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[Bug 1365655] Re: ISST-KVM: R2-0: xmon disabled in Ubuntu



debian.master/config/config.common.ubuntu:# CONFIG_XMON_DEFAULT is not set

** Also affects: linux (Ubuntu Utopic)
   Importance: Undecided
       Status: Confirmed

** Changed in: linux (Ubuntu Utopic)
       Status: Confirmed => Fix Committed

** Changed in: linux (Ubuntu Utopic)
     Assignee: (unassigned) => Tim Gardner (timg-tpi)

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  ISST-KVM: R2-0: xmon disabled in Ubuntu

Status in “linux” package in Ubuntu:
  Fix Committed
Status in “linux” source package in Utopic:
  Fix Committed

Bug description:
  ---Problem Description---
  The Ubuntu kernels currently have xmon disabled. xmon is a standard debugging interface on power platforms and is expected to be compiled in to enable for debugging. Please enable CONFIG_XMON.
  ---uname output---
  Linux actg1 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:54 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux
  Machine Type = 8247-22L 
  ---Steps to Reproduce---
  Run the following command: 
  echo 1 > /proc/sys/kernel/sysrq
  Try to invoke xmon by inputting ctrl + o, x
  System should drop into xmon, but the following message is printed instead: "[229073.090037] SysRq : This sysrq operation is disabled."
  14.10 is also the same:

  root@hatg5:~# grep XMON /boot/config-3.16.0-8-generic
  # CONFIG_XMON is not set
  root@hatg5:~# uname -a
  Linux hatg5 3.16.0-8-generic #13-Ubuntu SMP Wed Aug 13 17:11:23 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux

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