Open-source News

Intel Speed Select Linux Tool Updated To Handle 32 Socket Servers

Phoronix - Wed, 08/09/2023 - 17:28
The intel-speed-select tool that lives within the Linux kernel source tree has seen a set of patches prepared for the upcoming Linux 6.6 merge window. Arguably most interesting with this updated Intel Speed Select tool is now the ability to work with more than eight CPU sockets per platform -- the new limit is 32...

AMD Inception / Speculative Return Stack Overflow Linux Mitigation Code Being Cleaned Up

Phoronix - Wed, 08/09/2023 - 17:05
As soon as the AMD Inception CPU vulnerability was made public yesterday, the Linux kernel mitigation patches were merged and within hours appeared in six new stable point releases for the kernel along with the Intel Downfall mitigation patches. Today though these patches are seeing a rework to clean-up this mitigation...

Six New Stable Linux Kernel Updates For Intel DOWNFALL & AMD INCEPTION

Phoronix - Wed, 08/09/2023 - 04:11
As a result of the AMD INCEPTION and Intel DOWNFALL speculative execution vulnerabilities published this Patch Tuesday, Linux 6.5 Git quickly picked up the patches on embargo expiration and now there are six new stable point releases for back-porting these CPU security vulnerabilites to the supported stable kernel series...

NVIDIA 535.98 Linux Driver Released With Several Fixes

Phoronix - Wed, 08/09/2023 - 03:55
NVIDIA today rolled out a new stable point release in their R535 series for Linux users to provide a handful of bug fixes...

Intel 20230808 Microcode Published For DOWNFALL, Other Security & Functional Issues

Phoronix - Wed, 08/09/2023 - 02:33
In addition to the Linux kernel patches for GDS/Downfall for reporting the mitigated state and handling around Intel's latest speculative execution vulnerability, the updated CPU microcode has now been published on GitHub. In addition to having the Downfall mitigations for Skylake through Icelake/Tigerlake, there are also other security updates and functional issues resolved by this Intel 20230808 CPU microcode release...

Intel DOWNFALL: New Vulnerability Affecting AVX2/AVX-512 With Big Performance Implications

Phoronix - Wed, 08/09/2023 - 01:00
This Patch Tuesday brings a new and potentially painful processor speculative execution vulnerability... Downfall, or as Intel prefers to call it is GDS: Gather Data Sampling. GDS/Downfall affects the gather instruction with AVX2 and AVX-512 enabled processors. At least the latest-generation Intel CPUs are not affected but Tigerlake / Ice Lake back to Skylake is confirmed to be impacted. There is microcode mitigation available but it will be costly for AVX2/AVX-512 workloads with GATHER instructions in hot code-paths and thus widespread software exposure particularly for HPC and other compute-intensive workloads that have relied on AVX2/AVX-512 for better performance.

Linux 6.5 Patches Merged For Intel GDS/DOWNFALL, AMD INCEPTION

Phoronix - Wed, 08/09/2023 - 01:00
There used to be a time when Patch Tuesday wasn't so busy in the Linux space, but certainly not this month... Linus Torvalds just pushed the kernel code changes around AMD INCEPTION and Intel DOWNFALL as well as other security patches...

AMD "INCEPTION" CPU Vulnerability Disclosed

Phoronix - Wed, 08/09/2023 - 00:33
AMD has kicked off a busy Patch Tuesday by disclosing INCEPTION, a new speculative side channel attack affecting Zen 3 and Zen 4 processors...

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