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Hi all,

Just thought I'd mention that if anyone has been seeing odd idle/system/user 
results in /proc/stats or "top" in a guest with CONFIG_VIRT_CPU_ACCOUNTING_GEN 
enabled (it's automatically selected by CONFIG_NO_HZ_FULL) that it's not your 
imagination or anything you did wrong.

I recently discovered a bug in the kernel which triggers in the above scenario. 
  It appears to have been introduced in kernel version 3.15.  The proposed patch 
is available at:

http://www.spinics.net/lists/kernel/msg2205350.html

Chris