What ioctl(KVM_RUN) Does: The VM Exit Loop Explained
The previous article established that guest code runs natively until it touches a device, at which point control has to reach QEMU. ioctl(vcpu_fd, K…
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Porting my Rust KVM hypervisor to ARM64: Running the binary
Recap In the previous article we ported the register handling of my Rust KVM hypervisor from x86 to ARM64. By tracing QEMU with strace and inspectin…
Building a KVM Virtual Machine in Rust: Memory Setup
Recap This is a continuation of my previous article which dealt with reverse-engineering QEMU with strace to learn how KVM works. Now it's time to t…
The "Lift-and-Shift to KVM" Fallacy
The VM conversion completed without errors. Every workload made it across. The migration dashboard showed green, the project lead closed the ticket,…