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27 January

AMD Ports Register Shadowing To The Mesa RADV Vulkan Driver
AMD Ports Register Shadowing To The Mesa RADV Vulkan Driver
27 January 11:00 AM EST - Radeon - RADV Register Shadowing - 19 Comments

Most of the Mesa Radeon Vulkan "RADV" driver development has been done by the likes of Valve, Google, and Red Hat engineers with it being an "unofficial" driver while AMD supports AMDVLK as their official open-source Vulkan driver as well as supporting their closed-source AMDGPU-PRO Vulkan driver too that shares common code with their Windows Vulkan driver. It was pleasant to see AMD this week though submitting new feature code to RADV.

Linux Developers Evaluating New "DOITM" Security Mitigation For Latest Intel CPUs
Linux Developers Evaluating New "DOITM" Security Mitigation For Latest Intel CPUs
27 January 07:00 AM EST - Software - 22 Comments

Last summer Intel published guidance around the Data Operand Independent Timing (DOIT) instruction mode that can be enabled with recent generations of Intel processors to ensure constant time execution for a subset of the Intel instruction set, which can be particularly important for cryptographic algorithms. Linux kernel developer discussions fizzled out last year over handling this DOIT functionality for what is described as a CPU vulnerability with recent Intel CPUs. However, now a Linux kernel patch from a Google developer would enable this change unconditionally for newer Intel CPUs but raises performance concerns.

Intel Releases HAXM 7.8 As One Last Hurrah For The Open-Source Project
Intel Releases HAXM 7.8 As One Last Hurrah For The Open-Source Project
27 January 05:55 AM EST - Intel - Intel HAXM 7.8 - 9 Comments

Earlier this month Intel announced they would be discontinuing development of HAXM as a hardware-accelerated execution manager that's been popular on Windows and macOS for Android emulation. While the original announcement discontinued its development immediately, they decided to go ahead and put out one final version: Intel HAXM 7.8 is available today for concluding this open-source project.

Microsoft's Dzn Mesa Driver Already Hits Vulkan 1.2
Microsoft's Dzn Mesa Driver Already Hits Vulkan 1.2
27 January 05:45 AM EST - Microsoft - Dozen On Vulkan 1.2 - 14 Comments

Microsoft engineers seem to be working on getting the Dozen "dzn" Mesa driver up to speed as quickly as possible. It was just earlier this month it began passing nearly all Vulkan 1.0 conformance tests, Vulkan 1.1 was then exposed just a few days ago, and now Dzn is ironing out Vulkan 1.2.

26 January

Linux 6.3 EDAC Prepares For Intel Granite Rapids With Up To 12 DDR5 Memory Channels
Linux 6.3 EDAC Prepares For Intel Granite Rapids With Up To 12 DDR5 Memory Channels
26 January 12:00 PM EST - Intel - i10nm EDAC - Add A Comment

Intel open-source engineers continue to be quite busy in bringing up the Linux support for Emerald Rapids as the successor to Sapphire Rapids and then as well for Granite Rapids as the Xeon Scalable processors following that. With the i10nm EDAC changes queued up ahead of Linux 6.3, there is support through Granite Rapids as well as confirming Granite Rapids supporting up to 12 channel DDR5 system memory.

BSD-Powered helloSystem 0.8 Performance Against Linux On AMD Zen 4
BSD-Powered helloSystem 0.8 Performance Against Linux On AMD Zen 4
26 January 08:00 AM EST - Operating Systems - 33 Comments

With many Phoronix readers having been excited by the recent helloSystem v0.8 release as a FreeBSD-powered OS taking major design inspiration from Apple's macOS, I decided to run some benchmarks to see how this FreeBSD 13.1 based operating system was competing with a few different Linux distributions from an AMD Ryzen 9 7950X (Zen 4) desktop.

25 January

Arm Helping With AArch64 Rust Linux Kernel Enablement
25 January 02:30 PM EST - Arm - AArch64 + Rust + Linux Kernel - 12 Comments

Much of the Rust programming language support/infrastructure for the Linux kernel thus far has been with an x86_64 focus while obviously AArch64 is an important target as well. It's nice to see Arm Limited engineers working on the Rust Linux kernel support for AArch64/ARM64.

Google Engineer Introduces "Light AVX" Support Within LLVM
25 January 09:00 AM EST - LLVM - Light AVX - 5 Comments

Google engineer Ilya Tocar has introduced the notion of "light" AVX support within the LLVM compiler infrastructure for utilizing some benefits of Advanced Vector Extensions (AVX) but trying to avoid the power/frequency impact that AVX-512 use has on older generations of Intel processors.

AMD Publishes New Firmware Binaries For Upcoming Hardware
25 January 08:52 AM EST - AMD - Likely Ryzen 7000 Series Mobile - 2 Comments

Hitting the linux-firmware.git tree this morning were new AMDGPU firmware files for IP blocks found on upcoming hardware. It's likely these new firmware files are for the forthcoming Ryzen 7040 series mobile processors with RDNA3 graphics.

Microsoft's Dzn Mesa Driver Now Exposes Vulkan 1.1
25 January 06:08 AM EST - Microsoft - Dozen With Vulkan 1.1 - 4 Comments

After Microsoft engineers got Vulkan 1.0 conformance tests to nearly 100% for their Dozen "Dzn" Mesa driver, they have now enabled Vulkan 1.1 support as their next step for this Vulkan-atop-Direct3D 12 open-source implementation.

Stratis Storage 3.5 Released With Encrypted Cache Support
25 January 03:00 AM EST - Linux Storage - Stratis 3.5 - 16 Comments

Red Hat continues investing in Stratis Storage as their modern Linux storage solution built atop XFS and LVM with intentions of providing ZFS and Btrfs like functionality but atop a mature and proven base. Released on Tuesday was Stratis 3.5 as the latest version of their Rust-written daemon.

24 January

systemd 253 RC1 Released With New "ukify" Tool
24 January 06:34 PM EST - systemd - systemd 253-rc2 - 46 Comments

Systemd developers today released their first release candidate of the upcoming systemd 253 feature release, which introduces a new "ukify" tool and has many other changes for this dominant Linux init system.

Sound Open Firmware 2.4.1 Continues The Transition To Zephyr RTOS
24 January 07:54 AM EST - Free Software - SOF 2.4.1 - 6 Comments

Sound Open Firmware 2.4.1 is out today as the first stable v2.4 release for this open-source audio / DSP firmware stack for not only modern Intel platforms but AMD, Mediatek, and other increasing industry use as well. With Sound Open Firmware 2.4 they have continued the transition in making use of Zephyr RTOS.

AMD SMBA+BMEC QoS Features For 4th Gen EPYC "Genoa" Positioned For Linux 6.3
24 January 07:01 AM EST - AMD - x86 resctl - Add A Comment

Going back to last August AMD Linux engineers began posting Linux kernel patches for new Quality of Service features coming with Zen 4. After a few rounds of review and updates to those patches, this work enabling the AMD SMBA and BMEC features for 4th Gen EPYC "Genoa" processors appear positioned for introduction in the Linux 6.3 kernel cycle.

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