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:
Aug. 07, 2012
Filed:
Oct. 29, 2009
Henri H. Van Riel, Merrimack, NH (US);
Gleb Natapov, Herzliya, IL;
Henri H. van Riel, Merrimack, NH (US);
Gleb Natapov, Herzliya, IL;
Red Hat, Inc., Raleigh, NC (US);
Abstract
A method and system to handle an asynchronous page fault in a virtual machine system. A computer hosts a virtual machine that includes a virtual central processing unit (CPU). The virtual CPU requests access to a page that is not resident in memory. The host operating system of the computer receives an indication of a page fault, and informs the virtual CPU of the page fault. The host operating system provides an identifier associated with the page fault. The host operating system performs page swapping operating in parallel with a new task rescheduled by the virtual CPU, and sends a wake-up signal to the virtual CPU when the page has been brought back into the memory.