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RISC-V and Raspberry Pi Secure

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Security
  • RISC-V Foundation Trumpets Open-Source ISAs In Wake Of Meltdown, Spectre

    The RISC-V Foundation says that no currently announced RISC-V CPU is vulnerable to Meltdown and Spectre and, in the wake of those bugs, stressed the importance of open-source development and a modern ISA in preventing vulnerabilities.

    In consumer computing, we usually only hear about two instruction set architectures (ISA): x86 and ARM. Classified as a complex instruction set, x86 dominates the desktop and server space. Since the rise of smartphones, however, reduced-instruction-set (RISC) ARM processors have dominated the mobile computing market. Beyond x86, there aren’t many complex instruction sets still in use, but there are still many relevant RISC designs despite ARM’s seeming ubiquity.

    The lesser known RISC-V ISA is among those being developed to take on ARM. It was created in the University of California, Berkeley and is unique because it’s open-source. The ISA is actively being worked on and is now overseen by the RISC-V Foundation, which includes companies such as AMD, Nvidia, Micron, Qualcomm, and Microsoft. An ISA alone doesn’t define a CPU design, though. RISC-V being open-source means that anyone is free to build their own CPU to implement the ISA, or their own compiler to build software that can run on RISC-V CPUs.

  • WHY RASPBERRY PI ISN’T VULNERABLE TO SPECTRE OR MELTDOWN

    Over the last couple of days, there has been a lot of discussion about a pair of security vulnerabilities nicknamed Spectre and Meltdown. These affect all modern Intel processors, and (in the case of Spectre) many AMD processors and ARM cores. Spectre allows an attacker to bypass software checks to read data from arbitrary locations in the current address space; Meltdown allows an attacker to read data from arbitrary locations in the operating system kernel’s address space (which should normally be inaccessible to user programs).

    Both vulnerabilities exploit performance features (caching and speculative execution) common to many modern processors to leak data via a so-called side-channel attack. Happily, the Raspberry Pi isn’t susceptible to these vulnerabilities, because of the particular ARM cores that we use.

    To help us understand why, here’s a little primer on so

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today's howtos

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    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

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