Linux Kernel: Major ARM64 Updates and Security Enhancements
Linus Torvalds merged significant ARM64 architecture updates including MPAM enablement and new PMU support, alongside security improvements for x86 SEV and TDX platforms. Additional updates included EDAC driver enhancements and microcode loading improvements.
Duration: PT2M5S
Episode overview
This episode is a short developer briefing from Linux Kernel.
It explains recent repository work in plain language.
- Show: Linux Kernel
- Published: 2026-04-14T00:00:00Z
- Audio duration: PT2M5S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, this is your Linux Kernel briefing for April 14th, 2026.
Today we saw substantial development activity with 30 commits merged across multiple kernel subsystems. The most significant update came from Linus Torvalds merging the ARM64 upstream changes, bringing major architectural improvements including MPAM enablement in drivers/resctrl and new PMU support.
Key ARM64 features include support for FEAT_LSUI, which allows futex atomic operations without toggling Privileged Access Never, improving performance. The update also includes TLB invalidation refactoring, memory management optimizations for hot-unplug operations, and extensive PMU support for NVIDIA's Tegra410 SoC.
EDAC updates added support for AMD Zen 3 processors and introduced GNR error information decoder support as an alternative to firmware decoders. The changes also include memory safety improvements with bounded flex arrays and read-only attribute tables.
Security-focused updates addressed x86 SEV and TDX platforms. The SEV changes modify SNP enablement to allow resource claiming only when SNP guests are actually launched, with API exports for module code. TDX updates include module version printing and…
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