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[Xen-ia64-devel] RE: [Xen-devel] RE: [Patch] Fix IDLE issue with sedf scheduler on IA64


  • To: "Magenheimer, Dan \(HP Labs Fort Collins\)" <dan.magenheimer@xxxxxx>
  • From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
  • Date: Thu, 14 Jul 2005 10:07:52 +0800
  • Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 14 Jul 2005 02:06:36 +0000
  • List-id: DIscussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: AcWHkNam4njROoPTSRq2Lw7NMoU4SwAE6cuAAAJhJYAAA5hiwAAW6AAg
  • Thread-topic: [Xen-devel] RE: [Patch] Fix IDLE issue with sedf scheduler on IA64

>From: Magenheimer, Dan (HP Labs Fort Collins)
>[mailto:dan.magenheimer@xxxxxx]
>Sent: Wednesday, July 13, 2005 11:09 PM
>
>I think domain0 only goes in the waitq at one point -- when
>it calls pal_halt_light to idle its virtual machine.  This
>case could be easily changed (there is already some code there)
>to ensure domain0 is always runnable.
>
>Dan

As I said in another mail, too many pal_halt_light in Dom0's idle loop
is even worse than current IDLE domain. (At lease unmodified dom0 can't
change that behavior)

Thanks,
Kevin

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