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Mysterious Intrigue Around an x86 "Corporate Entity Other Than Intel/AMD"

a day ago
https://www.phoronix.com/news/x86-Opcodes-Not-AMD-Or-Intel
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  • #corporate_mystery
  • #x86
  • #hardware
  • A mysterious corporate entity, other than Intel/AMD, is using specific x86 opcodes, CPUID, and MSR ranges.
  • Christian Ludloff, a well-known x86 expert, relayed this information to the Linux kernel and GNU Binutils mailing lists.
  • The opcodes in use include previously unused or historic ones, such as 0Eh in PM64 and others with specific conditions.
  • The corporate entity's legal ability to work on a new x86-based implementation raises questions.
  • Speculation points towards Zhaoxin, but their anonymity and method of communication via Ludloff are unusual.
  • The details of the opcodes and ranges have been documented on Ludloff's site, sandpile.org.
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