Wear leveling in a memory system

摘要

Embodiments are disclosed for replacing one or more pages of a memory to level wear on the memory. In one embodiment, a system includes a page fault handling function and a memory address mapping function. Upon receipt of a page fault, the page fault handling function maps an evicted virtual memory address to a stressed page and maps a stressed virtual memory address to a free page using the memory address mapping function.

主权项

1. A device comprising:
a memory to:
receive a page fault indicative of an access to a virtual memory address unmapped in the memory;in response to receiving the page fault,
map the unmapped virtual memory address to a stressed page of the memory; andmap a stressed virtual memory address to a free page of the memory, wherein the stressed page is determined based on one or more durability parameters, the durability parameters comprising an error correction parameter representing a frequency of detected and corrected errors in each of the pages of the memory.