Recap In the previous article../kvm-rust-arm-part1 we ported the register handling of my Rust KVM hypervisor from x86 to ARM64. By tracing QEMU with strace and inspecting the Linux headers, we discovered that ARM64 accesses CPU state through the KV...

Introduction This is a follow-up to my KVM in Rust series where I showed how to use strace and GDB to reverse-engineer QEMU/KVM and reimplement pieces of it in my own hypervisor in Rust. So far this was done on a modern x86 CPU. This time we'll see...

Recap This is a continuation of Part 2../kvm-rust-part2 of KVM in Rust series, where we successfully set up a memory region for our guest VM. Now we will see how to proceed further and run a very simple binary in our hypervisor. Loading the binary...

Recap This is a continuation of my previous article../kvm-rust-part1 which dealt with reverse-engineering QEMU with strace to learn how KVM works. Now it's time to try and follow the steps we got from the strace logs to build our own KVM-based virt...

Motivation I work with virtual machines in QEMU/KVM environment a lot. In order to debug, optimize and customize the VMs requires an in-depth knowledge of both QEMU and KVM, the Linux kernel virtualization subsystem that exposes hardware virtualiza...

A bug in my operating system During a recent visit to my wife's family in Sarajevo, I decided to revisit my hobby operating system in QEMU. I discovered that the boot process consistently froze while printing the BIOS memory map. What initially loo...