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This conference talk explores the critical role of Linux Kernel Functional Testing (LKFT) in maintaining stability across the diverse Arm ecosystem. Learn why kernel testing is essential as Linux runs on everything from phones to supercomputers, with frequent updates and new Arm hardware creating potential compatibility issues. Discover how LKFT systematically builds and runs tests across arm and arm64 platforms to detect problems early, ensure stability, and support long-term kernel versions. Explore the testing toolkit including kselftest, LTP, KUnit, and kvm-unit-tests, and how each verifies different kernel components. The presentation highlights recent advancements including ARMv9 and virtualization testing on Graviton4 Baremetal and Graviton4 VM. Through real-world examples of problem detection and resolution, understand why developers, testers, and system engineers should leverage LKFT to enhance Linux reliability throughout the Arm ecosystem.
