Resource: LCA13 Name: KVM for Core, LEG and LNG Date: 06-03-2013 Speaker: Geoff Levand

1. ASIA 2013 (LCA13)
KVM for Core, LEG and LNG
Status and feedback session

2. ASIA 2013 (LCA13)
www.linaro.org
Agenda
Team and Project Intro
Project Scope
KVM Status
QEMU Status
Questions and Discussion

3. ASIA 2013 (LCA13)
www.linaro.org
The Virtualization Team
Serge Broslavsky
Project Manager
UTC+2:00
Geoff Levand
Tech Lead
UTC-8:00
Peter Maydell
Engineer
UTC
John Rigby
Engineer
UTC-7:00
Andre Przywara
Engineer
UTC+1:00
Anup Patel
Engineer
UTC+5:30
Pranavkumar Sawargaonkar
Engineer
UTC+5:30

4. ASIA 2013 (LCA13)
www.linaro.org
Community Friends
Marc Zyngier
KVM Upstream Maintainer
UTC
Christoffer Dall
KVM Upstream Maintainer
UTC-5:00

5. ASIA 2013 (LCA13)
www.linaro.org
Linaro Virtualization Project
Comprized of assignees from different Linaro working groups
Regards LEG as a primary client (LNG to follow)
Works in upstream
No non-public code
Works almost around the clock (UTC+5:30 to UTC-8:00)
Team wiki: https://wiki.linaro.org/LEG/Engineering/Virtualization
IRC: #linaro on freenet

6. ASIA 2013 (LCA13)
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Project Scope – 32 bits

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Project Scope – 64 bits

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KVM / {arm,arm64} status
Marc Zyngier <marc.zyngier@arm.com>

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KVM / arm
Entered mainline during the 3.9 merge window
Mandates Virtualization Extentions and LPAE
Supports Cortex-A15 SMP (both guest and host)
Supports VGIC and generic timers
Tested on VE-TC2, Exynos5, OMAP5
Uses QEMU or KVM Tool for platform emulation
Maintainer: Christoffer Dall

10. ASIA 2013 (LCA13)
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KVM / arm64
Patches just posted. Reviews, please!
http://www.spinics.net/lists/arm-kernel/msg227739.html
Mandates Virtualization Extentions, VGIC and generic timers
Supports Foundation Model, Cortex-A57 SMP (both guest and host)
Supports two different page sizes: 4kB (3 levels) and 64kB (2 levels)
Supports both 32bit and 64bit guests
Uses KVM Tool for platform emulation
Maintainer: Marc Zyngier

11. ASIA 2013 (LCA13)
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KVM / {arm,arm64}: future plans
Live migration
Huge pages support (WIP)
SystemMMU/IOMMU driver (WIP)
Next generation interrupt controllers
Cortex-A7 support
big.LITTLE ARMv7 support
Feature parity with x86
BE-on-LE support (WIP)

12. ASIA 2013 (LCA13)
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KVM tool
Implementation of platform emulation for KVM
No instruction emulation
Small, neat, follows the kernel's coding convention
On ARM, only paravirtualized backends (virtio-mmio).
Fully supported by mach-virt(!)
Unlikely to ever be merged in the mainline kernel
arm/arm64 port maintained by Will Deacon

13. ASIA 2013 (LCA13)
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KVM: useful pointers
Git trees:
arm:
git://github.com/virtualopensystems/linux-kvm-arm.git
arm64:
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/kvm
KVM tool:
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux.git kvmtool/next
Mailing lists:
kvmarm@lists.cs.columbia.edu
kvm@vger.kernel.org
linux-arm-kernel@lists.infradead.org

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QEMU {arm,arm64}
Peter Maydell <peter.maydell@linaro.org>

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QEMU
Platform emulation for KVM
Also works as a complete CPU emulator without KVM
Solid, production-proven, fully featured
Large codebase that can be a bit unwieldy to work with
ARM target maintained by Peter Maydell
Mailing list: qemu-devel@nongnu.org
Web site: http://www.qemu.org/

16. ASIA 2013 (LCA13)
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QEMU for ARMv7: what's been done?
KVM support: initial patches in the process of being upstreamed
Guest sees a Versatile Express A15 system
Cleanup of virtio so we can do memory-mapped virtio rather than PCI

17. ASIA 2013 (LCA13)
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QEMU for ARMv7: what's next?
VM migration
show guest a stripped-down ("mach-virt") system, not VExpress
finish virtio work
support running on big.LITTLE hosts
testing and validation
Long list of "someday, maybe" items:
power management? ; debug and profiling support? ; IOMMU? ;
security audit? ; realtime support? big-endian? ...

18. ASIA 2013 (LCA13)
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QEMU for ARMv8: what's next?
everything!
system models
instruction emulation
KVM support
everything we need to do or have done for v7 KVM support

19. ASIA 2013 (LCA13)
Expectations towards KVM/QEMU
Audience looking at this slide and reading this title

20. ASIA 2013 (LCA13)
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KVM / QEMU Expectations
What are the use cases?
What are the critical features?
What are the priorities?
It's your turn, please speak up!

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ASIA 2013 (LCA13)