Can't believe Intel announced Icelake before correcting the spelling of Cannonlake [sic].
I assume this is a manual for writing a kernel, not application code, then?
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Sure, now everyone who needs this information just needs to persuade their kernel maintainers to add this test and vend a "feature bit".
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I'm sure they'll get right on it.
End of conversation
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no, this is app code
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The optimization guides are purely for user-mode code; kernel stuff is in the "System Programming Guide" (Vol 3) of the arch manuals.
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I was pointing out how idiotic it is in a context where you can't prevent asynchronous interruption.
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That's why you run each test three times, and cross your fingers and toes.
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So idiotic, but this is what their likely target audience, gamedev, is used to I guess...
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That, or single-app boxes that control scheduling with 1 thread/core and perhaps high/realtime priority.
End of conversation
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