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x86,objtool: Separate unret validation from unwind hints

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The ENTRY unwind hint type is serving double duty as both an empty
unwind hint and an unret validation annotation.

Unret validation is unrelated to unwinding. Separate it out into its own
annotation.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/ff7448d492ea21b86d8a90264b105fbd0d751077.1677683419.git.jpoimboe@kernel.org
This commit is contained in:
Josh Poimboeuf
2023-03-01 07:13:11 -08:00
committed by Peter Zijlstra
parent f902cfdd46
commit 4708ea14be
9 changed files with 85 additions and 45 deletions
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5
tools/include/linux/objtool_types.h
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@@ -42,8 +42,7 @@ struct unwind_hint {
#define UNWIND_HINT_TYPE_REGS_PARTIAL 2
/* The below hint types don't have corresponding ORC types */
#define UNWIND_HINT_TYPE_FUNC 3
#define UNWIND_HINT_TYPE_ENTRY 4
#define UNWIND_HINT_TYPE_SAVE 5
#define UNWIND_HINT_TYPE_RESTORE 6
#define UNWIND_HINT_TYPE_SAVE 4
#define UNWIND_HINT_TYPE_RESTORE 5
#endif /* _LINUX_OBJTOOL_TYPES_H */