The Ubuntu-power-systems project

  1. Bug #1685792
  2. Comment #6

Comment 6 for bug 1685792

Revision history for this message
bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2017-05-04 09:01 EDT-------
(In reply to comment #10)
> I built a test kernel with these four patches. The test kernel can be
> downloaded from:
> http://kernel.ubuntu.com/~jsalisbury/lp1685792/

I have verified that the CPU-Hotplug functions correctly on this kernel on a machine booted with upstream skiboot.

It can be observed that the CPUs were put into stop1 on a hotplug.
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root@ubuntu:/home/ego# dmesg | grep -i "deep" | grep stop
[ 0.702036] cpuidle-powernv: Deepest stop: psscr = 0x0000000000300331,mask=0x00000000003003ff
[ 0.702185] cpuidle-powernv: Requested Level (RL) value of first deep stop = 0xf
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