Alibaba Cloud Developer

Mar 5, 2025 · Fundamentals

Injecting Timer Interrupts to Simulate Scheduler Events in a Linux VMM

This article explains how to use high‑resolution timers to inject clock interrupts and force a pre‑emptive schedule inside a QEMU/KVM virtual machine monitor, detailing the design, register saving/restoring, code implementation, and hardware constraints for reliable testing of kernel paths.