K 10
svn:author
V 6
royger
K 8
svn:date
V 27
2016-05-02T18:23:48.695426Z
K 7
svn:log
V 395
xen/control: improve suspend/resume

Implement several small improvements to the suspend/resume Xen sequence:

 - Call the power_suspend_early event before stopping all processes.
 - Stop all processes. This was done implicitly previously by putting all
   the CPUs in a known IPI handler.
 - Warm up the timecounter.
 - Re-initialize the time of day register.

Sponsored by: Citrix Systems R&D

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