
What ioctl(KVM_RUN) Does: The VM Exit Loop Explained
One system call, looped forever, is what running a virtual machine physically is. Here's what happens inside it — and why some VM exits cost far more than others.
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One system call, looped forever, is what running a virtual machine physically is. Here's what happens inside it — and why some VM exits cost far more than others.

Motivation The time has come: the big test. I got some simple binaries running on my...

Every device your guest sees is C code responding to memory addresses. Once you see the trick, QEMU stops being mysterious and its performance behaviour becomes predictable.

Build a production-like 3-node Kubernetes cluster on your local machine using Terraform, QEMU/KVM, and Cloud-Init. Fully automated from zero to kubectl get nodes in one command. Covers architecture, cloud-init automation, Calico CNI via Tigera Operator, the libvirt provider 0.8→0.9 rewrite, and every version upgrade nuance.

Three pieces, one running VM. Each exists because of a specific gap the layer below it leaves open — which is a better way to learn them than three definitions.
LXC vs. KVM unter Proxmox im echten Einsatz: Konkrete Szenarien, Performance-Messungen und Entscheidungshilfe für Ihre Virtualisierungsstrategie.
LXC-Container oder KVM-VMs in Proxmox? Praxisvergleich mit konkreten Beispielen, Performance-Daten und Entscheidungshilfen für Ihre Infrastruktur.
Der ultimative Praxis-Guide für die Entscheidung zwischen LXC-Containern und KVM-VMs auf Proxmox – mit echten Benchmarks und Szenarien aus 10 Jahren Betriebserfahrung.

A quick, step-by-step guide to creating linked clones (copy-on-write disks) entirely within the Virt-Manager GUI, bypassing the command line and saving gigabytes of disk space.
A lot of homelab notes stop at GRUB: pci=assign-busses iommu=pt intel_iommu=on Enter...

KVM is a kernel module, but virtualization is a hardware feature. Understanding how those two relate is where most people's mental model of KVM breaks.

The ultimate VMware Escape Plan. Master cloud repatriation, secure KVM hypervisors, and slash...