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. 10, 2024
Filed:
Mar. 11, 2020
Amazon Technologies, Inc., Reno, NV (US);
Daniel John Farrell, Seattle, WA (US);
Amazon Technologies, Inc., Reno, NV (US);
Abstract
Vulnerabilities to physical memory, such as server dynamic random access memory (DRAM) with error correction code (ECC) capability, can be mitigated though the use of guard pages allocated in that physical memory. Physical memory pages can be mapped to virtual memory pages of a contiguous virtual address space. When an error such as a bit flip is detected in a physical memory page, the data from that physical memory page can be copied to a protected page, such as a guard page or page isolated from other sensitive data. Information such as an error correction code (ECC) can be used to determine and correct the erroneous bit. The mappings in a related page table can be updated such that the same virtual pages or addresses are then mapped to the guard page that now includes the relevant data.