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Jonathan Cameron

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CXL Emulation in QEMU - Progress, status and most importantly what next?Linux Plumbers Conference 20232023-11-13
QEMU now implements CXL emulation beyond basics: Dynamic Capacity support with one-to-8 regions, DPA extent tracking and basic read/write backed by mailbox…
Talk on
Plumbing challenges in Dynamic capacity deviceLinux Plumbers Conference 20232023-11-13
CXL 3.0 allows asynchronous release of extents but kernel code in review keeps the response lightweight and defers real reclamation, with an RFC v3 patch set…
Talk on
PCI device authentication encryptionLinux Plumbers Conference 20232023-11-13
A proof-of-concept in-kernel CMA‑SPDM RFC→non‑RFC patch set now aims to make the PCI core perform device authentication before driver probe, exposing an…
Talk on
Linear types for large-scale systems verificationOOPSLA 20222022-12-05
Integrates linear Dafny with Dafny's SMT backend to push memory reasoning into the type system while keeping SMT for heap invariants; implements…
Talk
CXL 2.0+ Emulation With QEMU Status, requirements and roadmap.Linux Plumbers Conference 20222022-09-12
QEMU now emulates CXL 2.0+ with type 3 devices, root ports and switches, host physical address window support and enough logic to boot interleaved persistent…
Talk
CXL Dynamic Capacity MMLinux Plumbers Conference 20222022-09-12
CXL 3.0 adds Dynamic Capacity Devices that present memory as fixed-size blocks grouped into 1 2 or 8 DCT regions which the host maps via CDT/HDM decoders and…
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10 Years of the Industrial I/O Kernel SubsystemOpen Source Summit Europe & ELC + OpenIoT Summit Europe 20182018-10-22
Ten years of the Industrial I/O subsystem trace a practical evolution: it starts as a sensors-on-athletes hack and grows into a kernel API that now supports…
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