FLEXIBLE COUNTER SYSTEM FOR MEMORY PROTECTION

摘要

The present disclosure is directed to a flexible counter system for memory protection. In general, a counter system for supporting memory protection operations in a device may be made more efficient utilizing flexible counter structures. A device may comprise a processing module and a memory module. A flexible counter system in the memory module may comprise at least one data line including a plurality of counters. The bit-size of the counters may be reduced and/or varied from existing implementations through an overflow counter that may account for smaller counters entering an overflow state. Counters that utilize the overflow counter may be identified using a bit indicator. In at least one embodiment selectors corresponding to each of the plurality of counters may be able to map particular memory locations to particular counters.

主权项

1. A device including memory protection, comprising:
a memory module including at least a flexible counter system; and a processing module including at least a memory encryption engine to at least one of decrypt encrypted data loaded from the memory module using security metadata generated at least in part by the flexible counter system, or encrypt plaintext data prior to storage in the memory module using the security metadata.