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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. whitequark‏ @whitequark Oct 9

      today i learned that "SD Express" is a thing. that is, SD card with a PCIe interface. IOMMU should be mandatory on literally all hardware with PCIe in 2018

      9 replies 64 retweets 210 likes
      Show this thread
    2. whitequark‏ @whitequark Oct 9

      seriously. they show you in the whitepaper how it can DMA everywhere like that's a feature https://www.sdcard.org/downloads/pls/latest_whitepapers/SD_Express_Cards_with_PCIe_and_NVMe_Interfaces_White_Paper.pdf …pic.twitter.com/bDrCYjt1RB

      4 replies 28 retweets 82 likes
      Show this thread
    3. whitequark‏ @whitequark Oct 9

      i predicted a while ago that everything's going to converge to 8b10b or 64b/66b over differential pair but i have not expected that the industry will implement this by literally sticking PCIe in every hole where they can get the signal to stay on traces

      3 replies 15 retweets 87 likes
      Show this thread
    4. whitequark‏ @whitequark Oct 9

      not sure how i missed this; why the fuck does your whitepaper show your SD card talking directly to a modem? what are you people on?! cURSEDpic.twitter.com/RyTNE5Awuo

      13 replies 36 retweets 122 likes
      Show this thread
      Rich Felker‏ @RichFelker Oct 10
      Replying to @whitequark

      Some hardware person is deluded that there's a reasonable operating system design where files get uploaded or downloaded directly from/to storage device.

      10:07 AM - 10 Oct 2018
      • 8 Likes
      • Joachim Schipper Gilad Ben-Yossef @  #OSSummit #LFELC technopagan ⁧✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨ серафими многоꙮчитїи trap15 🎃 A.Marshall Jann Horn Ted Mielczarek Svetislav Pintorović 1440
      3 replies 0 retweets 8 likes
        1. New conversation
        2. Rich Felker‏ @RichFelker Oct 10
          Replying to @RichFelker @whitequark

          The misconceptions of how hardware people think software could reasonably use the interfaces they provide are really fascinating.

          1 reply 7 retweets 34 likes
        3. 3 more replies
        1. Gilad Ben-Yossef @ #OSSummit #LFELC‏ @giladby Oct 11
          Replying to @RichFelker @whitequark

          I understand the sentiment but that's more or less how NVMe over Fabric works and it is supported in Linux. Not implying that it is sane, only that it is done :-)

          0 replies 0 retweets 0 likes
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        1. Svetislav Pintorović 1440‏ @TutaBlgarin Oct 10
          Replying to @RichFelker @whitequark

          Chinese hardware backdoor conspiracy, I tell you!

          0 replies 0 retweets 0 likes
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