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[Xen-devel] pv_ops (2.6.31) and CONFIG_NO_HZ
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| Subject: | [Xen-devel] pv_ops (2.6.31) and CONFIG_NO_HZ |
| From: | Dan Magenheimer <dan.magenheimer@xxxxxxxxxx> |
| Date: | Mon, 2 Nov 2009 13:45:19 -0800 (PST) |
| Cc: | Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
| Delivery-date: | Mon, 02 Nov 2009 13:46:16 -0800 |
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Has anyone looked at using CONFIG_NO_HZ with an upstream
pv_ops kernel? This seems like an intelligent combination...
since pvclock is a good timesource, it seems like there
should be no reason to have a regular tick, and one
could pack more idle domains into one physical machine.
I tried enabling CONFIG_NO_HZ from an otherwise working .config
file for 2.6.31 and the new kernel (running as a PV domU) panics early
in boot ("Kernel panic -- not syncing: Attempted to kill init!"
with a call trace of syscall_call->sys_exit_group->do_group_exit->
do_exit->panic). So I'm wondering if I did something stupid
or it is known to not work.
Thanks,
Dan
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