This header file has the following check at the top:

  #ifndef __ASSEMBLY__
  #warning "asm/dwarf2.h should be only included in pure assembly files"
  #endif

So, we expect defined(__ASSEMBLY__) is always true.
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
Reviewed-by: NJason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: NNick Desaulniers <ndesaulniers@google.com>
Acked-by: NIngo Molnar <mingo@kernel.org>