From: Peter Zijlstra Date: Fri, 8 Apr 2022 09:45:56 +0000 (+0200) Subject: x86,objtool: Explicitly mark idtentry_body()s tail REACHABLE X-Git-Tag: v5.18-rc5~2^2~10 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d66e9d50ea5cd76b2c4875c758efad665283d7ad;p=thirdparty%2Fkernel%2Flinux.git x86,objtool: Explicitly mark idtentry_body()s tail REACHABLE Objtool can figure out that some \cfunc()s are noreturn and then complains about certain instances having unreachable tails: vmlinux.o: warning: objtool: asm_exc_xen_unknown_trap()+0x16: unreachable instruction Signed-off-by: Peter Zijlstra (Intel) Acked-by: Josh Poimboeuf Link: https://lore.kernel.org/r/20220408094718.441854969@infradead.org --- diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index 4faac48ebec55..73d958522b6a4 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -337,6 +337,9 @@ SYM_CODE_END(ret_from_fork) call \cfunc + /* For some configurations \cfunc ends up being a noreturn. */ + REACHABLE + jmp error_return .endm