A minimal Zig time-sharing kernel for RISC-V
Published on May 12, 2026, the article describes building a minimal time-sharing kernel in Zig for RISC-V on OpenSBI, including S-mode traps and timer-triggered context switching.
Source: Um kernel de time-sharing mínimo em Zig para RISC-V (popovicu.com). Text prepared with AI from this source.
What happened and what to do
Published on May 12, 2026, the article provides a walkthrough for building a minimal time-sharing kernel in Zig for RISC-V on OpenSBI. Its scope includes S-mode traps and timer-triggered context switching performed by replacing the stack pointer. The article covers fundamental kernel mechanisms and context switching in this environment.
For a company evaluating embedded software on RISC-V, this material can inform an assessment of scheduling and isolation requirements, as well as task-behavior tests and monitoring. The practical response is to validate system needs and implement appropriate mechanisms and observability—without assuming a custom kernel is the right choice for every project.
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