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:
Oct. 28, 2025
Filed:
Jan. 11, 2023
Red Hat, Inc., Raleigh, NC (US);
Michael Tsirkin, Yokneam, IL;
Red Hat, Inc., Raleigh, NC (US);
Abstract
Single-root input-output virtualization (SR-IOV) can be enabled for nested virtual machines using mapping. In one example, a host hypervisor can assign at least two guest virtual functions to a guest virtual machine such that each guest virtual function maps to a respective host virtual function executed by a SR-IOV device. The first guest virtual function of the at least two guest virtual functions can be configured to act as a guest physical function. The host hypervisor can receive a request generated by a nested virtual function assigned to a nested virtual machine hosted by the guest virtual machine. In response to receiving the request, the host hypervisor can translate a guest memory address of the guest physical function to a host memory address for the guest physical function. The host hypervisor can forward the request to the guest physical function for fulfillment using the translated host memory address.