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:
Sep. 12, 2023
Filed:
Dec. 10, 2021
Amazon Technologies, Inc., Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
A computer system and methods are disclosed for mitigating side-channel attacks using memory aliasing. The computer system includes a memory, a memory controller and a cache. Responsive to determining to share a memory location among processes, the address of the memory may be aliased to another address within the same address space, with the address and aliased address assigned to respective ones of the processes. The memory controller manages the address space according to an aliasing region and a non-aliasing region, with addresses corresponding to the non-aliasing region being passed through to the memory. Addresses corresponding to the aliasing region are translated by the memory controller to match corresponding non-aliased memory addresses allowing aliased and non-aliased addresses to access same memory locations. A cache may cache accesses to memory addresses, including the non-aliased and aliased addresses, with different cache locations for selected according to the respective addresses of memory.