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:
May. 29, 2018
Filed:
Oct. 01, 2013
Red Hat Israel, Ltd., Raanana, IL;
Michael Tsirkin, Yokneam, IL;
Gleb Natapov, Raanana, IL;
Red Hat Israel, Ltd., Raanana, IL;
Abstract
When a guest of a virtual machine attempts to accesses an address that causes an exit from the guest to the hypervisor of a host, the hypervisor receives an indication of an exit by a guest to the hypervisor. The received address is associated with a memory-mapped input-output (MMIO) instruction. The hypervisor determines, based on the received indication, that the exit is associated with the memory-mapped input-output (MMIO) instruction. The hypervisor identifies the address that caused the exit as a fast access address. The hypervisor identifies one or more memory locations associated with the fast access address, where the one or more memory locations store information associated with the MMIO instruction. The hypervisor identifies the MMIO instruction based on the stored information. The hypervisor executes the MMIO instruction on behalf of the guest.