Resource: LCE13 Name: Virtualization Forum Date: 09-07-2013 Speaker: Video: https://www.youtube.com/watch?v=DU7uhYNgYTo

1. Linaro
Connect,
Hong Kong
March 2013
July 2013
LCE-13 Dublin
Virtualization Forum

2. www.linaro.org
Introduction
30-June-2013
Hardware
Linux Kernel KVM
Host User
Space
VM 1
Qemu
VM 2
Qemu
KVM Architecture
libvirt
Virtio Virtio
Hardware
Xen Hypervisor
VM 1
DomU
Xen Architecture
Dom0
Xen PV
Drivers
xl
VM 2
DomU
Xen PV
Drivers

3. www.linaro.org
KVM 32-bit Status
30-June-2013
● Mainline since 3.9
● Kernel support almost feature complete:
○ Migration support is in-progress
○ Single-step and breakpoint debugging in future
● Upstream ARMv7-A KVM support merged in QEMU 1.5
● Virtio-MMIO support in-progress (patches on the list)
● mach-virt support in-progress
● Management tools support (ex. libvirt) in future
● Huge pages in-progress
● Test and validation in future

4. www.linaro.org
KVM 64-bit Status
30-June-2013
● Mainline will be released with 3.11
● Requires GICv2 and Generic Timers
● Supported platforms:
○ Foundation Model
○ Cortex-A57
○ APM Development Board
● Supports two different page sizes:
○ 4KB (3 levels)
○ 64KB (2 levels)
● Supports both 32-bit and 64-bit guests
● Full Virtio-based KVM Tool support
● QEMU Support in-progress
● Huge pages in-progress

5. www.linaro.org
Xen Status
30-June-2013
● Dom0 and DomU (guest) support was merged:
○ ARM-v7A: Linux Kernel v3.7
○ ARM-v8A: Linux Kernel v3.11
● Xen Hypervisor separate codebase
● Lifecycle tools (create, destroy, manage) support
● Independent from QEMU
● Single image for multiple platform support
● Future items:
○ Device tree editing
○ Device assignment
○ Migration support
○ IOMMU support
○ Proper bootloader (multiboot, grub, ...) support
○ 64-bit guests support

6. www.linaro.org
Open Discussion
30-June-2013
● KVM VGIC Support:
○ What can we do with v2, what can't we do?
○ Future VGIC support (separate slide)
● KVM SystemMMU / IOMMU support:
○ Why is this needed?
○ Host driver proposed by Will Deacon
○ Need to coordinate with VFIO interface
● KVM BE-on-LE support:
○ Marc Zyngier's project
○ Patches have bitrot, but planning to resurrect
● KVM Guest Perf Support
● KVM Complete PSCI Support

7. www.linaro.org
Future VGIC Support
30-June-2013
● GICv3:
○ System Register Interface
○ Support for more than 8 CPUs
○ ARMv8 only
○ Initial patches in-development

8. More about Linaro: http://www.linaro.org/about/
More about Linaro engineering: http://www.linaro.org/engineering/
How to join: http://www.linaro.org/about/how-to-join
Linaro members: www.linaro.org/members