Memory System Cache Eviction Policies

摘要

A memory system implements a plurality of cache eviction policies and optionally a plurality of virtual address modification policies. A cache storage unit of the memory system has a plurality of cache storage sub-units. The cache storage unit is optionally managed by a cache management unit in accordance with the cache eviction polices. The cache storage sub-units are allocated for retention of information associated with respective memory addresses and are associated with the cache eviction policies in accordance with the respective memory addresses. For example, in response to a reference to an address that misses in a cache, the address is used to access a page table entry having an indicator specifying an eviction policy to use when selecting a cache line from the cache to evict in association with allocating a cache line of the cache to retain data obtained via the address.

主权项

1. A method comprising:
determining, from a plurality of eviction policies, a particular eviction policy associated with information to be retained in a cache; selecting, from a plurality of lines of the cache, a particular one of the lines to evict from the cache based at least in part on the particular eviction policy; and wherein the determining is based at least in part on an address associated with the information.