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:
Mar. 12, 2013
Filed:
Dec. 08, 2009
Xiao Tao Chang, Beijing, CN;
Huayong Wang, Beijing, CN;
Kun Wang, Beijing, CN;
Yu Zhang, Beijing, CN;
Xiao Tao Chang, Beijing, CN;
Huayong Wang, Beijing, CN;
Kun Wang, Beijing, CN;
Yu Zhang, Beijing, CN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A Simulator and a simulating method for running a guest program in a host are disclosed. The simulator includes: an initialization device configured for setting content of a hypervisor page table in the host, the hypervisor page table mapping a guest physical address space to a host physical address space. The simulator further includes a binary translation device configured for employing a program logical address to perform a memory access in code translation. The simulator also includes a miss handling device configured for updating a guest translation look-aside buffer by treating a miss in a host translation look-aside buffer caused by the execution of the translated code as a miss in the guest translation look-aside buffer, wherein the host translation look-aside buffer is configured to buffer entries for mapping addresses in a guest program logical address space to addresses in the guest physical address space. The simulator further includes an update tracing device configured for, in response to the update to the guest translation look-aside buffer, perform the update to the host translation look-aside buffer. Also disclosed is a method for running a guest program in a host.