this post was submitted on 26 Apr 2025
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[–] Alphane_Moon@lemmy.world 13 points 5 days ago* (last edited 4 days ago) (18 children)

The patch series today though would end support for original i486 processors as well as early i586 processors. The kernel patches would remove support for CPUs lacking TSC and CX8/CMPXCHG8B capabilities. Basically this would put the minimum upstream Linux kernel support for 32-bit processors at the original Pentium CPU with CMPXCHG8B and Time Stamp Counter (TSC) support.

There were 586 CPUs that were not Pentiums? Article implies the original Pentium would be the new baseline, but then what 586 CPUs would lose support?

[–] Geodad@lemm.ee 1 points 4 days ago (3 children)

I believe i686 were the first Pentium chips.

[–] Nollij@sopuli.xyz 4 points 4 days ago (2 children)

They were named pent-ium because they were 586. Of course, the name lasted a lot longer than the technical reasons.

The Pentium Pro was i686.

[–] Geodad@lemm.ee 1 points 3 days ago

That's a cool bit of computer science trivia.

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