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Re: [Xen-devel] VMX-preemption timer

  • To: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
  • From: OK <olga.krivchikova@xxxxxxxxx>
  • Date: Fri, 24 Apr 2009 19:10:35 +0400
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 24 Apr 2009 08:11:06 -0700
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On Fri, Apr 24, 2009 at 6:48 PM, Tim Deegan <Tim.Deegan@xxxxxxxxxx> wrote:
Hi,

At 15:47 +0100 on 24 Apr (1240588035), OK wrote:
> Hi everybody!
> I am new in Xen and have a problem.
> I use Intel-VT processor, Xen 3.3.0 (built from sources) and hvm-domain Windows Vista. I read in Intel Software Developer Manual about VMX-preemption timer. I want to cause periodic VM-exits and use this feature to do it. But I can't find preemption timer in Xen source codes. For example, there is not preemption timer among vmx exit reasons in \include\asm-x86\hvm\vmx\vmx.h. Does anybody know about VMX-preemption timer support in Xen?

This feature's not used (or needed) by Xen.

Thanks. But does Xen have any "timer"-feature  to initiate periodic exits (period about 5-10 minutes)?

Olga

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