CareerCareer
How to Move from Embedded Linux to Edge AI: What Carries Over and What to Learn First
A practical plan for embedded Linux engineers moving into edge AI: what carries over, what is new, and how to prove a…
RB Oct 28 · 17 min
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Deep dives, debugging war-stories and career guidance for engineers who work where the kernel meets real hardware.
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Deep DivesDeep Dives
What PREEMPT_RT Changes: local_lock and migrate_disable (Part 3)
On PREEMPT_RT, local_lock and migrate_disable split one job in two: the macro expansions, the kernel's case against migration disabling, and the traps.
RB Oct 28 · 18 min
NewsNews
Kernel & Embedded News: __get_user() Removed in 7.4; ZDI Bugs Leak
Linux 7.4 completes the __get_user removal, ZDI kernel bug reports leak unpatched on LKML, file closing turns synchronous, and kernel builds get…
RB Oct 27 · 10 min
TutorialsTutorials
Building Linux for a RISC-V Board — Part 4: A Signed FIT Image U-Boot Will Verify
Build a signed FIT image holding the kernel, devicetree and boot script, and make U-Boot refuse a boot whose signature does not…
RB Oct 27 · 14 min
Kernel SecurityKernel Security
Linux Kernel CVEs: What to Patch by Device (18 – 24 Oct 2026)
656 Linux kernel CVEs (18 - 24 Oct 2026) with the minimum safe version per branch, including CVE-2026-99083 and CVE-2026-98805, and what…
RB Oct 24 · 13 min
Deep DivesDeep Dives
How the Kernel Handles System Suspend: A Source Walkthrough
A source walkthrough of Linux power management on 7.2: the five device lists, the four suspend phases, where a wakeup aborts the…
RB Oct 23 · 26 min
System DesignSystem Design
Embedded Linux Log Storage: RAM, Flash or Remote?
Embedded Linux log storage compared: RAM, local flash and remote upload, with journald and BusyBox settings and a default for shipped products.
RB Oct 22 · 8 min
Edge AIEdge AI
GPU Isolation on an Edge Board: Why Partitioning Alone Misses Deadlines
GPU isolation can partition SMs correctly and still miss deadlines on an edge board, because the power mode caps the GPU clock…
RB Oct 21 · 14 min
NewsNews
Kernel & Embedded News: ext4 Deprecates data=journal; Yocto 6.1 Nears
ext4 data=journal is deprecated in Linux 7.3 and will be removed in January 2028. Also: a reboot-reason framework, Yocto 6.1 and AI…
RB Oct 21 · 16 min
InsightsInsights
Linux 7.3: What Shipped, What Changed, Who Should Care
Linux 7.3 is out: one new syscall, five selectable scheduler cgroup modes, AF_ALG allowlisted by default, and four subsystems removed.
RB Oct 19 · 20 min
AutomotiveAutomotive
Zephyr Safety Certification: What the Kernel Scope Covers Beside Linux
Zephyr safety certification beside Linux: the IEC 61508 SIL 3 kernel scope, why SIL 3 is not ASIL D, and what the…
RB Oct 19 · 15 min
CareerCareer
Systems Thinking: The Skill That Helps Engineers Grow
Many serious failures happen in systems where every part did what it was designed to do. This post explains how feedback loops…
RB Oct 18 · 11 min
TutorialsTutorials
Building Linux for a RISC-V Board — Part 3: A Root Filesystem on a virtio Block Device
Put a real root filesystem on a virtio block device, let U-Boot find it, and boot it from a script instead of…
RB Oct 18 · 14 min
Kernel SecurityKernel Security
Linux Kernel CVEs: What to Patch by Device (11 – 17 Oct 2026)
49 Linux kernel CVEs (11 - 17 Oct 2026) with the minimum safe version per branch - including CVE-2026-99999, CVE-2026-98432 and what…
RB Oct 17 · 17 min
InsightsInsights
Shrinker Debugfs Shows Which Kernel Cache Holds Memory
The shrinker debugfs interface has shipped since Linux 6.0 and is off by default. It shows exactly how many reclaimable objects each…
RB Oct 17 · 15 min
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