LCA14: LCA14-101: ARM VM Standards

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Resource: LCA14 Name: LCA14-101: ARM VM Standards Date: 03-03-2014 Speaker: Christoffer Dall Video: https://www.youtube.com/watch?v=Qh3SX3p3B74

Mon-3-Mar, 10:05am, Christoffer Dall
LCA14-101: ARM VM Standards

• Discussion at LCU13
• Trying to answer main question:
How do distribution vendors package and ship ARM
VMs so that they can be expected to run on the
ARM hypervisors out there?
Background

• RFC sent to:
• cross-distro@lists.linaro.org
• kvmarm@lists.cs.columbia.edu
• kvm@vger.kernel.org
• linux-arm-kernel@lists.infradead.org
• xen-devel@lists.xen.org
Proposed ARM VM Image Spec

• Build single image, run everywhere
• Valid recommendations for both aarch32 and aarch64
• The SBSA doesn’t cover it
• Mandated EL2
• Mandates pl011
• aarch32 not supported
Goal

• Must be well-defined
• Must be GPT with EFI application in EFI System
Partition (ESP)
• Must use removable path (no preexisting UEFI config)
• Supports both KVM and Xen
• Example: Grub2 as EFI application loads Linux
Image Format

• Required: Must be able to boot EFI application in ESP
• Obvious recommendation is UEFI implementation
• Linaro is already working on this
• Recommended to support persistent environment
storage:
• Supports adding disks later
• Supports running installers later
• Firmware distributed as part of distribution, not with VM
image
Virtual Firmware

• The Linux kernel boot protocol requires an FDT
• Even when using ACPI and UEFI
• FDT -> UEFI System Table -> ACPI root pointer
• Therefore:
• ACPI is discoverable through FDT, or
• the FDT describes the system directly
Hardware Description

• Must support at least one of:
• (1) aarch32 on aarch32
• (2) aarch32 on aarch64
• (3) aarch64 on aarch64
• Mandatory peripherals:
• Serial console (pl011, virtio-console, or Xen PV console)
• GICv2 or newer
• Architected Timer
• Hotpluggable bus (virtual PCIe or Xen PV bus)
VM Platform

• Must support GICv2 and newer. Maintaining backwards
compatibility.
• Strongly recommended to support all of:
• block, network, console, balloon drivers, e.g.
• virtio-pci
• virtio-mmio
• Xen PV drivers
• Will leverage mach-virt kernel facilities, but these are loosely coupled concepts.
Guest OS Recommendations

• Mandate serial port (reduced pl011)
• Use cases for ACPI (device assignment, verification,
unification)
• Fixed memory map (UEFI)
• Issue concerning kernel comand line (console=?)
Open Questions

• RFC: http://lists.linaro.org/pipermail/cross-distro/2014-February/000589.html
• Questions?
Resources and Questions

More about Linaro Connect: http://connect.linaro.org
More about Linaro: http://www.linaro.org/about/
More about Linaro engineering: http://www.linaro.org/engineering/
Linaro members: www.linaro.org/members

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HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline

Session ID: HKG18-100K1 Session Name: HKG18-100K1 - George Grey: Opening Keynote Speaker: George Grey Track: Keynote ★ Session Summary ★ --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-100k1/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-100k1.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-100k1.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Keynote 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961

HKG18-100K1 - George Grey: Opening Keynote

HKG18-100K1 - George Grey: Opening Keynote

HKG18-100K1 - George Grey: Opening Keynote

"Session ID: HKG18-318 Session Name: HKG18-318 - OpenAMP Workshop Speaker: Wendy Liang Track: Ecosystem Day ★ Session Summary ★ --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-318/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-318.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-318.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Ecosystem Day 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-318 - OpenAMP Workshop

HKG18-318 - OpenAMP Workshop

HKG18-318 - OpenAMP Workshop

"Session ID: HKG18-501 Session Name: HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline Speaker: Chris Redpath Track: Mobile, Kernel ★ Session Summary ★ This session will introduce the changes to EAS planned for 4.14 kernel, and how Arm hopes that EAS will develop in future. EAS has already evolved from an Arm/Linaro joint project to involving a much wider community of SoC vendors, Google and interested device manufacturers. We will highlight the product-specific pieces remaining in the Android Common Kernel EAS implementation, and our plans to provide an upstreaming plan for each product feature. In particular, the new 'simplified energy model' is designed to provide mainline-friendliness and comparable performance using a simple DT expression of cpu power/performance. --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-501/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-501.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-501.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Mobile, Kernel 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline

HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline

HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline

"Session ID: HKG18-315 Session Name: HKG18-315 - Why the ecosystem is a wonderful thing warts and all Speaker: Andrew Wafaa Track: Ecosystem Day ★ Session Summary ★ The Arm ecosystem is a vibrant place, but it's not always smooth sailing. This presentation will go through the highs and lows of getting the ecosystem fully Arm enabled. --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-315/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-315.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-315.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Ecosystem Day 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-315 - Why the ecosystem is a wonderful thing, warts and all

HKG18-315 - Why the ecosystem is a wonderful thing, warts and all

HKG18-315 - Why the ecosystem is a wonderful thing, warts and all

"Session ID: HKG18-115 Session Name: HKG18-115 - Partitioning ARM Systems with the Jailhouse Hypervisor Speaker: Jan Kiszka Track: Security ★ Session Summary ★ The open source hypervisor Jailhouse provides hard partitioning of multicore systems to co-locate multiple Linux or RTOS instances side by side. It aims at low complexity and minimal footprint to achieve deterministic behavior and enable certifications according to safety or security standards. In this session, we would like to look at the ARM-specific status of Jailhouse and discuss applications, to-dos and possible collaborations around it with the ARM community. The session is intended to be half presentation, half Q&A / discussion. --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-115/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-115.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-115.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Security 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18- 115 - Partitioning ARM Systems with the Jailhouse Hypervisor

HKG18- 115 - Partitioning ARM Systems with the Jailhouse Hypervisor

HKG18- 115 - Partitioning ARM Systems with the Jailhouse Hypervisor

"Session ID: HKG18-TR08 Session Name: HKG18-TR08 - Upstreaming SVE in QEMU Speaker: Alex Bennée,Richard Henderson Track: Enterprise ★ Session Summary ★ ARM's Scalable Vector Extensions is an innovative solution to processing highly data parallel workloads. While several out-of-tree attempts at implementing SVE support for QEMU existed, we took a fundamentally different approach to solving key challenges and therefore pursued a from-scratch QEMU SVE implementation in Linaro. Our strategic choice was driven by several factors. First as an ""upstream first"" organisation we were focused on a solution that would be readily accepted by the upstream project. This entailed doing our development in the open on the project mailing lists where early feedback and community consensus can be reached. --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-tr08/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-tr08.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-tr08.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Enterprise 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-TR08 - Upstreaming SVE in QEMU

HKG18-TR08 - Upstreaming SVE in QEMU

HKG18-TR08 - Upstreaming SVE in QEMU

"Session ID: HKG18-113 Session Name: HKG18-113 - Secure Data Path work with i.MX8M Speaker: Cyrille Fleury Track: Digital Home ★ Session Summary ★ NXP presentation on Secure Data Path work with i.MX8M Soc. Demonstrate 4K PlayReady playback with Android 8.1 running on i.MX8M. Focus on security (MS SL3000 and Widevine level 1) --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-113/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-113.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-113.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Digital Home 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-113- Secure Data Path work with i.MX8M

HKG18-113- Secure Data Path work with i.MX8M

HKG18-113- Secure Data Path work with i.MX8M

"Session ID: HKG18-120 Session Name: HKG18-120 - Structured Documentation and Validation for Device Tree Speaker: Grant Likely Track: Kernel ★ Session Summary ★ Devicetree has become the dominant hardware configuration language used when building embedded systems. Projects using Devicetree now include Linux, U-Boot, Android, FreeBSD, and Zephyr. However, it is notoriously difficult to write correct Devicetree data files. The dtc tools perform limited tests for valid data, and there there is not yet a way to add validity test for specific hardware descriptions. Neither is there a good way to document requirements for specific bindings. Work is underway to solve these problems. This session will present a proposal for adding Devicetree schema files to the Devicetree toolchain that can be used to both validate data and produce usable documentation. --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-120/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-120.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-120.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: Kernel 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-120 - Devicetree Schema Documentation and Validation

HKG18-120 - Devicetree Schema Documentation and Validation

HKG18-120 - Devicetree Schema Documentation and Validation

"Session ID: HKG18-223 Session Name: HKG18-223 - Trusted Firmware M : Trusted Boot Speaker: Tamas Ban Track: LITE ★ Session Summary ★ An overview of the trusted boot concept and firmware update on the ARMv8-M based platform and how MCUBoot acts as a BL2 bootloader for TF-M. Trusted Firmware M In October 2017, Arm announced the vision of Platform Security Architecture (PSA) - a common framework to allow everyone in the IoT ecosystem to move forward with stronger, scalable security and greater confidence. There are three key stages to the Platform Security Architecture: Analysis, Architecture and Implementation which are described at https://developer.arm.com/products/architecture/platform-security-architecture. _Trusted Firmware M, i.e. TF-M, is the Arm project to provide an open source reference implementation firmware that will conform to the PSA specification for M-Class devices. Early access to TF-M was released in December 2017 and it is being made public during Linaro Connect. The implementation should be considered a prototype until the PSA specifications reach release state and the code aligns._ --------------------------------------------------- ★ Resources ★ Event Page: http://connect.linaro.org/resource/hkg18/hkg18-223/ Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-223.pdf Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-223.mp4 --------------------------------------------------- ★ Event Details ★ Linaro Connect Hong Kong 2018 (HKG18) 19-23 March 2018 Regal Airport Hotel Hong Kong --------------------------------------------------- Keyword: LITE 'http://www.linaro.org' 'http://connect.linaro.org' --------------------------------------------------- Follow us on Social Media https://www.facebook.com/LinaroOrg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961"

HKG18-223 - Trusted FirmwareM: Trusted boot

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1. Mon-3-Mar, 10:05am, Christoffer Dall LCA14-101: ARM VM Standards

2. • Discussion at LCU13 • Trying to answer main question: How do distribution vendors package and ship ARM VMs so that they can be expected to run on the ARM hypervisors out there? Background

3. • RFC sent to: • cross-distro@lists.linaro.org • kvmarm@lists.cs.columbia.edu • kvm@vger.kernel.org • linux-arm-kernel@lists.infradead.org • xen-devel@lists.xen.org Proposed ARM VM Image Spec

4. • Build single image, run everywhere • Valid recommendations for both aarch32 and aarch64 • The SBSA doesn’t cover it • Mandated EL2 • Mandates pl011 • aarch32 not supported Goal

5. • Must be well-defined • Must be GPT with EFI application in EFI System Partition (ESP) • Must use removable path (no preexisting UEFI config) • Supports both KVM and Xen • Example: Grub2 as EFI application loads Linux Image Format

6. • Required: Must be able to boot EFI application in ESP • Obvious recommendation is UEFI implementation • Linaro is already working on this • Recommended to support persistent environment storage: • Supports adding disks later • Supports running installers later • Firmware distributed as part of distribution, not with VM image Virtual Firmware

7. • The Linux kernel boot protocol requires an FDT • Even when using ACPI and UEFI • FDT -> UEFI System Table -> ACPI root pointer • Therefore: • ACPI is discoverable through FDT, or • the FDT describes the system directly Hardware Description

8. • Must support at least one of: • (1) aarch32 on aarch32 • (2) aarch32 on aarch64 • (3) aarch64 on aarch64 • Mandatory peripherals: • Serial console (pl011, virtio-console, or Xen PV console) • GICv2 or newer • Architected Timer • Hotpluggable bus (virtual PCIe or Xen PV bus) VM Platform

9. • Must support GICv2 and newer. Maintaining backwards compatibility. • Strongly recommended to support all of: • block, network, console, balloon drivers, e.g. • virtio-pci • virtio-mmio • Xen PV drivers • Will leverage mach-virt kernel facilities, but these are loosely coupled concepts. Guest OS Recommendations

10. • Mandate serial port (reduced pl011) • Use cases for ACPI (device assignment, verification, unification) • Fixed memory map (UEFI) • Issue concerning kernel comand line (console=?) Open Questions

11. • RFC: http://lists.linaro.org/pipermail/cross-distro/2014-February/000589.html • Questions? Resources and Questions

12. More about Linaro Connect: http://connect.linaro.org More about Linaro: http://www.linaro.org/about/ More about Linaro engineering: http://www.linaro.org/engineering/ Linaro members: www.linaro.org/members