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Re: [Xen-devel] Writing VM Exit handlers in Xen


  • To: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
  • From: Patrick Colp <pjcolp@xxxxxxxxx>
  • Date: Thu, 29 Jul 2010 09:16:07 -0400
  • Cc: Jonathan White <jonxwhite@xxxxxxxxx>, Xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 29 Jul 2010 06:25:29 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

>> I would like to start write some simple Intel-VT VMExit handlers in Xen -
>> for e.g. when CPUID is executed, or some other VM Exit condition is
>> satisfied.
>> How can I define new VMExit conditions for a Intel-VT based HVM guest
>> (WinXP) in Xen? and how can I write simple handlers for those conditions?

You can't define new VMExit conditions. For all the possible exit
conditions, look at Intel's "Intel 64 and IA-32 Architectures Software
Developer's Manual", Volume 3B. In the current (or near current)
edition, you want to look at chapter 24 - VM Exits.


Patrick

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