https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144991#M78382 <P>Hello !</P> <P>Let’s say hypervisor runs virtual machine with VPIDs set to 1 for all virtual cores(Vmcs). While this hv and VM is running, I start another hv.</P> <P>Will this second hv be able to generate unique VPID for VM it wants to run? If not and second hv sets VPID for it’s VM also to 1, will one of the VM use stale entries in TLB ?</P> Sun, 24 Jun 2018 14:32:43 GMT Sergey_Pisarev 2018-06-24T14:32:43Z https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144991#M78382 <P>Hello !</P> <P>Let’s say hypervisor runs virtual machine with VPIDs set to 1 for all virtual cores(Vmcs). While this hv and VM is running, I start another hv.</P> <P>Will this second hv be able to generate unique VPID for VM it wants to run? If not and second hv sets VPID for it’s VM also to 1, will one of the VM use stale entries in TLB ?</P> Sun, 24 Jun 2018 14:32:43 GMT https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144991#M78382 Sergey_Pisarev 2018-06-24T14:32:43Z https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144992#M78383 <P>Found some info that is related to the hypervisor and VPID that may provide some answers for you:</P> <P><A href="http://www.cs.dartmouth.edu/~sergey/cs108/2014/TorreyGuestLecture-Hypervors.pdf">http://www.cs.dartmouth.edu/~sergey/cs108/2014/TorreyGuestLecture-Hypervors.pdf</A></P> <P>-Thai</P> Thu, 09 Aug 2018 00:07:00 GMT https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144992#M78383 Quoc-Thai_L_Intel 2018-08-09T00:07:00Z https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144993#M78384 <P>Thank you</P> Mon, 10 Sep 2018 19:10:19 GMT https://community.intel.com/t5/Software-Archive/Correct-Virtual-Processor-Identifier-VPID/m-p/1144993#M78384 Sergey_Pisarev 2018-09-10T19:10:19Z