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. 12, 2021
Filed:
Oct. 25, 2019
Red Hat, Inc., Raleigh, NC (US);
Bandan Das, Westford, MA (US);
Karen L. Noel, Westford, MA (US);
Red Hat, Inc., Raleigh, NC (US);
Abstract
Controlled use of a memory monitor instruction and memory wait instruction in a virtualized environment. A hypervisor executing on a computing host determines that a first process executing in a virtual machine (VM) attempted to execute a memory monitor instruction. The hypervisor determines a memory range associated with the memory monitor instruction. A virtual machine control structure that corresponds to the VM is altered to prevent a virtual machine exit upon a subsequent execution of a memory wait instruction by the first process. The hypervisor executes the memory monitor instruction to cause the memory range to be monitored for a store command to the memory range. The hypervisor returns control to the first process to begin execution at an instruction after the memory monitor instruction.