Open Source Summit Europe 2024

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Open Source Summit Europe 2024

September 16-18, 2024
Vienna, Austria
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Note: The schedule is subject to change.

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IMPORTANT NOTE: Timing of sessions and room locations are subject to change.

11:20 CEST

Introduction to Linux Kernel Debugging and Code Coverage Using KCOV - Priya Dixit, Samsung Semiconductor Research India

Monday September 16, 2024 11:20 - 12:00 CEST

Room 0.49 - 0.50 (Level 0)

When we write kernel code, testing it thoroughly by giving different input combinations to check all the vulnerabilities and code coverage is important. Also, running buggy code directly on the hardware board has the potential to break the device. The presentation covers building and running a KCOV-enabled kernel in a virtualized environment for runtime detection of error conditions and checking code coverage using the same. To develop a deeper understanding, we will inject faults from user space via debugfs and catch the same by fuzzing the Linux kernel. Further debugging will be shown by using the GCC utilities like addr2line, objdump, etc.

Speakers

Priya Dixit

Staff Engineer, Samsung Semiconductor Research India

I am a Linux-embedded engineer with around nine years of experience in the domain. I have worked on various projects involving interrupt subsystem, coresight, kernel tracing, and testing infrastructure. I am passionate about learning new technologies and sharing my knowledge with... Read More →

Monday September 16, 2024 11:20 - 12:00 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Any

12:15 CEST

Getting Linux Distros to New Architectures - Bernhard Rosenkränzer, Baylibre

Monday September 16, 2024 12:15 - 12:55 CEST

Room 0.49 - 0.50 (Level 0)

Once in a while, new processor architectures show up -- aarch64, RISC-V, Loongarch, Elbrus -- and more to come. Getting Linux distributions - especially those using binary packages - up on them has traditionally been difficult, but it doesn't have to be. For the new OpenMandriva RISC-V port, we have automated the process in a way that will also work for other new architectures (or even other core changes like spins using a different libc). This talk introduces the pitfalls and the Open Source tools we've used to overcome them.

Speakers

Bernhard

Linux/Open Source consultant, Baylibre

Bernhard "bero" Rosenkränzer has been a Linux developer ever since he became curious about a stack of 84 floppy disks in the first half of the 1990s. Some of his code can be found in anything from the Linux kernel to the KDE Plasma user interface. Before joining BayLibre, he has... Read More →

Monday September 16, 2024 12:15 - 12:55 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Any

15:25 CEST

DAMON Recipes: Ways to Save Memory Using a Linux Kernel Subsystem in the Real World - SeongJae Park, Amazon

Monday September 16, 2024 15:25 - 16:05 CEST

Room 0.49 - 0.50 (Level 0)

DAMON is a Linux kernel subsystem for efficient data access monitoring that has been integrated into the mainline since v5.15. The subsystem has been further developed into an access-aware system operating engine. In addition, userspace tools for DAMON have been developed to provide a human-friendly interface and additional userspace capabilities. Several major Linux distributions now offer DAMON-enabled kernels and user-space tool packages. Of course, not all use cases for DAMON are known, but the DAMON maintainer has been privileged to hear about some interesting and creative uses of DAMON from several people who primarily use DAMON for memory efficiency in their prototypes, researches, and products. In this talk, we'll give a brief introduction to the practical benefits and unique internal mechanisms that DAMON provides, with live demos of key features. We'll then detail real-world examples of DAMON use in prototypes, researches, and products. Finally, we'll show you how you can join the project community for participating to the development or get help. The rest of the talk will be followed by a Q&A.

Speakers

SeongJae Park

Kernel Development Engineer, Amazon

SeongJae Park is a Linux kernel programmer who maintains the data access monitoring framework of the Linux kernel called DAMON (https://damonitor.github.io/). His interests include operating system kernels, parallel computing, and memory management.

Monday September 16, 2024 15:25 - 16:05 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Any

16:20 CEST

New Challenges Towards Spatial Safety in the Linux Kernel - Gustavo A. R. Silva, The Linux Foundation

Monday September 16, 2024 16:20 - 17:00 CEST

Room 0.49 - 0.50 (Level 0)

The first flexible-array transformation we implemented in the kernel, as part of the Kernel Self-Protection Project, took place back in March 2019. At the time, our work on preventing integer overflows during memory allocations led us to discover an 8-year-old bug. Addressing this bug not only resolved a longstanding issue but also initiated the work of flexible-array transformations across the whole kernel tree. This marked the beginning of a challenging yet rewarding journey to add bounds-checking on trailing arrays in the Linux kernel. Five years have passed since then, and we've come a long way. We have now new Clang and GCC hardening compiler options and attributes, that significantly improve the security of the Linux kernel, particularly in the spatial-safety area. We have new hardening helpers that make traditional methods less prone to error. In general, we have new and safer ways of doing things, which usually require a learning curve, even for seasoned kernel developers. In this talk, we will walk through the most recent challenges and history of our quest to improve spatial safety in the Linux kernel, and with that, get rid of out-of-bounds bugs once and for all.

Speakers

Gustavo A. R. Silva

Upstream Linux Kernel Engineer, The Linux Foundation

Gustavo A. R. Silva works full-time as an Upstream Linux Kernel Engineer, focused on security. Over the past several years, he’s been hunting and fixing all sorts of bugs and issues in the Linux kernel. He actively collaborates with the Kernel Self-Protection Project, and his work... Read More →

Monday September 16, 2024 16:20 - 17:00 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Advanced

11:00 CEST

How to Generate Test-Cases and Data Mocks for Microservices at Kernel Using eBPF - Neha Gupta & Animesh Pathak, Keploy

Tuesday September 17, 2024 11:00 - 11:40 CEST

Room 1.61 & Room 1.62 (Level 1)

In this session, we're going to talk about how we can easily record the API calls of any user-level application at Kernel using an EBPF program and convert those to realistic test cases and data mocks/stubs without writing any scripts. How we can set our testing pipelines on auto-pilot? We'll be discussing how to utilise UProbes and KProbes for the same. We'll also talk about how we can integrate this pipeline in popular language native testing libraries like JUnit, Jest, and Go-Test and easily achieve high test coverage on functional test suites. Since testing is very use-case specific, developers often avoid spending effort in writing test cases. Manual effort is being spent by QA to test apps and the industry standard for test automation is 24%. On average 50% of engineering efforts are spent to write and maintain the test scripts. Creating dummy test data is also very time-consuming and still, it is unrealistic test -data, leaving bugs leaking to production. The new-gen AI LLM-based test generation tools like ChatGPT are not fire-and-forget, since it requires effort to understand and correct the scripts generated by those tools and the dummy data is again unrealistic.

Speakers

Animesh Pathak

Founding Devrel, Keploy

He is an avid tech community enthusiast. Having worked with various technologies such as NodeJS, Microsoft Azure, etc., he has spent the last 4 years empowering tech communities and is currently active as a Gold MLSA, Postman Student Leader and Twilio Field Operator. He has been an... Read More →

Neha Gupta

Co-Founder, Keploy

Co-Founder, Keploy.io. She brings prior experience of working as an engineer as well product manager at Indian startups like Lenskart, and Fareye. She has been an open-source contributor and mentor for projects like XWiki, and JenkinsX via programs like GSoC, and Outreachy. She has... Read More →

Tuesday September 17, 2024 11:00 - 11:40 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

11:00 CEST

Rusty Swapping: Rewriting a Zswap Backend in Rust - Vitaly Wool, Konsulko AB

Tuesday September 17, 2024 11:00 - 11:40 CEST

Room 0.49 - 0.50 (Level 0)

Despite all controversies, Rust in recent times has gained popularity as the second Linux kernel high-level language. There’s been discussions about its applicability in various kernel subsystems which yielded tentative conclusions. People have been advised by kernel gurus to use Rust for subsystem implementations rather than for drivers, and the author totally shares that stance. With that said, the author had a zswap backend called zblock ready for but still not accepted into the mainline, so the idea came naturally: to rewrite it in Rust and compare performance and complexity of the two implementations. Whichever wins gets submitted. This talk will cover the main principles of zblock (which stay the same no matter the language used), the obstacles the author met while implementing it in Rust, and finally the comparison of the two. It will be fun.

Speakers

Vitaly Wool

Principal Engineer, Konsulko AB

Vitaly has more than 20 years of experience in embedded software development. Starting in real-time and critical systems, he moved to Embedded Linux in 2003, making numerous contributions to MTD device drivers and flash file systems. Then he moved to Sweden where he began working... Read More →

Tuesday September 17, 2024 11:00 - 11:40 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Intermediate

11:55 CEST

Linux Sandboxing with Landlock - Mickaël Salaün, Microsoft

Tuesday September 17, 2024 11:55 - 12:35 CEST

Room 0.49 - 0.50 (Level 0)

Landlock's goal is to make it possible for Linux applications to sandbox themselves. On Linux, many traditional access control mechanisms are only available to the system administrator, which do not follow the principle of least privilege. As a result, sandboxing policies were created independently of an actual program execution, leading to unnecessarily broad policies. With Landlock, unprivileged processes can safely create sandboxing policies well-tailored to the expected needs of a running application. Landlock also solves the organizational aspect of keeping policy and software in sync with each other, by putting the policy definition and maintenance in the developer's hands. In this talk, we explain how Landlock works and how it can be used to protect Linux users, without being noticed, except by attackers.

Speakers

Mickaël Salaün

Senior Software Engineer, Microsoft

Mickaël Salaün is a kernel developer and open source enthusiast. He is mainly interested in Linux-based operating systems, especially from a security point of view. He has built security sandboxes before hacking into the kernel on a new LSM called Landlock, of which he is now the... Read More →

Tuesday September 17, 2024 11:55 - 12:35 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Intermediate

11:55 CEST

Optimized String Processing in RISC-V: How Toolchain Improvements Can Boost Performance - Christoph Müllner, VRULL GmbH

Tuesday September 17, 2024 11:55 - 12:35 CEST

Room 1.61 & Room 1.62 (Level 1)

The C runtime offers a range of string processing routines, such as strcmp() and strlen(). The throughput of these routines has a significant impact on many applications and benchmarks, so they are one of the many optimization targets of toolchain developers. Unfortunately, these functions have certain properties and corner cases that limit the optimization opportunities. This talk makes a journey through common optimization techniques ranging from utilization of alignment information in the compiler. It ends with specific instructions that speed up string processing (RISC-V’s orc.b instruction). Further, the talk will show how these optimizations can boost the throughput on real HW by orders of magnitudes in synthetic benchmarks and the impact on the SPEC CPU 2017 benchmark suite. The presentation will include assembly listings, so basic assembly knowledge will help follow the talk.

Speakers

Christoph Müllner

-, VRULL GmbH

Christoph Müllner is the chair of RVI’s Toolchains SIG and maintains the riscv-gnu-toolchain repository, a helpful resource for beginners and experienced toolchain experts. Christoph has actively contributed to the ratification process of several RISC-V extensions through PoC implementations... Read More →

Tuesday September 17, 2024 11:55 - 12:35 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

14:00 CEST

Surviving 19 Jan 2038 on 32 Bit Platforms: Lessons Learned and Common Problems - Alexander Kanavin, Linutronix

Tuesday September 17, 2024 14:00 - 14:40 CEST

Room 1.61 & Room 1.62 (Level 1)

The year 2038 problem is a well known integer overflow issue on many 32 bit platforms, some of which will be still in use on the day when it happens: January 19 2038. In this talk I would like to present where the problem comes from, what the Yocto project has done to address the issue, which base work in kernel and libc has been utilized to avoid a total system collapse, how to test a system's readiness for that date, and which further issues this has uncovered in common open source components. I hope this prompts an interesting discussion and further ideas to ensure the world does not go down in 14 years.

Speakers

Alexander Kanavin

Linux / Open Source software engineer, Linutronix

Alexander is an open source developer specializing in distribution engineering using vendor-neutral tooling and userspace stacks. He is one of the primary contributors to the Yocto project and has an interest in developing foundations of digital infrastructure in a sustainable ma... Read More →

Tuesday September 17, 2024 14:00 - 14:40 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

14:00 CEST

Tutorial: Securing Access to and from Remote Systems with WireGuard and Linux - Alex Feiszli, Netmaker, Inc.

Tuesday September 17, 2024 14:00 - 15:35 CEST

Room 0.49 - 0.50 (Level 0)

IT infrastructure is all over the place: Cloud VPC's, edge servers, data centers, office networks, and more. Much of it exists on private networks or behind routers and firewalls. IT administrators are often tasked with making these resources available over the internet to employees or remote servers that are elsewhere on earth. In this tutorial, we'll use just a couple of VM's running Linux and WireGuard to set up a minimal, secure, and easily-maintainable remote access system. We'll demonstrate with a fictional business that has a physical office, uses the cloud, and has remote IT staff, an extremely common scenario. We'll walk attendees through: 1. How to set up secure access to the office network from the remote staffs' workstations. 2. How to establish access to a cloud VPC from servers in the office network. 3. How to account for corporate firewalls and other common networking challenges. By the end of this tutorial, attendees will have a good understanding of how they can use Linux and WireGuard in common IT networking scenarios.

Speakers

Alex Feiszli

Founder, Netmaker, Inc.

Alex founded Netmaker, an open source, WireGuard-based VPN, 3 years ago, and was the original author of the project. Previously, Alex worked at IBM on Multi-Cloud Kubernetes projects, and with Red Hat on various DevOps projects. In his spare time, Alex likes to travel, play ukulele... Read More →

Tuesday September 17, 2024 14:00 - 15:35 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Intermediate

14:55 CEST

Messing up Your NUMA Topology with CXL - Hannes Reinecke, SUSE Linux

Tuesday September 17, 2024 14:55 - 15:35 CEST

Room 1.61 & Room 1.62 (Level 1)

his presentation will focus on CXL (Compute Express Link) as an advanced interconnect between machines and peripherals. CXL allows to leverage the PCIe physical interconnect to link together different device types (CPU, memory, I/O, cache, switches etc) into a combined hierarchy. This allows IHVs to create tailored solutions for eg large-scale AI systems or dynamic resource pooling between machines. As it's also possible to connect or pool memory resources it means the we can end up with some really interesting NUMA topologies. Plus we need to look at memory placement, as CXL memory is inherently hotpluggable, and as such not really suitable for some data structures like DMA areas etc. In this talk I will give an overview over CXL and the implications for NUMA topologies, and I'll be giving a short demo with an emulated CXL instance under qemu.

Speakers

Hannes Reinecke

Kernel Storage Architect, SUSE Linux

Studied Physics in Heidelberg from 1990 until 1997, followed by a PhD in Edinburgh 's Heriot-Watt University in 2000. Now working at SUSE Labs as Teamlead for storage and networking. Principal contact point for storage related issues on SLES. Linux addict since the earliest days (0.95... Read More →

Tuesday September 17, 2024 14:55 - 15:35 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

16:00 CEST

Panel Discussion: Outreachy Linux Kernel Internship Report - Julia Lawall, Inria; Hans Verkuil, Cisco Systems Norway; Tahera Fahimi, University of Calgary; Khadija Kamran; and Dorcas Litunya, Jomo Kenyatta University

Tuesday September 17, 2024 16:00 - 16:40 CEST

Room 1.61 & Room 1.62 (Level 1)

Come learn about the great accomplishments of our Outreachy Linux Kernel Interns! Outreachy offers open source internships to people subject to systemic bias and impacted by under-representation in the technical industry where they are living. Julia Lawall offers an overview of the Outreachy Linux Kernel Community followed by intern presentations showcasing their projects and experiences: * Dorcas Litunya: Improving support for the Vivid Test Driver * Khadija Kamran: Analyzing Linux Kernel Security Subsystems * Tahera Fahimi: Improving Landlock Access Control Linux Kernel Maintainer Hans Verkuil wraps up the panel by sharing his experience as an Outreachy mentor.

Speakers

Hans Verkuil

Cisco Systems Norway

Hans Verkuil started contributing patches to the MPEG encoder/decoder ivtv driver in early 2004 and it snowballed from there. He is a media subsystem co-maintainer responsible for V4L2 bridge drivers, video receivers and transmitters, and maintainer of the HDMI CEC framework. Since... Read More →

Julia Lawall

Researcher, Inria

Dorcas Litunya

Jomo Kenyatta University

Khadija Kamran

Intern

Tahera Fahimi

Outreachy Intern, University of Calgary

Tahera Fahimi is a graduate student at the University of Calgary.

Tuesday September 17, 2024 16:00 - 16:40 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Any

16:00 CEST

The Cyber Resilience Act: Navigating Its Impact on Yocto-Based Products - Julien Bernet, Witekio

Tuesday September 17, 2024 16:00 - 16:40 CEST

Room 0.49 - 0.50 (Level 0)

The Cyber Resilience Act is reshaping the landscape for Yocto-based products. Join us as we navigate the implications of this ever-changing legislation. • Introduction to the Cyber Resilience Act: an overview of the CRA, its objectives, and its relevance to the IoT and embedded systems industry. • Understanding the Key Provisions of the CRA/CSA that are relevant to Yocto-based product developers. • Yocto Project and Security Compliance: how Yocto supports security measures, including secure boot, code signing, and vulnerability management. • Regulatory and Compliance Challenges: the challenges and complexities associated with complying with cybersecurity regulations in the embedded systems space. • Building Secure Yocto-Based Products: best practices for building secure Yocto-based products that align with the CRA's requirements. • Impact on Product Development Lifecycle: how the Act affects different stages of the Yocto-based product development lifecycle.

Speakers

Julien Bernet

Head of Security, Witekio

Julien is the Head of Security for Witekio and has over 15 years of experience in the cybersecurity field. After completing his PhD in computer science, he worked for various software security labs with a focus on embedded devices and smart cards. Thanks to his work as a security... Read More →

Tuesday September 17, 2024 16:00 - 16:40 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Intermediate

16:55 CEST

Testing, a Journey from Testing Kernels to Testing Debian and Yocto - Sudip Mukherjee, Codethink Ltd

Tuesday September 17, 2024 16:55 - 17:35 CEST

Room 0.49 - 0.50 (Level 0)

Testing is an integral part of the software lifecycle. For software which are in continuous development it's even more important to have regular testing so that any bugs or errors can be detected early. In this talk, I will present how I started testing the Linux Kernel in a personal capacity and the status of Kernel testing that is now being done as part of Codethink. I will also present how that testing infrastructure has evolved to test Debian Sid on a RPI4 from a CI pipeline and the problems we had to overcome. That same infrastructure is now being modified to test Yocto from a gitlab CI pipeline.

Speakers

Sudip Mukherjee

Software Engineer, Codethink Ltd

A software engineer at Codethink Ltd for 8 years and involved with opensource for more than 10 years. Also, a Debian Developer and a member of Elisa TSC (Technical Steering Committee).

Tuesday September 17, 2024 16:55 - 17:35 CEST
Room 0.49 - 0.50 (Level 0)

Audience Level Beginner

11:00 CEST

UCSI, TCPM, PD, AltModes: Demystifying USB-C and Its Support in Linux - Dmitry Baryshkov, Linaro Ltd.

Wednesday September 18, 2024 11:00 - 11:40 CEST

Room 1.61 & Room 1.62 (Level 1)

Implementing Type-C support in Linux is not a simple task, platforms implementers have to understand different pieces of the Type-C stack (and various USB standards). This talk provides overview of the Linux USB-C subsystem and its different parts, basing on my experience with implementing and improving USB-C support for different Qualcomm platforms.

Speakers

Dmitry Baryshkov

Engineer, Linaro Ltd.

Dmitry has been working in embedded Linux area since 2006. Since 2007 he has been working in the development services area (at Siemens and Mentor Graphics). In 2015-2019 Dmitry has been working at Cavium Inc, improving system software for ThunderX and OcteonTX. In 2020 he has joined... Read More →

Wednesday September 18, 2024 11:00 - 11:40 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

11:55 CEST

VirtIo-Net PCIe Function Using Linux PCI Endpoint Framework - Shunsuke Mie, IGEL Co., Ltd.

Wednesday September 18, 2024 11:55 - 12:35 CEST

Room 1.61 & Room 1.62 (Level 1)

The PCI Endpoint framework enables the Linux kernel to act as a PCI Endpoint device. It allows software to describe the behavior of a PCIe function, which is a logical unit within a PCI device. This session will present the design and implementation of a virtio-net device using this framework.　Virtio is a para-virtualization framework designed to improve the efficiency of device I/O operations in virtualized environments. It enables software to emulate device behavior, leading to efficient data transfers in this case.　This session will discuss the architecture and current status of the proposed virtio-net PCI function driver based on the PCI endpoint framework. Additionally, it will introduce an API for controlling virtio virtqueues, which are used for data transfer. This API is generic and can be used to implement PCI Endpoint devices for other virtio devices.

Speakers

Shunsuke Mie

Middle Engineer, IGEL Co., Ltd.

Several years of experience in device drivers and other areas of the Linux kernel. I have a half decade of experience in software development ranging from firmware and embedded Linux, middleware.

Wednesday September 18, 2024 11:55 - 12:35 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

14:00 CEST

Writing Safe Async Code in Rust: Safeguarding Your Program's Concurrency! - Martin Mosler, Zühlke Engineering AG

Wednesday September 18, 2024 14:00 - 14:40 CEST

Room 1.61 & Room 1.62 (Level 1)

In recent years, the Rust programming language has gained popularity for its ability to provide safety guarantees for concurrent code, making it an ideal choice for developers looking to create secure open source products. However, while Rust offers robust features to prevent common programming errors and vulnerabilities, developers still play a crucial role in ensuring the correctness of their code. This presentation will explore the safety guarantees of Rust for concurrent async code and discuss how developers can take ownership of writing secure and correct code. Key Points: 1. Overview of Rust's safety guarantees for concurrent code 2. Understanding the role of developers in ensuring code correctness 3. Best practices for writing secure Rust code 4. Challenges and limitations of using Rust for developing secure software Overall, this presentation aims to educate attendees on the benefits and challenges of using Rust for developing secure products. By empowering developers to take charge of writing correct code, we can collectively contribute to a safer and more reliable digital ecosystem.

Speakers

Martin Mosler

Principal Embedded Software Consultant, Zühlke Engineering AG

Martin Mosler is a seasoned software engineer with expertise in developing secure embedded systems. With a background in Rust programming, he has firsthand experience implementing secure concurrent code and is passionate about sharing his knowledge with the community.

Wednesday September 18, 2024 14:00 - 14:40 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate

15:10 CEST

OpenPrinting - We Make Printing Just Work! - Till Kamppeter, OpenPrinting / Canonical

Wednesday September 18, 2024 15:10 - 15:50 CEST

Room 1.61 & Room 1.62 (Level 1)

Conference attendees to Till: Printing works better than under Windows or Mac! Michael Tunnell, TuxDigital, says in one of his videos: There is no such thing like a pain-free experience of printing under Windows ... Linux printing is ridiculously good ... Till Kamppeter, leader of the OpenPrinting project, and fellow of the Linux Foundation, will give an overview of his work. Going through OpenPrinting's history the components of the printing infrastructure of modern Linux (and other Posix-style) operating systems will get shown. - How did the Internet Printing Protocol (IPP) with the printing system CUPS being an implementation of it simplify printing a lot? - The printer driver challenge, good and bad cooperation with manufacturers, packaging and distributing ... - Desktop integration, GUI toolkits, print dialogs, setup tools, portals, ... Especially also the New Architecture of all-IPP printing and scanning and also the integration in immutable OS distributions will be treated ...

Speakers

Till Kamppeter

OpenPrinting Project Lead, OpenPrinting / Canonical

Lead of OpenPrinting since it was founded in 2001, introduced the CUPS printing system in Mandrake Linux in 2000 working at MandrakeSoft and with this and a lot of evangelism (booths, talks, tutorials) made the other distros also switch to CUPS, since 2006 print maintainer at Canonical... Read More →

Wednesday September 18, 2024 15:10 - 15:50 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Beginner

16:05 CEST

What Is an ABI, and Why Should You Care? - Shung-Hsi Yu, SUSE

Wednesday September 18, 2024 16:05 - 16:45 CEST

Room 1.61 & Room 1.62 (Level 1)

Application Binary Interface (ABI), in contrast to the more often heard Application Programming Interface (API), is not as widely discussed, but is every bit as important as the latter. It is what allows us to run programs that are compiled 10 years ago on the latest system, and still expect it to work. In this talk, we will introduce the audience to the concept of ABI, explain its difference from API, and and lay out what exactly breaks ABI, as well as cover the symptoms of such breakage. Further more, we will detail how ABI breakage can be detected or prevented, and discuss some specific cases: Linux Kernel's ABI, Python's stable ABI, and Foreign Function Interface.

Speakers

Shung-Hsi Yu

Kernel Engineer, SUSE

Mainly working on maintaining the BPF stack of SUSE Linux Enterprise Server (SLES) distribution, consisting of the BPF subsystem in the Linux Kernel, and it's user-space tooling: libbpf, bcc, and bpftrace.

Wednesday September 18, 2024 16:05 - 16:45 CEST
Room 1.61 & Room 1.62 (Level 1)

Audience Level Intermediate