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:
Jan. 10, 2023
Filed:
Oct. 28, 2020
Red Hat, Inc., Raleigh, NC (US);
Michael Tsirkin, Yokneam Illit, IL;
David Hildenbrand, Grasbrunn, DE;
Red Hat, Inc., Raleigh, NC (US);
Abstract
Systems and methods for encryption support for virtual machines. An example method may comprise maintaining, by a virtual machine running on a host computer system, a list of free memory pages, wherein each entry in the list references a set of memory pages that are contiguous in a guest address space; receiving, from a hypervisor of the host computer system, a request for guest memory to be made available to the hypervisor, wherein the request comprises a minimum size of guest memory requested and a maximum size of guest memory; and responsive to identifying, in the list of free memory pages, a set of contiguous guest memory pages that is greater than or equal to the minimum size of memory requested, and less than or equal to the maximum size of memory requested, releasing the set of contiguous guest memory pages to the hypervisor.