this post was submitted on 16 Oct 2025
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Mysterious Intrigue Around An x86 "Corporate Entity Other Than Intel/AMD" - Phoronix (www.phoronix.com)
submitted 2 days ago by cm0002@lemmy.zip to c/linux@programming.dev
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Posted to the Linux kernel mailing list and GNU Binutils mailing list today is an intriguing message from a longtime x86/x86_64 expert around a "a corporate entity other than Intel/AMD" using some x86 opcodes not used by AMD or Intel processors.

Longtime x86 expert Christian Ludloff posted a cryptic message to the LKML and Binutils mailing lists. An anonymous Phoronix reader in turn relayed the interesting occurrence to me. Christian Ludloff has worked for Google, AMD, TI, and others over the years as an x86 architecture expert as well as being known for his sandpile.org x86 CPU information site.

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[–] schnurrito@discuss.tchncs.de 7 points 2 days ago (2 children)

Some people may not have known this. I didn't know until now that there were other producers of that CPU architecture.

[–] kalpol@lemmy.ca 5 points 1 day ago (1 children)

Someone's forgotten Cyrix

[–] dukatos@lemmy.zip 2 points 1 day ago

And VIA, who bought it.

[–] unexposedhazard@discuss.tchncs.de 3 points 2 days ago

x86 and x86_64 are property of Intel and AMD iirc so they would know who licensed the architecture.