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Kernel: Patatt, Coreboot, Bootlin, and Latest Linux 5.14 Changes

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  • After UMN Debacle, Patatt Aims To Provide Cryptographic Attestation For Patches

    Linux kernel developer Konstantin Ryabitsev has been working on Patatt as a cryptographic-based patch attestation system. While started a while ago, there is renewed interest in such patch attestation following the University of Minnesota "hypocrite commit" debacle. 

    Patatt allows for optionally adding end-to-end cryptographic attestation to patches and its design is based on the DKIM email signature standard. Patatt can be used for signing code patches in workflows involving email patch submission, such as is the case for the Linux kernel development. 

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  • Hardware assisted root of trust mechanism and coreboot internals

    I started working for 9elements in October 2020 and my first assignment was to get Intel CBnT working on the OCP Deltalake using coreboot firmware. Intel Converged Bootguard and TXT is a hardware assisted method to set up a root of trust. In this blog post I will discuss some of the changes needed in coreboot to get this working. Setting CBnT up properly was definitely a challenge, but the work did not stop there. So while Intel CBnT provides a method to verify or measure the initial start-up code, it is not enough. You want to trust the code you run from start, the reset vector, to end, typically a bootloader. CBnT only takes care of the start. You have to make sure that each software component trusts the assets it uses and the next program it loads. This concept is called a chain of trust. Now in 2021 I have an assignment that involves supporting the older Intel Bootguard technology. Since Bootguard is very similar to CBnT, I'll also touch on that.

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  • Bootlin “Buildroot system development” course updated to Buildroot 2021.02

    Bootlin has been offering for several years a Buildroot system development course, which allows engineers interested in learning and understanding the Buildroot embedded Linux build system to get up to speed very quickly.

    In preparation for our public Buildroot system development course next week, we updated our training materials, both slides and labs to Buildroot 2021.02, which is the latest stable Buildroot release as of today, and is also a Long Term Support release.

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  • Linux 5.14 To Feature Enhanced Support For MikroTik 10G/25G NIC - Phoronix

    The Linux 5.14 kernel this summer will feature improved support for a new MikroTik 10G/25G NIC. 

    This network card works with the Linux kernel's existing Atheros atl1c network driver in the Linux kernel but for the 5.14 cycle is being extended to better support the capabilities of this MikroTik NIC. Details on this NIC though are light with it seemingly not launched yet. 

    Two pull requests so far have made it into "net-next" ahead of the Linux 5.14 cycle for improving this MikoTik 10G/25G NIC. First up is the initial support so the MikoTik NIC with the atl1c driver can enjoy a higher link speed, RX checksum offload, improved TX performance, and other improvements. 

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.