[XenPPC] NAP state

[Amos Waterland <apw@xxxxxxxxxx>]

Just as a sanity check, is the intention is to put the processor in the
NAP state when .sleep() is invoked?  If so, is the following behavior
expected?

@@ -395,12 +396,34 @@ static void __init __start_xen(multiboot
     console_endboot();
 
+    while (1) {
+        long before, after;
+        before = mftb(); sleep(); after = mftb();
+        printk("hid0 = %lx: slept for %ld timebase ticks (%ld seconds)\n", 
+               mfhid0(), after - before, (after - before) / timebase_freq);
+    }

     /* Hide UART from DOM0 if we're using it */
     serial_endboot();

(XEN) hid0 = 51010180000000: slept for 1952282840 timebase ticks (9 seconds)
(XEN) hid0 = 51010180000000: slept for 52834590 timebase ticks (0 seconds)
(XEN) hid0 = 51010180000000: slept for 2078791813 timebase ticks (10 seconds)
(XEN) hid0 = 51010180000000: slept for 52797943 timebase ticks (0 seconds)
(XEN) hid0 = 51010180000000: slept for 2078719926 timebase ticks (10 seconds)
(XEN) hid0 = 51010180000000: slept for 52860659 timebase ticks (0 seconds)
(XEN) hid0 = 51010180000000: slept for 2078655488 timebase ticks (10 seconds)
(XEN) hid0 = 51010180000000: slept for 52932165 timebase ticks (0 seconds)
(XEN) hid0 = 51010180000000: slept for 2078598776 timebase ticks (10 seconds)
...


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