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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. DWIZZZZZZZZZZZZLE‏ @dwizzzleMSFT 21 May 2020
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      DWIZZZZZZZZZZZZLE Retweeted Hector Martin

      Xbox is x86 based and threat model assumes full physical accesshttps://twitter.com/marcan42/status/1259857760138690567 …

      DWIZZZZZZZZZZZZLE added,

      Hector Martin @marcan42
      If you open your computer's case, it is already vulnerable to hacking, because no consumer x86 computer is secure under that threat model. Yes, this is another bullshit hyped attack with minimal practical consequence because under their threat model you are already pwned. https://twitter.com/WIRED/status/1259669698494509056 …
      Show this thread
      8 replies 33 retweets 217 likes
    2. Hector Martin‏ @marcan42 22 May 2020
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      Replying to @dwizzzleMSFT

      Hector Martin Retweeted Hector Martin

      Hey, I give you guys credit for that. https://twitter.com/marcan42/status/1259919123133263873 … The threat model does not assume *full* physical access though. Pretty it assumes the user does not have a FIB workstation ;)

      Hector Martin added,

      Hector Martin @marcan42
      Replying to @timb_machine @deanpierce @psifertex
      Oh, there are many x86 class devices that you'd *want* to avoid being affected by such attacks. But none of them *are*, except maybe the Xbox One. That one gets pretty close.
      2 replies 1 retweet 4 likes
    3. DWIZZZZZZZZZZZZLE‏ @dwizzzleMSFT 22 May 2020
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      Replying to @marcan42

      Haha yeah that’s fair

      1 reply 0 retweets 1 like
    4. Hector Martin‏ @marcan42 22 May 2020
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      Replying to @dwizzzleMSFT

      Also getting to design your own CPU is cheating. I know full well you guys didn't let AMD have the final word on the security architecture :P

      1 reply 0 retweets 3 likes
    5. DWIZZZZZZZZZZZZLE‏ @dwizzzleMSFT 22 May 2020
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      Replying to @marcan42

      AMD is bringing similar guarantees to mainstream CPUs https://www.amd.com/system/files/TechDocs/SEV-SNP-strengthening-vm-isolation-with-integrity-protection-and-more.pdf …

      1 reply 1 retweet 2 likes
      Hector Martin‏ @marcan42 22 May 2020
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      Replying to @dwizzzleMSFT

      Yeah, because you guys let them take some of your work :-) But I can guarantee they will screw it up, royally. They don't have that culture, and just being allowed to use some of the IP developed for Xbox One does not cut it.

      4:40 AM - 22 May 2020
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      • Dr. Hand Banana Pierre Bourdon
      2 replies 0 retweets 2 likes
        1. Hector Martin‏ @marcan42 22 May 2020
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          Replying to @marcan42 @dwizzzleMSFT

          Never mind actual motherboard vendors, etc, or the practicalities of modern general purpose OSes (i.e. the drivers are riddled with holes, especially for stuff like PCIe devices).

          0 replies 0 retweets 0 likes
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        1. Dr. Hand Banana‏ @ph_hofer 22 May 2020
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          Replying to @marcan42 @dwizzzleMSFT

          Indeed. After all, those would be the same folks who managed to ship a chip where RDRAND always returned 0xffffffff.

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