Linux Kernel: S390 Architecture Updates and Auth Protocol Fixes
Linus Torvalds merged significant S390 platform improvements including PCI enhancements and security features, alongside critical NVMe authentication protocol fixes. The kernel also received updates for Hyper-V, debugging tools, and filesystem tracing components.
Duration: PT2M2S
Episode overview
This episode is a short developer briefing from Linux Kernel.
It explains recent repository work in plain language.
- Show: Linux Kernel
- Published: 2026-04-22T00:00:00Z
- Audio duration: PT2M2S
Transcript excerpt
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Good morning, this is your Linux Kernel briefing for April 22nd, 2026.
Today's activity centers on major platform updates and security improvements across 30 commits with no merged pull requests.
Linus Torvalds integrated substantial S390 architecture updates, adding CONFIG_PAGE_TABLE_CHECK support and exposing PCI function UIDs as arch-specific slot attributes. The changes include a new arch_raw_cpu_ptr() implementation that reduces the default configuration size by 27 kilobytes, plus enhanced KASLR…
Hyper-V received improvements for cross-compilation support and better channel interrupt handling. The updates fix vmemmap_shift issues and introduce new tracing capabilities for MSHV virtualization components.
Two significant NVMe authentication fixes address protocol compliance issues. Chris Leech corrected the session key generation to properly hash DH shared secrets according to specification section 8.3.5.5.9, reducing redundant hash operations. Alistair Francis fixed the Response Value hash calculation to include…
Additional updates include tracefs fixes for SRCU-protected operations and eventfs mutex handling, ring buffer improvements for standalone hypervisor builds, and TOMOYO…
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