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floofloof ( floofloof@lemmy.ca )  to Linux@lemmy.mlEnglish ·
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3 years ago

Fed-up Torvalds suggests disabling AMD’s 'stupid' performance-killing fTPM RNG

www.theregister.com

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Fed-up Torvalds suggests disabling AMD’s 'stupid' performance-killing fTPM RNG

www.theregister.com

floofloof ( floofloof@lemmy.ca )  to Linux@lemmy.mlEnglish ·
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3 years ago
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Some Ryzen Linux machines still stumble along despite efforts to fix it all
  • ArcticAmphibian ( ArcticAmphibian@lemmus.org ) 
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    3 years ago

    Sure, but does a grandmother’s Solitaire & Facebook PC really need quick encrypting and decrypting? Anyone not dealing with sensitive info doesn’t need one.

    • Shere_Khan ( Shere_Khan@lemmy.dbzer0.com ) 
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      3 years ago

      Yes, because they are the least likely to know they are a part of a botnet

      • JuxtaposedJaguar ( JuxtaposedJaguar@lemmy.ml ) 
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        3 years ago

        How would at-rest encryption make it less likely that your computer joins a botnet, or more likely that you’d notice if it did?

    • Solar Bear ( bear@slrpnk.net ) 
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      3 years ago

      There’s no downside to having it. There’s many downsides to not having it. This seems pretty cut and dry to me.

      • argv_minus_one ( argv_minus_one@beehaw.org ) Banned
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        3 years ago

        There’s no downside to having it.

        Sure there are. If it gets compromised with malicious code, I have no way of removing it.

        I can protect ring 0. I can keep crap out of ring 0. If all else fails, I can nuke everything in ring 0 and boot a fresh OS installation. But I can’t do a single bleeping thing except throw out the whole machine if malware takes over ring -1.

        • Solar Bear ( bear@slrpnk.net ) 
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          3 years ago

          This is already the case with your motherboard firmware, which fTPM is a part of. You are correct in that you have no real way to handle malware in it except throw it away. This doesn’t change in any way if you get rid of TPM.

          • argv_minus_one ( argv_minus_one@beehaw.org ) Banned
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            3 years ago

            It decreases the attack surface.

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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