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:
Sep. 09, 2025
Filed:
Mar. 23, 2022
Applicant:
Red Hat, Inc., Raleigh, NC (US);
Inventor:
Michael Tsirkin, Yokneam Illit, IL;
Assignee:
Red Hat, Inc., Raleigh, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/455 (2018.01); G06F 9/48 (2006.01);
U.S. Cl.
CPC ...
G06F 9/45558 (2013.01); G06F 9/4812 (2013.01); G06F 9/485 (2013.01);
Abstract
Efficient central processing unit overcommit for virtual machines with symmetric multi-processing may be provided by, in response to receiving a preemption-disable request on behalf of a virtual machine (VM) running on a physical central processing unit (PCPU), initiating a counter on the PCPU; in response to receiving a preempting task from a hypervisor to perform on the PCPU, checking a counter status for the counter; in response to the counter status being active: performing an ongoing task from the VM on the PCPU; and delaying performance of the preempting task until the counter status is inactive.