Intel

Linux I3C Gains "HDR" Support For Faster Data Transfers

I2C in Linux 6.19 brought support for Rust-written I2C drivers . The newer I3C "Improved Inter-Integrated Circuit" interface changes have now been merged and the big feature there is HDR support. Not to be confused with the more common High Dynamic Range acronym usage for HDR, HDR in the I3C context is for the "High Data Rate" mode for facilitating faster data transfers.

I3C HDR allows for faster data rates while running at the same frequency
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Arm MPAM Driver Upstreamed To The Linux 6.19 Kernel

The ARM64 code changes were merged last week into the in-development Linux 6.19 kernel. The most notable of the ARM64 architecture changes this cycle is landing the Arm MPAM driver for Arm's Memory System Resource Partitioning and Monitoring.

Arm MPAM (Memory System Resource Partitioning and Monitoring) is an architectural feature since Armv8.4 for managing shared memory resources like the CPU caches, memory bandwidth, and other resources that can then be partitioned. MPAM Is intended to help partition system resources
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Iced 0.14 Released For Popular Rust Cross-Platform GUI Library

Released today is a new version of Iced, the popular cross-platform GUI library for the Rust programming language. Iced is notably used by the COSMIC desktop environment and a growing variety of different Rust apps.

Iced provides a convenient Rust API for GUI needs, is type-safe, works across all major platforms and even web usage, supports responsive layout handling, and integrates well throughout the Rust ecosystem. On Iced.rs is a list of some of the popular Rust apps using Iced.

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Linux GPIB Drivers Declared Stable - 53 Years After HP Introduced The Bus

Merged to the mainline Linux kernel last year was GPIB drivers in the kernel's "staging" area . GPIB is the General Purpose Interface Bus launched by HP back in 1972 for lab equipment and more. After a year of cleaning up the code in the kernel's staging area, for Linux 6.19 the GPIB drivers have been promoted out of the staging area and into the Linux kernel proper. The Linux kernel now has stable driver support for this 8 Mbyte/s parallel bus that
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Linux 6.19 Introduces PCIe Link Encryption & Device Authentication, AMD SEV-TIO Enabling

One of the most exciting merges this weekend to the Linux 6.19 kernel is establishing the infrastructure for supporting PCI Express link encryption and device authentication. Multiple vendors are working on PCIe link encryption for their hardware while this initial pull begins laying the foundation of AMD SEV-TIO Trusted I/O support for the mainline kernel.

Dan Williams of Intel sent out the pull request for laying out the new PCI infrastructure for PCIe link encryption and device authentication. The first implementation of that new code is the AMD SEV-
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Apple Silicon

Linux 6.19 Delivers Working USB3 Support For Apple Silicon Devices

Merged last night for the Linux 6.19 kernel merge window were all of the USB and Thunderbolt driver changes. Standing out this cycle is Apple Silicon devices like the M1 Macs now having working USB3 support on the mainline Linux kernel.

There has been USB3 support in the downstream Asahi Linux project for a while but only now with the mainline Linux 6.19 kernel are the necessary patches in place for enabling USB3 support on these modern Apple Silicon devices... Sans the M3 and
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NVIDIA Plumbs DMA-BUF Support For VFIO PCI Devices In Linux 6.19

In addition to NVIDIA improving peer-to-peer (P2P) DMA for block devices in Linux 6.19, NVIDIA also led an effort providing DMA-BUF support for VFIO PCI devices for opening up some interesting new cases moving forward. As part of the VFIO pull request this new functionality has landed for Linux 6.19.

DMA-BUF support for VFIO PCI devices has been merged thanks to the work of NVIDIA's Leon Romanovsky and Jason Gunthorpe plus Intel's Vivek Kasireddy.

Using AI To Modernize The Ubuntu Error Tracker Produced Some Code That Was "Plain Wrong"

A week ago I wrote about AI being used to help modernize Ubuntu's Error Tracker . Microsoft GitHub Copilot was tasked to help adapt its Cassandra database usage to modern standards. It's worked in some areas but even for a rather straight forward task, some of the generated functions ended up being "plain wrong" according to the developer involved.

Some Phoronix readers had cheered over last week's article in arguing that modernizing codebases can be a great use for AI to help update to modern coding standards and removing
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Rust Drivers In Linux 6.19 Will Now Support... Module Parameters

On top of the Rust driver core changes and other Rust code for Linux 6.19 , the modules infrastructure for this new kernel version is also bringing some new code. Surprisingly, it's taken until now for Rust kernel modules/drivers to support module parameters as is common practice for passing different options when booting the kernel or manually loading kernel drivers with extra non-default options.

The headline change of the modules update for Linux 6.19 is now supporting Rust module parameters. The Git merge elaborates
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Linux 6.19 Adds New Console Font To Better Handle Modern Laptops With HiDPI Displays

Sent in for the Linux 6.19 merge window when it comes to the frame-buffer device "FBDEV" subsystem are just a set of "fixes" for FBDEV drivers and code clean-ups. But it does also include a new console font option for better supporting modern laptops with high density displays.

The FBDEV fixes pull request was already sent out today and subsequently merged by Linus Torvalds in short order. The only notable highlight is the introduction of a Terminus 10x18 console font option.
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