Scaling KVM and Its Community
summary
KVM now spans six architectures, RISC-V ported in 2021, and contains roughly 150,000 lines of KVM code across 300+ files with over 90,000 lines of tests; in 2022 about 150 people submitted ~1,100 patches. Review latency and flat maintainer count vs doubling contributors create bottlenecks; roughly 1 in 5 commits are bug fixes. Proposals: document merge/testing expectations, automate per-series CI and unit/self-tests, share common code across arches, and require better tests so merges introduce fewer long-lived quirks.
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