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Eric Biggers' reply downthread is enlightening: https://lore.kernel.org/lkml/Yw0Ah5m%2F2HDDvCjS@gmail.com/ https://lore.kernel.org/lkml/Yw0Ah5m%2F2HDDvCjS@gmail
by caf 4y ago
Eric Biggers' reply downthread is enlightening: https://lore.kernel.org/lkml/Yw0Ah5m%2F2HDDvCjS@gmail.com/ https://lore.kernel.org/lkml/Yw0Ah5m%2F2HDDvCjS@gmail.com/
(Among other things, "Note that Intel's documentation says that CPUs before Ice Lake behave as if DOITM is always set")
- nixgeek 4y agoBut what I think that also means is Intel shipped Ice Lake some time ago and this is now a “Surprise!” moment. Behavior changes like this deserve much more fanfare and, where necessary, development activity to take place in the kernel and related layers, ideally before commercial availability and relatively widespread adoption occurs. Also interesting was Catalin’s comment on ARM: https://lore.kernel.org/lkml/YyNmQ2bPvf3B3Xvo@arm.com/ https://lore.kernel.org/lkml/YyNmQ2bPvf3B3Xvo@arm.com/