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RE: [Xen-devel] VMX: emulated guest use SYSENTER MSRs

  • To: "Jan Beulich" <jbeulich@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Li, Xin B" <xin.b.li@xxxxxxxxx>
  • Date: Sat, 7 Jul 2007 15:48:00 +0800
  • Delivery-date: Sat, 07 Jul 2007 00:45:57 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Ace/ytbro1tmw6ldTTqLmqfXHXT+nQAJ02lw
  • Thread-topic: [Xen-devel] VMX: emulated guest use SYSENTER MSRs
>What is the reason for not simply clearing the MSR bitmap bits 
>for these three MSRs, and rather handling the reads/writes in software?

I haven't checked those MSRs, the original concern is we need
save/restore them when context switch, is this needed?

-Xin 

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