Cross-Domain CXL.mem Translations for Memory Disaggregation, Prefetch, and Multi-Host Operation, Enabling Composable Abstraction and Resource Isolation

A system comprising:

• first and second entities;
• a computer configured to:
• receive a first CXL.mem Master-to-Subordinate (M2S) request from the first entity, wherein CXL denotes Compute Express Link;
• translate the first CXL.mem M2S request to a second CXL.mem M2S request, wherein value of at least one field, selected from MemOpcode, Tag, or Address, is different between the first and second CXL.mem M2S requests;
• and
• send the second CXL.mem M2S request to the second entity.

A method for enabling multi-host access to a Compute Express Link (CXL) device, comprising:

• receiving, from a first entity, a first CXL.mem Master-to-Subordinate (M2S) request carrying a first physical address;
• receiving, from a second entity, a second CXL.mem M2S request carrying a second physical address;
• translating the first and second physical addresses to third and fourth physical addresses within an address space utilized by a CXL device;
• generating third and fourth CXL.mem M2S requests comprising the third and fourth physical addresses, respectively;
• and
• sending the third and fourth CXL.mem M2S requests to the CXL device.