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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. Hector Martin‏ @marcan42 10 Mar 2020
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      CPU bug wars update: the latest attack against AMD CPUs just leaks memory access patterns. This is basically inherent in how caches work. It's not even a speculation attack. Intel still has the lead in designing CPUs that give up all their secrets *by design* in speculation.

      6 replies 56 retweets 245 likes
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    2. Blakeyrat‏ @blakeyrat 10 Mar 2020
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      Replying to @marcan42

      You think Intel DESIGNED their chips to cause security problems and lose them sales? Come the fuck on.

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 10 Mar 2020
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      Replying to @blakeyrat

      I think intel DESIGNED their chips under the mantra that anything that happens in speculation doesn't matter and no transistor shall be "wasted" on that, and any engineers who brought up security concerns were ignored.

      1 reply 0 retweets 2 likes
    4. Blakeyrat‏ @blakeyrat 10 Mar 2020
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      Replying to @marcan42

      You realize that nobody, nobody anywhere, brought up security concerns about these features until they'd been in every CPU for like over a decade, right? It's not JUST Intel that missed it. Either don't turn an "oops" into "Intel engineers are evil monsters!" Ridiculous.

      1 reply 0 retweets 0 likes
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    6. Blakeyrat‏ @blakeyrat 10 Mar 2020
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      Replying to @kc8apf @marcan42

      And then they just kept mum and let it happen for years and years.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 10 Mar 2020
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      Replying to @blakeyrat @kc8apf

      That's called working in a corporate environment, yes. When management doesn't care, there's nothing you can do.

      10:18 AM - 10 Mar 2020
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