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1. (WO2018119773) NON-VOLATILE MEMORY ACCESS METHOD, DEVICE, AND SYSTEM

Pub. No.:    WO/2018/119773    International Application No.:    PCT/CN2016/112699
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 29 00:59:59 CET 2016
IPC: G06F 12/08
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: XIAO, Shihai
肖世海
FANG, Lei
方磊
LONGNOS, Florian
朗诺斯弗洛里安
Title: NON-VOLATILE MEMORY ACCESS METHOD, DEVICE, AND SYSTEM
Abstract:
A non-volatile memory (NVM) access method, device, and system. The method comprises: an NVM controller receiving a first access request from a processor; determining, according to first address information carried in the first access request, whether the first access request is used to access a page table; and if so, the NVM controller reading a table entry of the page table indicated by the first address information, acquiring, according to second address information recorded in said page table entry and from an AIT, an AIT entry corresponding to the second address information, and caching the AIT entry in an AIT cache. The NVM controller monitors access to a page table from a processor, prefetches, from an AIT, a corresponding AIT entry corresponding to second address information to be accessed, and caches the prefetched AIT entry to an AIT cache, thus reducing the possibility of subsequent AIT cache misses, and accelerating NVM data access.