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RE: [Xen-ia64-devel] RFC: ptc.ga implementation for SMP-g

  • To: "Tristan Gingold" <Tristan.Gingold@xxxxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
  • Date: Wed, 5 Apr 2006 15:24:14 +0800
  • Delivery-date: Wed, 05 Apr 2006 00:24:27 -0700
  • List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: AcZYfxSSL5lFZdtqS4qKWUz9EX7JnwAArtfA
  • Thread-topic: [Xen-ia64-devel] RFC: ptc.ga implementation for SMP-g
>From: Tristan Gingold 
>Sent: 2006?4?5? 15:08
>> Sorry for not clear, IMO vcpu1 doesn't need to wait vcpu2.
>I don't think so.  This is not the specification.
>If vcpu1 doesn't wait vcpu2, there may be several ptc.ga in flight, which is
>not an easy task.
>
Agree now, so we sort back to IPI.

>> Vcpu1 also doesn't wait vcpu2 by using IPI, is here any issue?
>The linux/xen smp_call_function_single has a wait flag.
>
>Tristan.

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