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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 13 Nov 2018
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      Fun fact: AMD has *still* not released Zen microcode updates for Spectre on desktop chips (at least not in linux-firmware). Only for EPYC. amd-ucode/microcode_amd_fam17h.bin only contains ucode for stepping 2 (EPYC).

      2 replies 10 retweets 24 likes
    2. Crazy‏ @EthrosDemon 13 Nov 2018
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      Replying to @marcan42

      How long did it take Intel? Asking for a friend.

      1 reply 0 retweets 1 like
    3. Matthew Petry‏ @fire219_SIMPL 13 Nov 2018
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      Replying to @EthrosDemon @marcan42

      Looks like for initial microcode updates, less than a month after public disclosure. But there were additional releases in March, April, and September (though at least the Sept releases were mostly for Spectre v1.1 and 1.2 exploits)

      1 reply 0 retweets 0 likes
    4. Hector Martin‏ @marcan42 13 Nov 2018
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      Replying to @fire219_SIMPL @EthrosDemon

      No updates have been released for Linux for anything other than EPYC. The most recent microcode update contains *no* updates for stepping 1. At all. No patches are applied at kernel startup.

      1 reply 0 retweets 0 likes
    5. Matthew Petry‏ @fire219_SIMPL 13 Nov 2018
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      Replying to @marcan42 @EthrosDemon

      The question was about Intel, not AMD.

      1 reply 0 retweets 0 likes
    6. Hector Martin‏ @marcan42 13 Nov 2018
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      Replying to @fire219_SIMPL @EthrosDemon

      I'm talking about AMD. Yes, Intel released a bunch of updates covering steadily more CPUs. All my Intel systems are patched by intel-microcode.

      1 reply 0 retweets 1 like
    7. Matthew Petry‏ @fire219_SIMPL 13 Nov 2018
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      Replying to @marcan42 @EthrosDemon

      Yes, AMD is definitely asleep at the wheel there. I guess EPYC was rightfully the priority for getting patches out first as servers are a bigger and juicier target than normal users' computers, but they've had almost a full year (plus however much time previous to public notice).

      1 reply 0 retweets 0 likes
    8. Hector Martin‏ @marcan42 13 Nov 2018
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      Replying to @fire219_SIMPL @EthrosDemon

      I suspect they gave microcode updates to BIOS vendors and just didn't bother with Linux users. Looking through a BIOS update now to see if I can find something for Ryzen/TR.

      1 reply 0 retweets 1 like
      Hector Martin‏ @marcan42 13 Nov 2018
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      Replying to @marcan42 @fire219_SIMPL @EthrosDemon

      Yup, it's in there. I guess they give no fucks about desktop Linux users who may not have gotten a BIOS update.

      8:28 AM - 13 Nov 2018
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