6 ms·

Just curious: if someone was inclined to build a set of good (correct style, well-documented, etc) patches to support those extensions, why would the kernel ref

• marcan_42 5y ago
  It's a bit of both. It basically boils down to it being an invasive change to core kernel code that doesn't have demonstrable benefit to users, and is specific to one platform. If we can point at a specific application and say "look, this speeds up 300% with AMX" then that might help convince people, but there would definitely be quite some political discussion, not in the least because what Apple did is a violation of the architecture. I'm hoping we can at least push through a prctl to turn on TSO mode for x86 emulation. I think that one will be simple enough and have enough benefits to convince people.
• amluto 5y ago
  Getting proper AMX support on _x86_ Linux merged is nasty because of state size issues. I know nothing about ARM64 extended state, but some of the same issues may exist. (The x86 xstate design is horrible. I doubt that ARM64 is anywhere near as bad.)