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Invalidating translation lookaside buffer entries in a virtual machine (VM) system

  • US 8,543,772 B2
  • Filed: 12/02/2010
  • Issued: 09/24/2013
  • Est. Priority Date: 09/30/2003
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a hardware managed stack to hold a plurality of virtual machine extension (VMX) mask word values corresponding to a plurality of virtual machines (VMs), wherein a current VMX mask word value of the plurality of VMX mask word values, which corresponds to a current VM of the plurality of VMs, is to be utilized to mask access by the current VM to a VMX control word; and

    a translation lookaside buffer (TLB) having a plurality of TLB entries, wherein a TLB entry of the plurality of TLB entries is to be associated with a virtual machine extension (VMX) tag word, and invalidation logic to determine the TLB entry is to be invalidated responsive to a comparison of the VMX tag word and the VMX control word indicating the TLB entry is to be invalidated in response to an invalidation operation being performed.

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