objtool: Set insn->func for alternatives

In preparation of function attributes, we need each instruction to
have a valid link back to its function.

Therefore make sure we set the function association for alternative
instruction sequences; they are, after all, still part of the function.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 110ea3d84772..950d0f62d22b 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -695,6 +695,7 @@ static int handle_group_alt(struct objtool_file *file,
                 last_new_insn = insn;
 
                 insn->ignore = orig_insn->ignore_alts;
+                insn->func = orig_insn->func;
 
                 if (insn->type != INSN_JUMP_CONDITIONAL &&
                     insn->type != INSN_JUMP_UNCONDITIONAL)