lca13: kvm for core, leg and lng
DESCRIPTION
Resource: LCA13 Name: KVM for Core, LEG and LNG Date: 06-03-2013 Speaker: Geoff LevandTRANSCRIPT
ASIA 2013 (LCA13)
KVM for Core, LEG and LNGStatus and feedback session
ASIA 2013 (LCA13)
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Agenda
Team and Project Intro
Project Scope
KVM Status
QEMU Status
Questions and Discussion
ASIA 2013 (LCA13)
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The Virtualization Team
Serge BroslavskyProject ManagerUTC+2:00
Geoff LevandTech LeadUTC-8:00
Peter MaydellEngineerUTC
John RigbyEngineerUTC-7:00
Andre PrzywaraEngineerUTC+1:00
Anup PatelEngineerUTC+5:30
Pranavkumar SawargaonkarEngineerUTC+5:30
ASIA 2013 (LCA13)
www.linaro.org
Community Friends
Marc ZyngierKVM Upstream MaintainerUTC
Christoffer DallKVM Upstream MaintainerUTC-5:00
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
ASIA 2013 (LCA13)
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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
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
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)
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
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:
ASIA 2013 (LCA13)
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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: [email protected]
Web site: http://www.qemu.org/
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
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? ...
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
ASIA 2013 (LCA13)
Expectations towards KVM/QEMUAudience looking at this slide and reading this title
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!
More about Linaro Connect: www.linaro.org/connect/ More about Linaro: www.linaro.org/about/
More about Linaro engineering: www.linaro.org/engineering/
ASIA 2013 (LCA13)