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Intel Releases Updated Celeron & Pentium Silver CPU Microcode

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  • Intel Releases Updated Celeron & Pentium Silver CPU Microcode

    Phoronix: Intel Releases Updated Celeron & Pentium Silver CPU Microcode

    It's not too common for Intel to publish new CPU microcode updates outside of their "Patch Tuesday" regiment but that happened yesterday with a Friday night release of new CPU microcode although this time is limited to the Celeron and Pentium Silver families...

    Phoronix, Linux Hardware Reviews, Linux hardware benchmarks, Linux server benchmarks, Linux benchmarking, Desktop Linux, Linux performance, Open Source graphics, Linux How To, Ubuntu benchmarks, Ubuntu hardware, Phoronix Test Suite

  • #2
    Strange. In 3 months we'll probably find out what the issue was...

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    • #3
      Patch Tuesday regiment should be "regimen". A regiment is a military unit. A regimen is a method or process.

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      • #4
        No need to wait 3 months in this case. This microcode (rev 0x42) fixes a regression introduced in the Register File Data Sampling release (rev 0x40, March 2023 drop).

        The bug manifested as VMs spinning on boot and not starting up, running under Xen. It was reported by 4 downstream users (from XCP-ng and QubeOS) and Intel took it seriously.

        The symptoms were lovely. Seemingly every exception turned into a Divide Error.

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        • #5
          Originally posted by andyhhp View Post
          No need to wait 3 months in this case. This microcode (rev 0x42) fixes a regression introduced in the Register File Data Sampling release (rev 0x40, March 2023 drop).

          The bug manifested as VMs spinning on boot and not starting up, running under Xen. It was reported by 4 downstream users (from XCP-ng and QubeOS) and Intel took it seriously.

          The symptoms were lovely. Seemingly every exception turned into a Divide Error.
          Wow how did something like this slip by testing/QA ?!

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