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The second generation of AMD EPYC central processing unit (CPU), codenamed Rome, provides outstanding performance and “hardened at the code” security. It was launched in 2019 and has already been widely adopted. Support for AMD EPYC Rome has been merged to the Linux kernel starting with 5.4 series. Therefore, all Ubuntu releases with 5.4 ...
This article is written by Taiten Peng. Have you got i.MX6 hardware and are wondering how Ubuntu Core would run on it? In this blog, we will build an Ubuntu Core 18 image with the generic Ubuntu kernel for an i.MX6 based Boundary Devices board. The Nitrogen6X hardware from Boundary Device is well supported upstream ...
Ubuntu 20.04 LTS has just arrived. The latest LTS comes with a new version of the Linux kernel – 5.4 – which brings a lot of exciting new features, faster boot times, enhanced performance and security. Additionally, the Canonical kernel team ran benchmark tests to validate the performance improvements of the new kernel. Defining which ...
The linux-aws 4.15 based kernel, which is the default kernel in the Ubuntu 18.04 LTS AMIs, is moving to a rolling kernel model. Why is this changing? The Ubuntu rolling kernel model provides the latest upstream bug fixes and performance improvements around task scheduling, I/O scheduling, networking, hypervisor guests and containers to ou ...
Would you like to enhance your Linux security? Do you wonder what factors should be considered when evaluating your open source security from both – the infrastructure and the application perspectives? Are you keen to learn the Ubuntu security team approach? I’ve learned that CVE patching is indeed an important puzzle, but without a struc ...
Linux security is central to each release of Ubuntu, the most widely-used Linux distribution. With Ubuntu’s predictable six-month release cycle, users know when to expect the latest upstream open source capabilities and security. Long Term Support (LTS) vs Interim releases Every two years in April, a Long Term Support (LTS) release is pub ...
In this blog, we are going to explore how to leverage MAAS for hardware discovery and kernel auto-configuration using tags. In many cases, certain pieces of hardware require extra kernel parameters to be set in order to make use of them. For example, when configuring GPU passthrough we will typically need to configure the GPU ...
I often need to implement tests for new ACPI tables before they become available on real hardware. Fortunately, FWTS provides a framework to read ACPI tables’ binary. The below technique is especially convenient for ACPI firmware and OS kernel developers. It provides a simple approach to verifying ACPI tables without compiling firmware an ...
As details of the Meltdown and Spectre vulnerabilities1 have become clearer a number of statements have been published by the multiple vendors affected; Canonical has issued advisories and updates on fixes and mitigations, the latest of which includes a first round of Spectre mitigations. However, most of these statements focus on the mec ...
January 09 through January 23 The Kernel Team is completely focused on addressing any Spectre and Meltdown issues as they arise. A secure Ubuntu is our top priority. No new Livepatches are being produced and our regular SRU cycles are suspended while we address Spectre and Meltdown. Spectre mitigation kernels are available. The kernels i ...
November 21 through December 04 Development (18.04) Every 6 months the Ubuntu Kernel Team is tasked to pick the kernel to be used in the next release. This is a difficult thing to do because we don’t definitively know what will be going into the upstream kernel over the next 6 months nor the quality ...
October 24 through November 06 Development (18.04) Every 6 months the Ubuntu Kernel Team is tasked to pick the kernel to be used in the next release. This is a difficult thing to do because we don’t definitively know what will be going into the upstream kernel over the next 6 months nor the quality ...
