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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. yan‏ @bcrypt 4 Apr 2017

      o darnhttps://www.qubes-os.org/news/2017/04/04/qsb-29/ …

      6 replies 23 retweets 46 likes
    2. Ben Laurie‏Verified account @BenLaurie 5 Apr 2017
      Replying to @bcrypt

      Qubes is a good idea but building it in top of Xen is not.

      2 replies 3 retweets 11 likes
    3. Joanna Rutkowska‏Verified account @rootkovska 7 Apr 2017
      Replying to @BenLaurie @bcrypt

      Qubes has flexible arch [1] which should make it easy to port to whatever other VMM or container technology... [1]https://blog.invisiblethings.org/2013/03/21/introducing-qubes-odyssey-framework.html …

      1 reply 0 retweets 0 likes
    4. Joanna Rutkowska‏Verified account @rootkovska 7 Apr 2017
      Replying to @rootkovska @BenLaurie @bcrypt

      ... except at this moment I don't see anything comparably strong (arch-wise) as Xen, still. Do you?

      2 replies 0 retweets 1 like
    5. Ben Laurie‏Verified account @BenLaurie 8 Apr 2017
      Replying to @rootkovska @bcrypt

      seL4?

      2 replies 0 retweets 1 like
    6. Joanna Rutkowska‏Verified account @rootkovska 8 Apr 2017
      Replying to @BenLaurie @bcrypt

      Did you try it? Can it run Linux drivers? Linux Apps? Support modern hardware, including S3 sleep? Properly parse DMAR and setup VT-d?

      3 replies 0 retweets 2 likes
    7. Ben Laurie‏Verified account @BenLaurie 10 Apr 2017
      Replying to @rootkovska @bcrypt

      BTW, "can run Linux drivers" is not top of my list for "is secure". Can run Linux apps, tho, coz you can run Linux as a guest. Allegedly.

      1 reply 1 retweet 0 likes
      Rich Felker‏ @RichFelker 10 Apr 2017
      Replying to @BenLaurie @rootkovska @bcrypt

      Running Linux drivers is not a problem as long as you don't put them in the kernel, & enforce IOMMU on the hardware they drive.

      6:58 AM - 10 Apr 2017
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Rich Felker‏ @RichFelker 10 Apr 2017
          Replying to @RichFelker @BenLaurie and

          That's actually what I have in mind for my eventual kernel replacement - drivers are heavily sandboxed user processes linked to fake Linux.

          5 replies 1 retweet 4 likes
        3. Ben Laurie‏Verified account @BenLaurie 10 Apr 2017
          Replying to @RichFelker @rootkovska @bcrypt

          QNX drivers were user processes. I really liked that model.

          3 replies 0 retweets 0 likes
        4. Joanna Rutkowska‏Verified account @rootkovska 10 Apr 2017
          Replying to @BenLaurie @RichFelker @bcrypt

          Ability to reuse existing widespread drivers is a must for any OS project if they want to support even moderate amount of COTS hardware.

          2 replies 0 retweets 2 likes
        5. Rich Felker‏ @RichFelker 10 Apr 2017
          Replying to @rootkovska @BenLaurie @bcrypt

          Absolutely. It's utterly stupid for an OS/kernel project to try to NIH drivers for everything.

          1 reply 0 retweets 0 likes
        6. Rich Felker‏ @RichFelker 10 Apr 2017
          Replying to @RichFelker @rootkovska and

          Unfortunately this leaves us stuck emulating the Linux kernel-internal driver APIs or similar.

          1 reply 0 retweets 0 likes
        7. David Metcalf‏ @dlmetcalf 12 Apr 2017
          Replying to @RichFelker @rootkovska and

          That's the route Genode took with dde_linux right? https://genode.org/documentation/developer-resources/porting_device_drivers …

          1 reply 0 retweets 1 like
        8. Rich Felker‏ @RichFelker 12 Apr 2017
          Replying to @dlmetcalf @rootkovska and

          Thanks for the link! Even better that source compat might be loading the .ko ELF files in user processes tho.

          0 replies 0 retweets 1 like
        9. End of conversation

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