Object sealing for cache coherency for shared memory

Abstract

This disclosure provides methods, devices, and systems for memory management. The present implementations more specifically relate to techniques for providing shared memory services over a Compute Express Link (CXL) fabric. In some aspects, a memory management system may include a shared memory (SM) manager and multiple SM libraries each associated with a respective host device coupled to a shared memory via a CXL fabric. In some implementations, an SM library may negotiate read or write 'locks' with the SM manager for an object in shared memory, where a read-lock grants the associated host device read access to the object and a write-lock grants the associated host device write access to the object. In some implementations, the SM manager may grant any number of read-locks, but only one write-lock, to any object in shared memory so that the object becomes immutable once the host device relinquishes its write-lock for the object.