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


This bug was fixed in the package linux - 3.16.0-14.20

linux (3.16.0-14.20) utopic; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1366431

  [ dann frazier ]

  * [Config] CONFIG_HW_RANDOM_XGENE=m on arm64

  [ Manish Chopra ]

  * SAUCE: bnx2x: Configure device endianity on driver load and reset
    endianity on removal.
    - LP: #1356948

  [ Tim Gardner ]

  * [Config] CONFIG_XMON=y
    - LP: #1365655
  * [Config] CONFIG_KVM_BOOK3S_64=m for ppc64el
    - LP: #1362514
  * [Config] CONFIG_KVM_BOOK3S_64_HV=m
    - LP: #1362514

  [ Upstream Kernel Changes ]

  * hwrng: xgene - add support for APM X-Gene SoC RNG support
    - LP: #1365593
  * Documentation: rng: Add X-Gene SoC RNG driver documentation
    - LP: #1365593
  * arm64: dts: add random number generator dts node to APM X-Gene
  * KVM: PPC: Book3S: Move vcore definition to end of kvm_arch struct
    - LP: #1362514
  * KVM: Move more code under CONFIG_HAVE_KVM_IRQFD
    - LP: #1362514

  [ Upstream Kernel Changes ]

  * rebase to v3.16.2
    - LP: #1358116
    - LP: #1334950
    - LP: #1350148
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Sat, 06 Sep 2014 07:52:15 -0700

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

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

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

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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