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. 15, 2024
Filed:
Oct. 10, 2022
Red Hat, Inc., Raleigh, NC (US);
Andrea Arcangeli, Imola, IT;
Michael Tsirkin, Lexington, CA (US);
Red Hat, Inc., Raleigh, NC (US);
Abstract
Aspects of the disclosure provide for implementing host address space identifiers for non-uniform memory access (NUMA) locality in virtual machines. A method of the disclosure includes determining, by a virtual machine (VM), that a guest memory page is to be moved from a first virtual NUMA node of the VM to a second virtual NUMA node of the VM. The method also includes updating, one or more designated bits of a guest physical address (GPA) of the memory page to include a host address space identifier (HASID) of the second virtual NUMA node, where the guest page table maps the GPA of the memory page to a corresponding guest virtual address (GVA) of the VM and where the HASID associates the GPA of the memory page with a corresponding virtual NUMA node locality, and accessing by the VM, the updated GPA.