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:
Mar. 13, 2018
Filed:
Nov. 25, 2013
Red Hat Israel, Ltd., Raanana, IL;
Michael Tsirkin, Yokneam, IL;
Gleb Natapov, Raanana, IL;
Red Hat Israel, Ltd., Raanana, IL;
Abstract
A hypervisor of a host receives an indication of an exit from a guest to the hypervisor and a memory-mapped input output (MMIO) address that caused the exit to hypervisor. The hypervisor walks a page table of the guest to identify a guest address associated with the MMIO address that caused the exit to the hypervisor. The hypervisor decodes an instruction of the guest referenced by the guest address to determine a type of operation that the guest intended to execute and a location of MMIO information. The hypervisor records, in a page table entry for the MMIO address of a host page table, an association with the type of operation and the location of the MMIO information. The hypervisor executes the operation on behalf of the guest based on the type of the operation and the MMIO information.