Phoronix

Linux kernel developers are looking at deprecating and ultimately removing the SLOB memory allocator...

In addition to Fedora 38 looking at creating Phosh images for mobile devices, Fedora developers now have clearance to go ahead and overhaul how their Fedora Linux live images are assembled...

Intel today published their "20221108" CPU microcode collection alongside announcing various security disclosures for the quarter. Fortunately on the CPU microcode side, the changes are all focused on functional issues...

Over the past three years one of Intel's many promising open-source software projects has been the Rust-written Cloud Hypervisor. Cloud Hypervisor started as just a modern, security-focused, cloud-centric Rust VMM hypervisor for modern hardware/software. It began as just one of many open-source software projects at Intel but last year was folded into the Linux Foundation umbrella while Intel continues to be a major contributor to the project. Coming as a bit of a surprise today is AMD announcing they have joined the Cloud Hypervisor project...

It looks like Fedora could be taking on more mobile ambitions with a Phosh image now proposed for running that Wayland shell focused on smartphones and tablets while delivering a good GNOME-based experience. Separately, a change proposal is expected for also introducing a Fedora Linux image with KDE Plasma Mobile...

Back in 2019 NVIDIA open-sourced the PhysX 4.1 SDK and was working on a PhysX 5.0 open-source code drop while we haven't heard anything more on the matter in the past two years. Coming out this morning as a surprise is the NVIDIA PhysX 5.1 SDK open-source release...

When it comes to new AMD AM5 motherboards featuring an X670 series chipset, one of the cheapest options right now is the ASRock X670E PG Lightning that retails for around $249 USD. I picked up one of these motherboards at launch and has been working out well on Linux for those wanting to build a cost-minded AMD Zen 4 desktop system.

New to the upcoming Mesa 22.3 release is Rusticl as a Rust-written OpenCL implementation for Mesa drivers. Rusticl supports OpenCL 3.0, handles OpenCL images and other features, works with multiple drivers, and is modern and maintained. Already among Mesa developers is a discussion that has begun around removing the older "Clover" OpenCL Gallium3D implementation once Rusticl has firmly hit parity with that older, unmaintained state tracker...

It's been a long time since there has been much in the way of notable Nouveau DRM driver changes merged to the Linux kernel for improving the open-source NVIDIA graphics support. Fortunately, that is changing with Linux 6.2 set to receive a rather big update...

Since the Linux 5.19 kernel there have been many reports on Twitter, Reddit, or forums, and elsewhere over open-source AMD Radeon driver users experiencing crashes that often then appear in the kernel log around fences timing out. A fix for this show-stopping bug for AMD gamers looks like it will be coming to the Linux 6.2 kernel...

Towards the end of October there finally came about a patch series fleshing out the "accel" subsystem for the Linux kernel in preparing this new subsystem/framework that builds atop the Direct Rendering Manager (DRM) code and is designed for all the up and coming AI accelerator drivers for the kernel. Given the number of accelerator drivers from different vendors eyeing mainline kernel adoption, this new compute accelerator framework is quickly being formed...

The NVK open-source NVIDIA Vulkan driver that was started earlier this year and has been progressing nicely the past few months is starting to see work now on its own shader compiler where as up to this point has been relying on existing Nouveau Mesa code for code generation...

Texinfo as the GNU typesetting syntax and the project's preferred documentation format is out with a major update...

Upstream Coreboot has phased out support for older AMD 14h / 15h / 16h series processors and associated motherboards...

Following my Core i5 13600K and Core i9 13900K Linux reviews for these new Raptor Lake processors, which were carried out under Ubuntu Linux, I've been carrying out my usual follow-up tests like looking at how well these new Intel CPUs are running under other distributions. To little surprise, Intel's own rolling-release Clear Linux distribution can offer some big-time improvements over a stock Ubuntu installation.

There has long been plans for supporting the Vulkan API with the Blender 3D modelling open-source software but there has been a lack of developers working on it. Fortunately, things are starting to (slowly) come together on Vulkan enablement for Blender...

With the AMD Radeon RX 7900 XT / RX 7900 XTX having been announced last week and set to ship on 13 December, it's down to crunch time for ensuring that the open-source Linux driver support is in shape. Unlike on the Windows side where it's just expected of the user to navigate to AMD.com and download a convenient driver installer, on Linux that's not exactly the case. AMD will likely have their Radeon Software for Linux driver package on their website but that is limited in scope to their few supported enterprise/LTS Linux distributions supported, while most gamers/enthusiasts will be left wondering about the Linux kernel and Mesa versioning requirements...

An ugly hack within the Linux kernel that has been in mainline for over three years has been called out. Due to a buggy X.Org Server / xf86-video-modesetting DDX, the Linux kernel has been imposing different behavior on whether a process starts with "X" and in turn disable the atomic mode-setting support...

With next-generation Meteor Lake CPUs the integrated graphics are set to have native HDMI 2.1 display capabilities. Intel's open-source Linux kernel driver has begun those HDMI 2.1 preparations and sent out today were early patches for enabling HDMI 2.1 Fixed Rate Link (FRL)...

Intel compiler engineers continue being very busy working to land as much of the new CPU feature support as they can into GCC 13 for what is the next annual compiler release that will debut as GCC 13.1 in the early months of 2023...

Debuting on Sunday was Meson 0.64 as the newest version of this open-source build system that is increasingly being used by a variety of software projects for its speed, good cross-platform support, and overall feature set compared to alternatives...

Linus Torvalds just released Linux 6.1-rc4 as the latest weekly test release for the in-development Linux 6.1 kernel...

Along with the likes of OBS Studio adding NVENC AV1 support for enjoying GPU-accelerated AV1 video encoding with GeForce RTX 40 series GPUs, the widely-used FFmpeg library has merged its support for NVIDIA NVENC AV1 video encoding...

Last month Red Hat engineer Hans de Goede warned that old and "weird" laptops could see broken backlight controls with the upcoming Linux 6.1 kernel. He issued a call for testing and as a result was provided valuable feedback that led to some new fixes now on the way. But there still is more work ahead and he's requested further testing by Linux laptop users to ensure the reworked backlight handling is in good shape...

Made public earlier this year was Spectre-BHB / BHI as a speculative execution vulnerability similar to Spectre V2 and affecting Intel and Arm CPUs. At the time Neoverse N2 / N1 / V1 and older cores like Cortex-A15 / A57 / A72 were known to be vulnerable and required software mitigations. The upcoming AmpereOne is also vulnerable to Spectre-BHB and has a patch now on its way to the Linux kernel for mitigating this Spectre class vulnerability...

"BTRFS_RESERVE_FLUSH_EMERGENCY" is on the way for the Linux 6.2 kernel for dealing with some issues that originally turned up within Facebook's data centers where they were seeing routine out-of-space transaction aborts. With BTRFS_RESERVE_FLUSH_EMERGENCY, Btrfs will try harder to avoid aborted transactions when running out of space...

As an enhancement to the out-of-the-box Linux kernel in its default x86_64 configuration, it was being eyed to enable Indirect Branch Tracking by default. That change to enable IBT by default has been picked up by TIP's x86/core branch, thus putting it on deck as material for submitting with next month's Linux 6.2 merge window...

LXQt 1.2 is out this morning as the newest feature update to this lightweight, open-source desktop environment that currently targets the Qt 5.15 LTS toolkit...

AMD on Friday submitted a new round of patches for AMDGPU kernel graphics driver updates they have ready for the upcoming Linux 6.2 cycle...

This summer AMD began posting Linux kernel patches for Quality of Service "QoS" features with new AMD CPUs. Sent out on Friday were the newest iteration of these QoS extension patches around SMBA and BMEC with these features likely premiering on AMD EPYC "Genoa" processors...

It's Saturday morning and that means there is a new weekly blog post by KDE developer Nate Graham about the prominent desktop changes that occurred this week...

A Friday patch series reveals a new security feature with Zen 4 previously not documented: Automatic IBRS...

On the same day as new GCC compiler patches for next-generation processors coming out for those wares that are more than one year out, the GNU Compiler Collection dropped a remnant from Intel's past: the Many Integrated Core "MIC" architecture support with Xeon Phi for offloading...

A patch on its way to the mainline Linux kernel tunes Alder Lake N and Raptor Lake P mobile processors to have slightly lower power consumption out-of-the-box to help with battery life and thermal characteristics...

Stemming from the recent discussion of Intel's open-source Linux driver for Arc Graphics not yet running on POWER, another rather interesting support caveat was also raised. It turns out updating the GSC firmware for Arc Graphics hardware currently requires the Intel Management Engine (ME) functionality, which basically limits the graphics card firmware updating in turn to systems with Intel CPUs...

While Xeon Scalable "Sapphire Rapids" will finally see its formal launch in January as recently revealed by Intel, it will then be succeeded down the road by Emerald Rapids. Succeeding Emerald Rapids will then be Granite Rapids to which there is now an initial GCC compiler enablement patch posted. Granite Rapids won't be out until at least well into 2024 while fortunately they have already begun their compiler enablement work to ensure that new CPU instructions and other capabilities are in place well ahead of launch...

BOLT as the Facebook/Meta-developed tech for optimizing binaries in the name of greater performance by optimizing the code layout was merged to mainline LLVM at the start of the year. Now as we approach the end of the year BOLT is getting a bit of a promotion with being flipped on by default for Linux x86_64 and AArch64 test releases...

Microsoft has issued a big update to their in-house Linux distribution, CBL-Mariner, with a few new packages introduced as well as various updates to existing packages and other OS modifications...

As was expected, AMD's Lisa Su just announced the Radeon RX 7000 series "RDNA3" graphics cards. AMD continues to back their graphics processors by fully open-source Linux driver support and Linux benchmarks will come on Phoronix for launch. Here are the initial details on the announced Radeon RX 7900 XT and Radeon RX 7900 XTX graphics cards.

With CPU core counts continuing to rise, we've seen various optimization efforts in recent times to help with the boot speed of getting large servers online. One of the latest discoveries can trim down the boot speed by up to 30 seconds for some large servers and what appears to be a next-generation AMD EPYC "Genoa" platform...

Next week already marks ten years since Valve made public their Steam on Linux beta builds while today Google has advanced Steam on ChromeOS / Chromebooks to beta. Back in March Google formally announced Steam for Chrome OS and began with alpha support for select devices. Today that support has reached beta with new device support, new features, and other improvements...

A set of patches were posted on Wednesdasy for "blksnap", a proposed kernel driver to allow creating non-persistent snapshots of arbitrary kernel block devices. Among the possible uses with blksnap would be for creating backups at the block storage device level...

Vulkan 1.3.233 is out as the latest weekly spec update to this high performance graphics and compute API. With Vulkan 1.3.233 comes three new NVIDIA-developed vendor extensions...

Back in September was a proposal to promote Rust's UEFI firmware targets to tier-2. With the current tier-3 designation the Rust UEFI targets they currently lack continuous integration (CI) guarantees and official builds in the Rust release channels, which means users wanting to use Rust for targeting the UEFI binaries need to rely on nightly/unstable compiler builds...

Making good progress this year has been the open-source FEX-Emu emulator for running x86/x86_64 Linux binaries on 64-bit Arm (AArch64). This isn't only for running Linux x86_64 applications on Arm but with Steam and Steam Play (Proton) can mean running Windows games on Linux 64-bit Arm. With FEX 2211 out today more progress has been made on the Proton front for getting more modern games running...

Besides open-source drivers being loved by Linux enthusiasts for the greater technical clarity/insight, better security with the ability to verify the driver's behavior, and better durability of the driver over the longer-term, another common open-source driver benefit is being able to get the drivers working on other CPU architectures not otherwise a focus by the upstream hardware vendor. With Intel's open-source graphics driver stack for Arc Graphics and also in the data center with the Data Center GPU Flex Series and forthcoming Ponte Vecchio, it's drawn interest from ARM, RISC-V, and POWER folks. Unfortunately at least in the case of the POWER9 hardware, the current Intel Linux graphics driver isn't yet building properly there...

The latest patches from Microsoft for the Linux kernel are for extending the kernel's support to allow running on a nested Microsoft (MSHV) hypervisor...

Since last year have been patches enabling the Raspberry Pi to output at 4K with a 60Hz refresh rate. But since Linux 5.18 at least some of the 4K handling had regressed for this budget Arm single board computer. With the Linux 6.2 cycle in December there are several 4K related improvements to the Raspberry Pi open-source display driver for addressing that prior regression as well as making the 4K monitor handling more robust...

One of the last features to land in Mesa 22.3 prior to yesterday's branching and Mesa 22.3-rc1 release is enabling the Mesa shader disk cache for Panfrost, the Arm Mali open-source driver for Midgard and Bifrost generations...

Feature work on Mesa 22.3 has now concluded as this quarter's feature release to this collection of open-source OpenGL, OpenCL, and Vulkan drivers. Mesa 22.3 was branched this afternoon and Mesa 22.3-rc1 now issued as the first weekly test release leading up to the stable debut in a few weeks...