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RE: [Xen-ia64-devel] [PATCH][UPDATE]Fix context switch to idle domain


  • To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>
  • Date: Wed, 21 Dec 2005 08:35:10 -0800
  • Delivery-date: Wed, 21 Dec 2005 16:37:58 +0000
  • List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: AcYFOdKc+TTbpoDqSruGTr85ud672ABEp0iw
  • Thread-topic: [Xen-ia64-devel] [PATCH][UPDATE]Fix context switch to idle domain

Committed. 

> -----Original Message-----
> From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf 
> Of Tian, Kevin
> Sent: Tuesday, December 20, 2005 12:49 AM
> To: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-ia64-devel] [PATCH][UPDATE]Fix context switch 
> to idle domain
> 
> (please ignore previous one)
> 
> Don't change vhpt table when switching to idle domain, or else we have
> to restore region registers too. Actually this change can also improve
> performance a bit, since idle domain can inherit most of prev's
> environment.
> 
> Without this change, we kept seeing vhpt fault when running host SMP.
> 
> Also removed print info within idle loop, since idle domain gets more
> chance to run on another CPU.
> 
> Signed-off-by Kevin Tian <kevin.tian@xxxxxxxxx>
> 
> Thanks,
> Kevin
> 

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