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[Xen-devel] Any special treatment when emulating movdqu?

  • To: xen-devel@xxxxxxxxxxxxx
  • From: Razvan Cojocaru <rzvncj@xxxxxxxxx>
  • Date: Tue, 16 Apr 2013 12:37:07 +0300
  • Delivery-date: Fri, 19 Apr 2013 12:38:56 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>


assuming the following scenario: Windows  x64 HVM domU, rIP set just before a movdqu instruction, what happens to rIP after a call to hvm_emulate_one()? Is it possible that rIP is not incremented past the movdqu instruction in this special case (MMX instruction)? Are SSE/MMX instructions being treated in a special manner for HVM guests?

Razvan Cojocaru
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