objtool: Add xen_start_kernel() to noreturn list

[ Upstream commit c26acfbbfbc2ae4167e33825793e85e1a53058d8 ]

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
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 5c83f73..ec15cad 100644 (file)
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -156,6 +156,7 @@ 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)