~/talk

Compute Express Link in QEMU

Talkat FOSDEM 2021 · on Saturday, 2021-02-06· at 17:00· D.emulator

speaker

name:Ben Widawsky

resources

video:https://video.fosdem.org/2021/D.emulator/qemu.mp4

slides:https://fosdem.org/2021/schedule/event/qemu/attachments/slides/4370/export/events/attachments/qemu/slides/4370/bwidawsk_FOSDEM21.pdf

https://fosdem.org/2021/schedule/event/qemu/attachments/paper/4371/export/events/attachments/qemu/paper/4371/bwidawsk_FOSDEM21_notes.pdf

summary

Covers adding Compute Express Link (CXL) 2.0 support to QEMU so driver development could proceed before hardware availability; explains CXL basics, the QEMU architecture and implementation choices used to emulate CXL, and the challenges encountered enabling CXL 2.0 in QEMU. Also outlines how the emulation-driver development feedback loop exposed specification issues and points where contributors can help.

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