objtool: Add xen_start_kernel() to noreturn list

xen_start_kernel() doesn't return.  Annotate it as such so objtool can
follow the code flow.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/930deafa89256c60b180442df59a1bbae48f30ab.1611263462.git.jpoimboe@redhat.com

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index f88f20327bf25489651fcc472815f0fc67648612..5f056ddab4fa25954b09858912473905e39fc10a 100644 (file)
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -160,6 +160,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func,
                "machine_real_restart",
                "rewind_stack_do_exit",
                "kunit_try_catch_throw",
+               "xen_start_kernel",
        };
 
        if (!func)