SlideShare a Scribd company logo
1 of 36
Download to read offline
Xen on ARM
Stefano Stabellini and Ian Campbell
Virtualization:
why it matters
Xen: the gears of the cloud
● large user base
  more than 10 million individuals users


● power the largest clouds in
  production

● not just for servers
Xen: Open Source
GPLv2 with DCO (like Linux)
Diverse contributor community
Xen: Open Source
source:
Mike Day
http://code.ncultra.org
Xen Architecture
   Dom0          DomU           DomU           DomU




 PV backends   PV Frontends   PV Frontends   PV Frontends


 HW drivers



                    Xen


                Hardware
PV Protocols
                     Request Producer
 Backend                                Frontend
 Request Consumer




                                        Response
                                        Consumer




                    Response Producer
Xen Architecture:
driver domains
             Disk Driver       Network
 Dom0                                          DomU
              Domain        Driver Domain



              BlockBack        NetBack        BlockFront


 Toolstack    Disk Driver    Network Driver   NetFront




                               Xen


                            Hardware
Xen: advantages
● small surface of attack

● isolation

● resilience

● specialized algorithms (scheduler)
Xen Architecture:
HVM guests
   Dom0
                              HVM DomU    stubdom         HVM DomU
               IO emulation                      IO emulation
   QEMU



 PV backends                             PV Frontends


 HW drivers



                                Xen


                              Hardware
Xen upstream status
● Xen (Dom0 and DomU support, PV
  frontends and backends) fully upstream in
  Linux since v3.0
  A single 3.0.0 Linux kernel image boots on native, on
  Xen as domU, as dom0 and PV on HVM guest


● Xen upstream in QEMU since v1.3

● Xen supported by SuSE, Debian, Ubuntu,
  Fedora, CentOS, NetBSD and more
ARM Servers
 coming to market
4GB RAM, 4 cores per node
3 x 6 x 4 x 4 = 288 cores
                        single node virtualization -
                                  manageability -
Design goals
● exploit the hardware as much as possible

● one type of guest
  ○ no PVOPs
  ○ use PV interfaces for IO


● Rearchitected for the modern age:
  ○ no QEMU
  ○ no compat code
  ○ no shadow pagetables
Xen on ARM architecture
Xen on ARM architecture
Exploit the hardware
Exploit the hardware virtualization extensions
support as much as possible:

● hypervisor mode
● MMU: second stage translation
   ○ no PV MMU calls: no need for PVOPs
   ○ no shadow pagetables: -10721 lines of code!!
● hypercall: HVC
● generic timers
General Interrupt Controller
an interrupt controller with virtualization support

● use the GIC to inject hardware interrupts into
  dom0

● use the GIC to inject event notifications into
  any guest domains with Xen support
   ○ use PPI 31
   ○ advertise the IRQ via Device Tree
One type of guest to rule
them all
One type of guest
Like PV guests do it:
● support booting from a supplied kernel
● no emulated devices
● use PV interfaces for IO




              no need for QEMU
One type of guest
Like HVM guests do it:
● no PV MMU calls: exploit HW nested paging
● same entry point on native and on Xen
● use Device Tree to discover Xen presence
● no unnecessary devices in the Device Tree
● simple device emulation can be done in Xen


             no need for QEMU
Device Tree
Use Device Tree to describe the virtual platform

hypervisor {
     compatible = "xen,xen", "xen,xen-4.2";
     reg = <0xb0000000 0x20000>;
     interrupts = <1 15 0xf08>;
};
Device Tree
Use Device Tree to describe the virtual platform
                                  version of the Xen ABI
hypervisor {
     compatible = "xen,xen", "xen,xen-4.2";
     reg = <0xb0000000 0x20000>;
     interrupts = <1 15 0xf08>;
};                                   Grant table
                                              memory area
              event notifications IRQ
The hypercall calling
convention
the hypercall interface:
● hvc instruction
● hypervisor specific imm 0xEA1
● hypercall arguments passed in registers
a 64 bit "ready" ABI
● a single hypercall ABI for 32 bit guests and
  64 bit guests


  no compat code in Xen
   ○ 2600 lines of code lighter
ARMv8
● Builds on foundations laid by ARMv7
  ○ xen/arch/arm mostly common code


● Initially 32 bit dom0+domU on 64
  ○ Kernels already ready
  ○ 64-bit guest support in progress


● Running on AEMv8 model
  ○ Foundation Model soon
Code size
sometimes smaller is better
                        Common         ARMv7    ARMv8      Total

  xen/arch/arm              5,122       1,969     821      7,912

       C                    5,023        406      344      5,773

       ASM                       99     1,563     477      2,139

  xen/include/asm-arm       2,315        563      666      3,544


  TOTAL                   7,437       2,532 1,487       11,456

● Entire hypervisor ~200,000LOC
  ○ X86 (64-bit only) ~100,000LOC (~4,000 ASM)
    ■ ~22,000: HVM. ~14,000 MMU
Common Code
  mrc   p15, 0, r0, c0, c0, 5   => WTF?


xen/include/asm-arm/cpregs.h:
  #define __CP32(r, coproc, opc1, crn, crm, opc2) 
        coproc, opc1, r, crn, crm, opc2
  #define CP32(r, name...) __CP32(r, name)

  #define MPIDR         p15,0,c0,c0,5

  mrc CP32(r0, MPIDR)
Challenges
From the emulator to real hardware:
War Stories Challenges
From the emulator to real hardware:
● barriers and flushes
● cache coherency
● GIC and race conditions
● virt_timer documentation bugs
Status of the Project:
ARMv7
● Xen and Dom0 booting on Versatile Express
  Cortex A15 and Arndale

● XL (Xen toolstack) ported to ARM

● PV console, disk and network working

● basic VM lifecycle operations functional

● Xen and Linux ARM patches fully upstream
Status of the Project:
ARMv8
● Xen booting 64 bit
● Dom0 32 bit boots on Xen 64 bit
● 32 bit guest creation and destruction
● Shared code means most features
  developed on ARMv7 Just Work
Roadmap
Xen 4.3
  ○ full ARMv7 support
  ○ ARMv8 64-bit port of the hypervisor

Xen 4.4
  ○   increase HCL
  ○   automated testing
  ○   ARMv8 64-bit virtual machines and tools
  ○   PCI passthrough

Linux 3.10/3.11
  ○ full ARMv8 64-bit Xen guest support
Open Questions
● Boot Protocols
  ○ Multiboot?

● Bootloaders
  ○ U-boot
  ○ UEFI (runtime services?)

● ACPI


● SysMMU
Demo
Xen and Linaro
    Opportunities:

      ○ testing

      ○ platform support

      ○ boot protocols

      ○ hardware
        features
More Information
● Talk to us, we are here all week:
   ○ Xen.org Keynote: Tuesday @ 08:30, Grand Ballroom
   ○ Xen at Demo Friday

● http://www.xen.org

● Xen on ARM @wiki.xen.org: goo.gl/FKNXe

● http://lists.xen.org/mailman/listinfo/xen-devel

More Related Content

What's hot

Porting Xen Paravirtualization to MIPS Architecture
Porting Xen Paravirtualization to MIPS ArchitecturePorting Xen Paravirtualization to MIPS Architecture
Porting Xen Paravirtualization to MIPS ArchitectureThe Linux Foundation
 
Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...
Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...
Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...The Linux Foundation
 
Windsor: Domain 0 Disaggregation for XenServer and XCP
	Windsor: Domain 0 Disaggregation for XenServer and XCP	Windsor: Domain 0 Disaggregation for XenServer and XCP
Windsor: Domain 0 Disaggregation for XenServer and XCPThe Linux Foundation
 
Securing your cloud with Xen's advanced security features
Securing your cloud with Xen's advanced security featuresSecuring your cloud with Xen's advanced security features
Securing your cloud with Xen's advanced security featuresThe Linux Foundation
 
S4 xen hypervisor_20080622
S4 xen hypervisor_20080622S4 xen hypervisor_20080622
S4 xen hypervisor_20080622Todd Deshane
 
Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)
Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)
Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)The Linux Foundation
 
XCP: The Art of Open Virtualization for the Enterprise and the Cloud
XCP: The Art of Open Virtualization for the Enterprise and the CloudXCP: The Art of Open Virtualization for the Enterprise and the Cloud
XCP: The Art of Open Virtualization for the Enterprise and the CloudThe Linux Foundation
 
Bare-Metal Hypervisor as a Platform for Innovation
Bare-Metal Hypervisor as a Platform for InnovationBare-Metal Hypervisor as a Platform for Innovation
Bare-Metal Hypervisor as a Platform for InnovationThe Linux Foundation
 
LinuxCon Japan 13 : 10 years of Xen and Beyond
LinuxCon Japan 13 : 10 years of Xen and BeyondLinuxCon Japan 13 : 10 years of Xen and Beyond
LinuxCon Japan 13 : 10 years of Xen and BeyondThe Linux Foundation
 
Xen Project Update LinuxCon Brazil
Xen Project Update LinuxCon BrazilXen Project Update LinuxCon Brazil
Xen Project Update LinuxCon BrazilThe Linux Foundation
 
ARM Architecture-based System Virtualization: Xen ARM open source software pr...
ARM Architecture-based System Virtualization: Xen ARM open source software pr...ARM Architecture-based System Virtualization: Xen ARM open source software pr...
ARM Architecture-based System Virtualization: Xen ARM open source software pr...The Linux Foundation
 
Rootlinux17: An introduction to Xen Project Virtualisation
Rootlinux17:  An introduction to Xen Project VirtualisationRootlinux17:  An introduction to Xen Project Virtualisation
Rootlinux17: An introduction to Xen Project VirtualisationThe Linux Foundation
 
kexec / kdump implementation in Linux Kernel and Xen hypervisor
kexec / kdump implementation in Linux Kernel and Xen hypervisorkexec / kdump implementation in Linux Kernel and Xen hypervisor
kexec / kdump implementation in Linux Kernel and Xen hypervisorThe Linux Foundation
 

What's hot (20)

Porting Xen Paravirtualization to MIPS Architecture
Porting Xen Paravirtualization to MIPS ArchitecturePorting Xen Paravirtualization to MIPS Architecture
Porting Xen Paravirtualization to MIPS Architecture
 
Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...
Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...
Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Frame...
 
Aplura virtualization slides
Aplura virtualization slidesAplura virtualization slides
Aplura virtualization slides
 
Windsor: Domain 0 Disaggregation for XenServer and XCP
	Windsor: Domain 0 Disaggregation for XenServer and XCP	Windsor: Domain 0 Disaggregation for XenServer and XCP
Windsor: Domain 0 Disaggregation for XenServer and XCP
 
BSDcon Asia 2015: Xen on FreeBSD
BSDcon Asia 2015: Xen on FreeBSDBSDcon Asia 2015: Xen on FreeBSD
BSDcon Asia 2015: Xen on FreeBSD
 
Securing your cloud with Xen's advanced security features
Securing your cloud with Xen's advanced security featuresSecuring your cloud with Xen's advanced security features
Securing your cloud with Xen's advanced security features
 
S4 xen hypervisor_20080622
S4 xen hypervisor_20080622S4 xen hypervisor_20080622
S4 xen hypervisor_20080622
 
Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)
Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)
Xen cloud platform v1.1 (given at Build a Cloud Day in Antwerp)
 
Xen io
Xen ioXen io
Xen io
 
Xen in the Cloud at SCALE 10x
Xen in the Cloud at SCALE 10xXen in the Cloud at SCALE 10x
Xen in the Cloud at SCALE 10x
 
XCP: The Art of Open Virtualization for the Enterprise and the Cloud
XCP: The Art of Open Virtualization for the Enterprise and the CloudXCP: The Art of Open Virtualization for the Enterprise and the Cloud
XCP: The Art of Open Virtualization for the Enterprise and the Cloud
 
Bare-Metal Hypervisor as a Platform for Innovation
Bare-Metal Hypervisor as a Platform for InnovationBare-Metal Hypervisor as a Platform for Innovation
Bare-Metal Hypervisor as a Platform for Innovation
 
LinuxCon Japan 13 : 10 years of Xen and Beyond
LinuxCon Japan 13 : 10 years of Xen and BeyondLinuxCon Japan 13 : 10 years of Xen and Beyond
LinuxCon Japan 13 : 10 years of Xen and Beyond
 
Xen Project Update LinuxCon Brazil
Xen Project Update LinuxCon BrazilXen Project Update LinuxCon Brazil
Xen Project Update LinuxCon Brazil
 
Xen time machine
Xen time machineXen time machine
Xen time machine
 
Xen ATG case study
Xen ATG case studyXen ATG case study
Xen ATG case study
 
ARM Architecture-based System Virtualization: Xen ARM open source software pr...
ARM Architecture-based System Virtualization: Xen ARM open source software pr...ARM Architecture-based System Virtualization: Xen ARM open source software pr...
ARM Architecture-based System Virtualization: Xen ARM open source software pr...
 
Rootlinux17: An introduction to Xen Project Virtualisation
Rootlinux17:  An introduction to Xen Project VirtualisationRootlinux17:  An introduction to Xen Project Virtualisation
Rootlinux17: An introduction to Xen Project Virtualisation
 
Xen Cloud Platform Update
Xen Cloud Platform UpdateXen Cloud Platform Update
Xen Cloud Platform Update
 
kexec / kdump implementation in Linux Kernel and Xen hypervisor
kexec / kdump implementation in Linux Kernel and Xen hypervisorkexec / kdump implementation in Linux Kernel and Xen hypervisor
kexec / kdump implementation in Linux Kernel and Xen hypervisor
 

Viewers also liked

Scale11x : Virtualization with Xen and XCP
Scale11x : Virtualization with Xen and XCP Scale11x : Virtualization with Xen and XCP
Scale11x : Virtualization with Xen and XCP The Linux Foundation
 
XPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARM
XPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARMXPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARM
XPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARMThe Linux Foundation
 
Using hypervisor and container technology to increase datacenter security pos...
Using hypervisor and container technology to increase datacenter security pos...Using hypervisor and container technology to increase datacenter security pos...
Using hypervisor and container technology to increase datacenter security pos...Tim Mackey
 
Developing Automotive Linux
Developing Automotive LinuxDeveloping Automotive Linux
Developing Automotive LinuxAlison Chaiken
 
Lightweight Virtualization with Linux Containers and Docker | YaC 2013
Lightweight Virtualization with Linux Containers and Docker | YaC 2013Lightweight Virtualization with Linux Containers and Docker | YaC 2013
Lightweight Virtualization with Linux Containers and Docker | YaC 2013dotCloud
 
Study on Android Emulator
Study on Android EmulatorStudy on Android Emulator
Study on Android EmulatorSamael Wang
 
Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System
Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System
Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System mentoresd
 
Sierraware ARM hypervisor
Sierraware ARM hypervisor Sierraware ARM hypervisor
Sierraware ARM hypervisor Sierraware
 
The Importance of IVI, GENIVI and Open Source
The Importance of IVI, GENIVI and Open SourceThe Importance of IVI, GENIVI and Open Source
The Importance of IVI, GENIVI and Open Sourcegenivialliance
 
LAS16-507: LXC support in LAVA
LAS16-507: LXC support in LAVALAS16-507: LXC support in LAVA
LAS16-507: LXC support in LAVALinaro
 
Developing the Next Generation Embedded HMIs
Developing the Next Generation Embedded HMIs Developing the Next Generation Embedded HMIs
Developing the Next Generation Embedded HMIs mentoresd
 
LCA13: Xen on ARM
LCA13: Xen on ARMLCA13: Xen on ARM
LCA13: Xen on ARMLinaro
 
QEMU - Binary Translation
QEMU - Binary Translation QEMU - Binary Translation
QEMU - Binary Translation Jiann-Fuh Liaw
 

Viewers also liked (20)

Scale11x : Virtualization with Xen and XCP
Scale11x : Virtualization with Xen and XCP Scale11x : Virtualization with Xen and XCP
Scale11x : Virtualization with Xen and XCP
 
XPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARM
XPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARMXPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARM
XPDS16: Porting Xen on ARM to a new SOC - Julien Grall, ARM
 
Xen.org Overview 2009
Xen.org Overview 2009Xen.org Overview 2009
Xen.org Overview 2009
 
Using hypervisor and container technology to increase datacenter security pos...
Using hypervisor and container technology to increase datacenter security pos...Using hypervisor and container technology to increase datacenter security pos...
Using hypervisor and container technology to increase datacenter security pos...
 
Embedded Virtualization for Mobile Devices
Embedded Virtualization for Mobile DevicesEmbedded Virtualization for Mobile Devices
Embedded Virtualization for Mobile Devices
 
Developing Automotive Linux
Developing Automotive LinuxDeveloping Automotive Linux
Developing Automotive Linux
 
LXC
LXCLXC
LXC
 
Lightweight Virtualization with Linux Containers and Docker | YaC 2013
Lightweight Virtualization with Linux Containers and Docker | YaC 2013Lightweight Virtualization with Linux Containers and Docker | YaC 2013
Lightweight Virtualization with Linux Containers and Docker | YaC 2013
 
Study on Android Emulator
Study on Android EmulatorStudy on Android Emulator
Study on Android Emulator
 
Hypervisor and Nova
Hypervisor and NovaHypervisor and Nova
Hypervisor and Nova
 
Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System
Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System
Simultaneously Leveraging Linux and Android in a GENIVI compliant IVI System
 
Sierraware ARM hypervisor
Sierraware ARM hypervisor Sierraware ARM hypervisor
Sierraware ARM hypervisor
 
Xen Hypervisor
Xen HypervisorXen Hypervisor
Xen Hypervisor
 
The Importance of IVI, GENIVI and Open Source
The Importance of IVI, GENIVI and Open SourceThe Importance of IVI, GENIVI and Open Source
The Importance of IVI, GENIVI and Open Source
 
LAS16-507: LXC support in LAVA
LAS16-507: LXC support in LAVALAS16-507: LXC support in LAVA
LAS16-507: LXC support in LAVA
 
Embedded Hypervisor for ARM
Embedded Hypervisor for ARMEmbedded Hypervisor for ARM
Embedded Hypervisor for ARM
 
Developing the Next Generation Embedded HMIs
Developing the Next Generation Embedded HMIs Developing the Next Generation Embedded HMIs
Developing the Next Generation Embedded HMIs
 
LCA13: Xen on ARM
LCA13: Xen on ARMLCA13: Xen on ARM
LCA13: Xen on ARM
 
QEMU - Binary Translation
QEMU - Binary Translation QEMU - Binary Translation
QEMU - Binary Translation
 
Xvisor: embedded and lightweight hypervisor
Xvisor: embedded and lightweight hypervisorXvisor: embedded and lightweight hypervisor
Xvisor: embedded and lightweight hypervisor
 

Similar to Xen on ARM: A Concise Overview

ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...
ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...
ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...The Linux Foundation
 
Xen and the art of embedded virtualization (ELC 2017)
Xen and the art of embedded virtualization (ELC 2017)Xen and the art of embedded virtualization (ELC 2017)
Xen and the art of embedded virtualization (ELC 2017)Stefano Stabellini
 
Improving Scalability of Xen: The 3,000 Domains Experiment
Improving Scalability of Xen: The 3,000 Domains ExperimentImproving Scalability of Xen: The 3,000 Domains Experiment
Improving Scalability of Xen: The 3,000 Domains ExperimentThe Linux Foundation
 
S4 xen hypervisor_20080622
S4 xen hypervisor_20080622S4 xen hypervisor_20080622
S4 xen hypervisor_20080622Todd Deshane
 
RHEL5 XEN HandOnTraining_v0.4.pdf
RHEL5 XEN HandOnTraining_v0.4.pdfRHEL5 XEN HandOnTraining_v0.4.pdf
RHEL5 XEN HandOnTraining_v0.4.pdfPaul Yang
 
Oscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCP
Oscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCPOscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCP
Oscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCPThe Linux Foundation
 
Xen Euro Par07
Xen Euro Par07Xen Euro Par07
Xen Euro Par07congvc
 
Virtualization with KVM (Kernel-based Virtual Machine)
Virtualization with KVM (Kernel-based Virtual Machine)Virtualization with KVM (Kernel-based Virtual Machine)
Virtualization with KVM (Kernel-based Virtual Machine)Novell
 
XenSummit NA 2012: Xen on ARM Cortex A15
XenSummit NA 2012: Xen on ARM Cortex A15XenSummit NA 2012: Xen on ARM Cortex A15
XenSummit NA 2012: Xen on ARM Cortex A15The Linux Foundation
 
Rmll Virtualization As Is Tool 20090707 V1.0
Rmll Virtualization As Is Tool 20090707 V1.0Rmll Virtualization As Is Tool 20090707 V1.0
Rmll Virtualization As Is Tool 20090707 V1.0guest72e8c1
 
Linux container & docker
Linux container & dockerLinux container & docker
Linux container & dockerejlp12
 
Xen 10th anniversary Status Report (at SELF 2013)
Xen 10th anniversary Status Report (at SELF 2013)Xen 10th anniversary Status Report (at SELF 2013)
Xen 10th anniversary Status Report (at SELF 2013)Russell Pavlicek
 
ELC21: VM-to-VM Communication Mechanisms for Embedded
ELC21: VM-to-VM Communication Mechanisms for EmbeddedELC21: VM-to-VM Communication Mechanisms for Embedded
ELC21: VM-to-VM Communication Mechanisms for EmbeddedStefano Stabellini
 
LCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, Citrix
LCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, CitrixLCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, Citrix
LCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, CitrixThe Linux Foundation
 
CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...
CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...
CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...The Linux Foundation
 

Similar to Xen on ARM: A Concise Overview (20)

ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...
ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...
ALSF13: Xen on ARM - Virtualization for the Automotive Industry - Stefano Sta...
 
Xen and the art of embedded virtualization (ELC 2017)
Xen and the art of embedded virtualization (ELC 2017)Xen and the art of embedded virtualization (ELC 2017)
Xen and the art of embedded virtualization (ELC 2017)
 
Improving Scalability of Xen: The 3,000 Domains Experiment
Improving Scalability of Xen: The 3,000 Domains ExperimentImproving Scalability of Xen: The 3,000 Domains Experiment
Improving Scalability of Xen: The 3,000 Domains Experiment
 
S4 xen hypervisor_20080622
S4 xen hypervisor_20080622S4 xen hypervisor_20080622
S4 xen hypervisor_20080622
 
RHEL5 XEN HandOnTraining_v0.4.pdf
RHEL5 XEN HandOnTraining_v0.4.pdfRHEL5 XEN HandOnTraining_v0.4.pdf
RHEL5 XEN HandOnTraining_v0.4.pdf
 
Oscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCP
Oscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCPOscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCP
Oscon 2012 : From Datacenter to the Cloud - Featuring Xen and XCP
 
OSSNA18: Xen Beginners Training
OSSNA18: Xen Beginners Training OSSNA18: Xen Beginners Training
OSSNA18: Xen Beginners Training
 
LFCOLLAB15: Xen 4.5 and Beyond
LFCOLLAB15: Xen 4.5 and BeyondLFCOLLAB15: Xen 4.5 and Beyond
LFCOLLAB15: Xen 4.5 and Beyond
 
Xen Euro Par07
Xen Euro Par07Xen Euro Par07
Xen Euro Par07
 
Virtualization with KVM (Kernel-based Virtual Machine)
Virtualization with KVM (Kernel-based Virtual Machine)Virtualization with KVM (Kernel-based Virtual Machine)
Virtualization with KVM (Kernel-based Virtual Machine)
 
XenSummit NA 2012: Xen on ARM Cortex A15
XenSummit NA 2012: Xen on ARM Cortex A15XenSummit NA 2012: Xen on ARM Cortex A15
XenSummit NA 2012: Xen on ARM Cortex A15
 
RMLL / LSM 2009
RMLL / LSM 2009RMLL / LSM 2009
RMLL / LSM 2009
 
Rmll Virtualization As Is Tool 20090707 V1.0
Rmll Virtualization As Is Tool 20090707 V1.0Rmll Virtualization As Is Tool 20090707 V1.0
Rmll Virtualization As Is Tool 20090707 V1.0
 
Xen Debugging
Xen DebuggingXen Debugging
Xen Debugging
 
Linux container & docker
Linux container & dockerLinux container & docker
Linux container & docker
 
Xen 10th anniversary Status Report (at SELF 2013)
Xen 10th anniversary Status Report (at SELF 2013)Xen 10th anniversary Status Report (at SELF 2013)
Xen 10th anniversary Status Report (at SELF 2013)
 
ELC21: VM-to-VM Communication Mechanisms for Embedded
ELC21: VM-to-VM Communication Mechanisms for EmbeddedELC21: VM-to-VM Communication Mechanisms for Embedded
ELC21: VM-to-VM Communication Mechanisms for Embedded
 
LCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, Citrix
LCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, CitrixLCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, Citrix
LCC17 - Securing Embedded Systems with the Hypervisor - Lars Kurth, Citrix
 
CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...
CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...
CIF16/Scale14x: The latest from the Xen Project (Lars Kurth, Chairman of Xen ...
 
LFCollab14: Xen vs Xen Automotive
LFCollab14: Xen vs Xen AutomotiveLFCollab14: Xen vs Xen Automotive
LFCollab14: Xen vs Xen Automotive
 

More from The Linux Foundation

ELC2019: Static Partitioning Made Simple
ELC2019: Static Partitioning Made SimpleELC2019: Static Partitioning Made Simple
ELC2019: Static Partitioning Made SimpleThe Linux Foundation
 
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...The Linux Foundation
 
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...The Linux Foundation
 
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...The Linux Foundation
 
XPDDS19 Keynote: Unikraft Weather Report
XPDDS19 Keynote:  Unikraft Weather ReportXPDDS19 Keynote:  Unikraft Weather Report
XPDDS19 Keynote: Unikraft Weather ReportThe Linux Foundation
 
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...The Linux Foundation
 
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, XilinxXPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, XilinxThe Linux Foundation
 
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...The Linux Foundation
 
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
XPDDS19: Memories of a VM Funk - Mihai Donțu, BitdefenderXPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
XPDDS19: Memories of a VM Funk - Mihai Donțu, BitdefenderThe Linux Foundation
 
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19:  The Road to Safety Certification: Overcoming Community Challeng...OSSJP/ALS19:  The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...The Linux Foundation
 
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
 OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making... OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...The Linux Foundation
 
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, CitrixXPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, CitrixThe Linux Foundation
 
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltdXPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltdThe Linux Foundation
 
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...The Linux Foundation
 
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&DXPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&DThe Linux Foundation
 
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM SystemsXPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM SystemsThe Linux Foundation
 
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...The Linux Foundation
 
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...The Linux Foundation
 
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...The Linux Foundation
 
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSEXPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSEThe Linux Foundation
 

More from The Linux Foundation (20)

ELC2019: Static Partitioning Made Simple
ELC2019: Static Partitioning Made SimpleELC2019: Static Partitioning Made Simple
ELC2019: Static Partitioning Made Simple
 
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
 
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
 
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
 
XPDDS19 Keynote: Unikraft Weather Report
XPDDS19 Keynote:  Unikraft Weather ReportXPDDS19 Keynote:  Unikraft Weather Report
XPDDS19 Keynote: Unikraft Weather Report
 
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
 
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, XilinxXPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
 
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
 
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
XPDDS19: Memories of a VM Funk - Mihai Donțu, BitdefenderXPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
 
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19:  The Road to Safety Certification: Overcoming Community Challeng...OSSJP/ALS19:  The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
 
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
 OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making... OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
 
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, CitrixXPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
 
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltdXPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
 
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
 
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&DXPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
 
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM SystemsXPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
 
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
 
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
 
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
 
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSEXPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
 

Recently uploaded

DSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine TuningDSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine TuningLars Bell
 
Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...Rick Flair
 
Training state-of-the-art general text embedding
Training state-of-the-art general text embeddingTraining state-of-the-art general text embedding
Training state-of-the-art general text embeddingZilliz
 
Take control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test SuiteTake control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test SuiteDianaGray10
 
The Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and ConsThe Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and ConsPixlogix Infotech
 
How to write a Business Continuity Plan
How to write a Business Continuity PlanHow to write a Business Continuity Plan
How to write a Business Continuity PlanDatabarracks
 
Developer Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQLDeveloper Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQLScyllaDB
 
A Journey Into the Emotions of Software Developers
A Journey Into the Emotions of Software DevelopersA Journey Into the Emotions of Software Developers
A Journey Into the Emotions of Software DevelopersNicole Novielli
 
Generative AI for Technical Writer or Information Developers
Generative AI for Technical Writer or Information DevelopersGenerative AI for Technical Writer or Information Developers
Generative AI for Technical Writer or Information DevelopersRaghuram Pandurangan
 
The Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptx
The Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptxThe Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptx
The Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptxLoriGlavin3
 
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024BookNet Canada
 
The State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptxThe State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptxLoriGlavin3
 
Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!Commit University
 
SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024Lorenzo Miniero
 
DevEX - reference for building teams, processes, and platforms
DevEX - reference for building teams, processes, and platformsDevEX - reference for building teams, processes, and platforms
DevEX - reference for building teams, processes, and platformsSergiu Bodiu
 
Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 365Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 3652toLead Limited
 
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024BookNet Canada
 
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptxPasskey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptxLoriGlavin3
 
TrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data PrivacyTrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data PrivacyTrustArc
 
How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.Curtis Poe
 

Recently uploaded (20)

DSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine TuningDSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine Tuning
 
Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...
 
Training state-of-the-art general text embedding
Training state-of-the-art general text embeddingTraining state-of-the-art general text embedding
Training state-of-the-art general text embedding
 
Take control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test SuiteTake control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test Suite
 
The Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and ConsThe Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and Cons
 
How to write a Business Continuity Plan
How to write a Business Continuity PlanHow to write a Business Continuity Plan
How to write a Business Continuity Plan
 
Developer Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQLDeveloper Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQL
 
A Journey Into the Emotions of Software Developers
A Journey Into the Emotions of Software DevelopersA Journey Into the Emotions of Software Developers
A Journey Into the Emotions of Software Developers
 
Generative AI for Technical Writer or Information Developers
Generative AI for Technical Writer or Information DevelopersGenerative AI for Technical Writer or Information Developers
Generative AI for Technical Writer or Information Developers
 
The Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptx
The Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptxThe Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptx
The Fit for Passkeys for Employee and Consumer Sign-ins: FIDO Paris Seminar.pptx
 
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: Loan Stars - Tech Forum 2024
 
The State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptxThe State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptx
 
Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!
 
SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024
 
DevEX - reference for building teams, processes, and platforms
DevEX - reference for building teams, processes, and platformsDevEX - reference for building teams, processes, and platforms
DevEX - reference for building teams, processes, and platforms
 
Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 365Ensuring Technical Readiness For Copilot in Microsoft 365
Ensuring Technical Readiness For Copilot in Microsoft 365
 
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
 
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptxPasskey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptx
 
TrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data PrivacyTrustArc Webinar - How to Build Consumer Trust Through Data Privacy
TrustArc Webinar - How to Build Consumer Trust Through Data Privacy
 
How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.How AI, OpenAI, and ChatGPT impact business and software.
How AI, OpenAI, and ChatGPT impact business and software.
 

Xen on ARM: A Concise Overview

  • 1. Xen on ARM Stefano Stabellini and Ian Campbell
  • 3. Xen: the gears of the cloud ● large user base more than 10 million individuals users ● power the largest clouds in production ● not just for servers
  • 4. Xen: Open Source GPLv2 with DCO (like Linux) Diverse contributor community
  • 5. Xen: Open Source source: Mike Day http://code.ncultra.org
  • 6. Xen Architecture Dom0 DomU DomU DomU PV backends PV Frontends PV Frontends PV Frontends HW drivers Xen Hardware
  • 7. PV Protocols Request Producer Backend Frontend Request Consumer Response Consumer Response Producer
  • 8. Xen Architecture: driver domains Disk Driver Network Dom0 DomU Domain Driver Domain BlockBack NetBack BlockFront Toolstack Disk Driver Network Driver NetFront Xen Hardware
  • 9. Xen: advantages ● small surface of attack ● isolation ● resilience ● specialized algorithms (scheduler)
  • 10. Xen Architecture: HVM guests Dom0 HVM DomU stubdom HVM DomU IO emulation IO emulation QEMU PV backends PV Frontends HW drivers Xen Hardware
  • 11. Xen upstream status ● Xen (Dom0 and DomU support, PV frontends and backends) fully upstream in Linux since v3.0 A single 3.0.0 Linux kernel image boots on native, on Xen as domU, as dom0 and PV on HVM guest ● Xen upstream in QEMU since v1.3 ● Xen supported by SuSE, Debian, Ubuntu, Fedora, CentOS, NetBSD and more
  • 12. ARM Servers coming to market 4GB RAM, 4 cores per node 3 x 6 x 4 x 4 = 288 cores single node virtualization - manageability -
  • 13. Design goals ● exploit the hardware as much as possible ● one type of guest ○ no PVOPs ○ use PV interfaces for IO ● Rearchitected for the modern age: ○ no QEMU ○ no compat code ○ no shadow pagetables
  • 14. Xen on ARM architecture
  • 15. Xen on ARM architecture
  • 16. Exploit the hardware Exploit the hardware virtualization extensions support as much as possible: ● hypervisor mode ● MMU: second stage translation ○ no PV MMU calls: no need for PVOPs ○ no shadow pagetables: -10721 lines of code!! ● hypercall: HVC ● generic timers
  • 17. General Interrupt Controller an interrupt controller with virtualization support ● use the GIC to inject hardware interrupts into dom0 ● use the GIC to inject event notifications into any guest domains with Xen support ○ use PPI 31 ○ advertise the IRQ via Device Tree
  • 18. One type of guest to rule them all
  • 19. One type of guest Like PV guests do it: ● support booting from a supplied kernel ● no emulated devices ● use PV interfaces for IO no need for QEMU
  • 20. One type of guest Like HVM guests do it: ● no PV MMU calls: exploit HW nested paging ● same entry point on native and on Xen ● use Device Tree to discover Xen presence ● no unnecessary devices in the Device Tree ● simple device emulation can be done in Xen no need for QEMU
  • 21. Device Tree Use Device Tree to describe the virtual platform hypervisor { compatible = "xen,xen", "xen,xen-4.2"; reg = <0xb0000000 0x20000>; interrupts = <1 15 0xf08>; };
  • 22. Device Tree Use Device Tree to describe the virtual platform version of the Xen ABI hypervisor { compatible = "xen,xen", "xen,xen-4.2"; reg = <0xb0000000 0x20000>; interrupts = <1 15 0xf08>; }; Grant table memory area event notifications IRQ
  • 23. The hypercall calling convention the hypercall interface: ● hvc instruction ● hypervisor specific imm 0xEA1 ● hypercall arguments passed in registers
  • 24. a 64 bit "ready" ABI ● a single hypercall ABI for 32 bit guests and 64 bit guests no compat code in Xen ○ 2600 lines of code lighter
  • 25. ARMv8 ● Builds on foundations laid by ARMv7 ○ xen/arch/arm mostly common code ● Initially 32 bit dom0+domU on 64 ○ Kernels already ready ○ 64-bit guest support in progress ● Running on AEMv8 model ○ Foundation Model soon
  • 26. Code size sometimes smaller is better Common ARMv7 ARMv8 Total xen/arch/arm 5,122 1,969 821 7,912 C 5,023 406 344 5,773 ASM 99 1,563 477 2,139 xen/include/asm-arm 2,315 563 666 3,544 TOTAL 7,437 2,532 1,487 11,456 ● Entire hypervisor ~200,000LOC ○ X86 (64-bit only) ~100,000LOC (~4,000 ASM) ■ ~22,000: HVM. ~14,000 MMU
  • 27. Common Code mrc p15, 0, r0, c0, c0, 5 => WTF? xen/include/asm-arm/cpregs.h: #define __CP32(r, coproc, opc1, crn, crm, opc2) coproc, opc1, r, crn, crm, opc2 #define CP32(r, name...) __CP32(r, name) #define MPIDR p15,0,c0,c0,5 mrc CP32(r0, MPIDR)
  • 28. Challenges From the emulator to real hardware:
  • 29. War Stories Challenges From the emulator to real hardware: ● barriers and flushes ● cache coherency ● GIC and race conditions ● virt_timer documentation bugs
  • 30. Status of the Project: ARMv7 ● Xen and Dom0 booting on Versatile Express Cortex A15 and Arndale ● XL (Xen toolstack) ported to ARM ● PV console, disk and network working ● basic VM lifecycle operations functional ● Xen and Linux ARM patches fully upstream
  • 31. Status of the Project: ARMv8 ● Xen booting 64 bit ● Dom0 32 bit boots on Xen 64 bit ● 32 bit guest creation and destruction ● Shared code means most features developed on ARMv7 Just Work
  • 32. Roadmap Xen 4.3 ○ full ARMv7 support ○ ARMv8 64-bit port of the hypervisor Xen 4.4 ○ increase HCL ○ automated testing ○ ARMv8 64-bit virtual machines and tools ○ PCI passthrough Linux 3.10/3.11 ○ full ARMv8 64-bit Xen guest support
  • 33. Open Questions ● Boot Protocols ○ Multiboot? ● Bootloaders ○ U-boot ○ UEFI (runtime services?) ● ACPI ● SysMMU
  • 34. Demo
  • 35. Xen and Linaro Opportunities: ○ testing ○ platform support ○ boot protocols ○ hardware features
  • 36. More Information ● Talk to us, we are here all week: ○ Xen.org Keynote: Tuesday @ 08:30, Grand Ballroom ○ Xen at Demo Friday ● http://www.xen.org ● Xen on ARM @wiki.xen.org: goo.gl/FKNXe ● http://lists.xen.org/mailman/listinfo/xen-devel