Xen.org has several initiatives that aim to have an impact onOpenStack adoption and feature richness. This talk will include adiscussion on the Xen Cloud Platform (XCP), the XCP toolstack (XAPI)port to popular Linux distributions, and the Xen on ARM initiative. XCP combines the Xen hypervisor with enhanced security, storage, andnetwork virtualization technologies to offer a rich set of virtualinfrastructure cloud services. These XCP cloud services can beleveraged by OpenStack cloud providers to enable isolation andmulti-tenancy capabilities in their environments. XCP also providesthe user requirements of security, availability, performance, andisolation for private and public OpenStack cloud deployments. Xen.org is working to make XCP and OpenStack work seamlessly so thattogether they can be the ultimate open source cloud solution. Inaddition to deploying XCP as a separate component with OpenStack,Xen.org is simultaneously porting the XCP toolstack (XAPI) to Linuxdistributions, which will give cloud administrators an easy-to-installOpenStack and Xen-based integrated alternative. Finally, industry thought leaders, such as Mark Shuttleworth, aresupporting the adoption of ARM in server-class systems. Consequently,the port of Xen to the ARM platform could make it possible forOpenStack and Xen to lead the way into the future of ARM-based clouddeployments.

1. Xen.org's OpenStack-related Initiatives
Todd Deshane and Ewan Mellor
OpenStack Conference - Boston
October 7, 2011

2. Outline
● Xen.org's OpenStack-related Initiatives
○ Xen Cloud Platform (XCP)
○ Project Kronos
○ Xen on ARM

3. Xen.org (in the Cloud) History

4. Global Public Computing
"This dissertation proposes a new distributed computing
paradigm, termed global public computing, which allows any
user to run any code anywhere. Such platforms price
computing resources, and ultimately charge users for resources
consumed."
- Evangelos Kotsovinos, PhD dissertation, 2004

5. Xen.org (in the Cloud) History

6. XCP Overview

7. XCP and OpenStack

8. Project Kronos Overview

9. Project Kronos Overview
Xen API (XAPI)
Hypervisor

10. Project Kronos and OpenStack
Xen API (XAPI)
Hypervisor

11. XCP vs. Project Kronos
XCP Project Kronos
Pros Pros
● Isolation of compute VM ● Simple install
● Security properties ● Flexibility
● Pre-package + appliance ● Simpler overall
Cons Cons
● Slightly more complex ● Less isolation
● Less flexible ● Nova is a potential entry
point to Dom0

12. Xen on ARM

13. Xen on ARM
So Far:
● Xen paravirtualization for ARM v5 - v7
● Real-time guarantees in a virtualized environment
Next:
● Full ARM virtualization to Xen
○ Using ARMv7 virtualization extensions for the Cortex A15
● Merge ARM support into mainline Xen by 2012