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A comment on Nvidia to Acquire Arm for $40B. Parent comment

Re:Nvidia to Acquire Arm for $40B by rrss on Monday September 14, 2020 @12:47PM (#24472268)
Are the AMX instructions available in EL0?

Is it possible AMX is implemented with the implementation-defined system registers and aliases of SYS/SYSL in the encoding space reserved for implementation-defined system instructions? Do you have the encodings for the AMX instructions?

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Re:Nvidia to Acquire Arm for $40B by my123 on Monday September 14, 2020 @01:21PM (#24472649)
AMX instructions are available in EL0 yes, and are used by CoreML and Accelerate.framework.

A sample instruction: 20 12 20 00... which doesn't in any stretch parse as a valid arm64 instruction in the Arm specification.

Edit: Some other AMX combinations off-hand:

00 10 20 00

21 12 20 00

20 12 20 00

40 10 20 00

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Re:Nvidia to Acquire Arm for $40B by rrss on Monday September 14, 2020 @01:26PM (#24472710)
very interesting, thanks!
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