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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. Patrick Walton‏ @pcwalton Jul 10

      Running any modern browser (or Electron app, like VS Code) in a VM with no graphics acceleration is…quite an eye-opening experience.

      4 replies 3 retweets 57 likes
    2. faern‏ @faernn Jul 11
      Replying to @pcwalton

      Yes. As someone who has been running Qubes OS (VMs with no gfx accel) for a few years, I'm painfully aware. 😢

      1 reply 0 retweets 0 likes
    3. Rich Felker‏ @RichFelker Jul 11
      Replying to @faernn @pcwalton

      Why don't they emulate a simple virtual gpu and implement it in terms of the host?

      1 reply 0 retweets 0 likes
    4. Patrick Walton‏ @pcwalton Jul 11
      Replying to @RichFelker @faernn

      “Simple GPU”? :) Even OpenGL ES 2 requires a shader compiler…

      1 reply 0 retweets 1 like
    5. Rich Felker‏ @RichFelker Jul 11
      Replying to @pcwalton @faernn

      Maybe there's no way to do it without giving something too close to equivalent to execution permission (especially considering sidechannels, memory protection bypass, etc.) on the real host GPU, but I think it's a problem that merits a lot more research.

      1 reply 0 retweets 0 likes
      Rich Felker‏ @RichFelker Jul 11
      Replying to @RichFelker @pcwalton @faernn

      Compiling to some virtual shader ISA in the guest, then performing a transformation that renders it much more checked (and slower) in software before passing it on to the shader compiler for the real GPU, seems at least plausible.

      12:44 PM - 11 Jul 2018
      1 reply 0 retweets 0 likes
        1. Patrick Walton‏ @pcwalton Jul 11
          Replying to @RichFelker @faernn

          Funny you bring that up—I actually want to look into doing something this with gfx-rs’s HAL and SPIR-V for the universal IR.

          0 replies 1 retweet 3 likes
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