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 m

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.)