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:
Jul. 14, 2020
Filed:
Jun. 22, 2018
Applicant:
Vmware, Inc., Palo Alto, CA (US);
Inventors:
Michael Wei, Palo Alto, CA (US);
Dan Tsafrir, Sunnyvale, CA (US);
Nadav Amit, Mountain View, CA (US);
Assignee:
VMware, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/54 (2013.01); G06F 12/1009 (2016.01); G06F 12/14 (2006.01); G06F 21/57 (2013.01); G06F 21/52 (2013.01); G06F 21/74 (2013.01);
U.S. Cl.
CPC ...
G06F 21/54 (2013.01); G06F 12/1009 (2013.01); G06F 12/1441 (2013.01); G06F 21/52 (2013.01); G06F 21/577 (2013.01); G06F 21/74 (2013.01); G06F 2212/1044 (2013.01); G06F 2212/1052 (2013.01); G06F 2212/657 (2013.01); G06F 2221/034 (2013.01);
Abstract
The present disclosure addresses the meltdown vulnerability resulting from speculative execution in a multi-core processing system. The operating system (OS) can be loaded for execution on one of several processing cores (OS core), while an application can be loaded for execution on another of the processing cores (application core). The OS core uses process page tables that map the entire kernel address space to physical memory. Conversely, the application core uses pages tables that map only a portion of the kernel address space to physical memory.