CXL Emulation in QEMU - Progress, Status, and Future Directions

Explore the latest developments in CXL emulation within QEMU in this conference talk from the Linux Plumbers Conference. Delve into the rapidly evolving CXL standard and its upstream kernel and tooling support, which often precedes widespread hardware availability. Learn about the expanding emulated feature set and growing contributor base for CXL system emulation in QEMU. After a brief status update, focus on current hot topics such as Multithreaded Devices (MHDs), Dynamic Capacity for memory pooling, Fabric Management, and Type 2 Devices for accelerators. Participate in an open discussion to provide feedback on priority features for future development. Gain valuable insights for CXL kernel developers, fabric management and BMC software developers, CXL application researchers, and those interested in leveraging QEMU for ecosystem development.