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News Intel announces Internet of Things Platform

Discussion in 'Article Discussion' started by Gareth Halfacree, 10 Dec 2014.

  1. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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  2. PCBuilderSven

    PCBuilderSven New Member

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    I'm not going to pretend I actually know anything about the F00F bug but while reading up what it is, i came across this:

    What does this then mean for the presence of the F00F bug on the quark, I can hardly see Intel restoring a bug they had previously fixed?
     
  3. Corky42

    Corky42 What did walle eat for breakfast?

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    Going on what i read, no it doesn't.
    The F00F bug affected all Pentiums from model 0 through 8, Quark is model 9.
    I think it maybe thought that the bug still exists because Linux picks up the Quark as a Pentium, so thinks/reports that the bug is present.
     
  4. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    As far as I'm aware, the Linux kernel detects the F00F bug correctly in the Quark, and works around it automatically and invisibly. That's my understanding, anyway: I've got a Galileo 'ere with Quark chip on-board, and the kernel activates its F00F workaround. If the bug (sorry, Intel, 'erratum') isn't present on the Quark, then the Linux kernel is suffering from a false positive and activating a workaround where it isn't required. As I say, though, as far as I'm aware that isn't the case: I understand the bug is present, as the Quark is nothing more than a die-shrink of the faulty Pentium microarchitecture.

    I've got an Edison on the way, which uses a newer Quark chip and a designed-by-Intel Linux variant; once that's arrived, I'll do some more investigation to see if the bug really is present or not.
     
  5. Corky42

    Corky42 What did walle eat for breakfast?

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    Yea, I mean i can't pretend i know one way or the other, i was just repeating what i read, specifically here, and here.
     
  6. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    Oh, I'm perfectly prepared to be wrong! If it turns out the Quark doesn't have F00F, then I'll submit a bug report to the Linux kernel warning of a false positive; if it does have F00F, I'll do a smug little grin and maybe treat myself to a bottle of beer for being a clever-clogs.
     
  7. Corky42

    Corky42 What did walle eat for breakfast?

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    I would be interested in the result either way, if/when you have the time/resources to find out.
     

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