status
  ad7b4e8022b9 cxl: Fix possible deadlock when processing page faults from 
cxllib
  02b63b420223 cxl: Remove function write_timebase_ctrl_psl9() for PSL9
  cxl: Configure PSL to not use APC virtual machines : 
http://patchwork.ozlabs.org/patch/899062/
  cxl: Disable prefault_mode in Radix mode : 
http://patchwork.ozlabs.org/patch/916159/
   
  ---uname output---
  4.15.0-12-generic
   
  ---Additional Hardware Info---
  a compatible capi FPGA adapter 

  Machine Type = Boston-LC

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