The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2017
Filed:
Sep. 25, 2015
Intel Corporation, Santa Clara, CA (US);
Jun Nakajima, San Ramon, CA (US);
Asit K. Mallick, Saratoga, CA (US);
Harshawardhan Vipat, San Jose, CA (US);
Madhukar Tallam, Fremont, CA (US);
Manohar R. Castelino, Santa Clara, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Technologies for multi-level virtualization include a computing device having a processor that supports a root virtualization mode and a non-root virtualization mode. A non-root hypervisor determines whether it is executed under control of a root hypervisor, and if so, registers a callback handler and trigger conditions with the root hypervisor. The non-root hypervisor hosts one or more virtual machines. In response to a virtual machine exit, the root hypervisor determines whether a callback handler has been registered for the virtual machine exit reason and, if so, evaluates the trigger conditions associated with the callback handler. If the trigger conditions are satisfied, the root hypervisor invokes the callback handler. The callback handler may update a virtual virtualization support object based on changes made by the root hypervisor to a virtualization support object. The root hypervisor may invoke the callback handler in the non-root virtualization mode. Other embodiments are described and claimed.