** Description changed:

  [Impact]
  This will cause the installer to exit early, causing a kernel panic before 
any prompt to the user. This is restricted to some Power systems.
  
  [Test case]
  A build vmlinux was used to boot the installer, and a prompt was available.
  'add' was written to /sys/devices/vio/uevent was written to, and no error was 
found.
  'add' was written to /sys/devices/vio/*/uevent, and modalias information was 
found when 'udevadm monitor -p' was run in the background.
  
+ A complete install was completed with a fixed kernel.
+ 
  [Regression potential]
  Events may be missing and coldplug/hotplug of vio devices may fail. That was 
tested in the test case and not found to be the case.

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https://bugs.launchpad.net/bugs/1845572

Title:
  udevadm trigger will fail when trying to add /sys/devices/vio/

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