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[ Upstream commit c8c301abeae58ec756b8fcb2178a632bd3c9e284 ] In order to have objtool warn about code references to !ENDBR instruction, we need an annotation to allow this for non-control-flow instances -- consider text range checks, text patching, or return trampolines etc. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20220308154317.578968224@infradead.org Signed-off-by: Sasha Levin <sashal@kernel.org>