Cloud

Microsoft Built Its Own Custom Linux Kernel For Its New IoT Service (techcrunch.com) 199

At a small press event in San Francisco, Microsoft today announced the launch of a secure end-to-end IoT product that focuses on microcontroller-based devices -- the kind of devices that use tiny and relatively low-powered microcontrollers (MCUs) for basic control or connectivity features. TechCrunch reports: At the core of Azure Sphere is a new class of certified MCUs. As Microsoft president and chief legal officer Brad Smith stressed in today's announcement, Microsoft will license these new Azure Sphere chips for free, in hopes to jump-start the Azure Sphere ecosystem. Because it's hard to secure a device you can't update or get telemetry from, it's no surprise that these devices will feature built-in connectivity. And with that connectivity, these devices can also connect to the Azure Sphere Security Service in the cloud. For the first time ever, Microsoft is launching a custom Linux kernel and distribution: the Azure Sphere OS. It's an update to the kind of real-time operating systems that today's MCUs often use.

Why use Linux? "With Azure Sphere, Microsoft is addressing an entirely new class of IoT devices, the MCU," Rob Lefferts, Microsoft's partner director for Windows enterprise and security told me at the event. "Windows IoT runs on microprocessor units (MPUs) which have at least 100x the power of the MCU. The Microsoft-secured Linux kernel used in the Azure Sphere IoT OS is shared under an OSS license so that silicon partners can rapidly enable new silicon innovations." And those partners are also very comfortable with taking an open-source release and integrating that with their products. To get the process started, MediaTek is producing the first set of these new MCUs. These are low-powered, single-core ARM-A7 systems that run at 500MHz and include WiFi connectivity as well as a number of other I/O options.

Operating Systems

Linus Torvalds Says Linux Kernel v5.0 'Should Be Meaningless' (betanews.com) 165

An anonymous reader shares a report: Following the release of Linux kernel 4.16, Linus Torvalds has said that the next kernel will be version 5.0. Or maybe it won't, because version numbers are meaningless. The announcement -- of sorts -- came in Torvalds' message over the weekend about the first release candidate for version 4.17. He warns that it is not "shaping up to be a particularly big release" and questions whether it even matters what version number is slapped on the final release. He says that "v5.0 will happen some day. And it should be meaningless. You have been warned." That's not to say that Linux kernel v5.0 -- or whatever it ends up being called -- will not be significant. With the removal of old architecture and other bits of tidying up, with v4.17 RC1 there were more lines of code removed than added: something described as "probably a first. Ever. In the history of the universe. Or at least kernel releases."
Operating Systems

Linux 4.17 Kernel Offers Better Intel Power-Savings While Dropping Old CPUs (phoronix.com) 136

An anonymous reader writes: Linus Torvalds has released Linux 4.17-rc1. This kernel comes with a significant amount of new capabilities as outlined by the Linux 4.17 feature overview. Among the new features are AMDGPU WattMan support, Intel HDCP support, Vega 12 GPU enablement, NVIDIA Xavier SoC support, removal of obsolete CPU architectures, and even better support for the original Macintosh PowerBook 100 series. Phoronix testing has also revealed measurable power savings improvements and better power efficiency on Intel hardware. The kernel is expected to be stabilized by June.

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