Architecture of the Kernel-based Virtual Machine …

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Copyright Siemens AG 2010. All rights TechnologyArchitecture of the Kernel-based Virtual Machine (KVM)Jan Kiszka, Siemens AG, CT T DE IT 1Corporate Competence Center Embedded 22010-09-23 Siemens AG, Corporate TechnologyJan Kiszka, CT T DE IT 1Agenda Introduction Basic KVM model Memory API Optimizations Paravirtual devices OutlookSlide 32010-09-23 Siemens AG, Corporate TechnologyJan Kiszka, CT T DE IT 1Virtualization of Commodity ComputersCPUMMUInstructionSetClocks&Time rsBusses&I/O DevicesInterruptControllersMemoryOn-Chip ResourcesSlide 42010-09-23 Siemens AG, Corporate TechnologyJan Kiszka, CT T DE IT 1Virtualizing the x86 Instruction Set Architecturex86 originally virtualization unfriendly No hardware provisions Instructions behave differently depending on privilege context Performance suffered on trap-and-emulate CISC nature complicates instruction replacements Early approaches to x86 virtualization Binary translation ( VMware)

Slide 7 2010-09-23 Jan Kiszka, CT T DE IT 1 © Siemens AG, Corporate Technology The KVM Model Processes can create virtual machines VMs can contain

  Based, Virtual, Machine, Kernel, Kernel based virtual machine