48ce3ed052
Add this_cpu_has() to query an X86_FEATURE_* via cpuid(), i.e. to query a feature from L1 (or L2) guest code. Arbitrarily select the AMX test to be the first user. Signed-off-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/20220614200707.3315957-33-seanjc@google.com