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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) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20220408094718.441854969@infradead.org