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If private stack is used by any subprog, set that subprog prog->aux->jits_use_priv_stack to be true so later jit can allocate private stack for that subprog properly. Also set env->prog->aux->jits_use_priv_stack to be true if any subprog uses private stack. This is a use case for a single main prog (no subprogs) to use private stack, and also a use case for later struct-ops progs where env->prog->aux->jits_use_priv_stack will enable recursion check if any subprog uses private stack. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20241112163912.2224007-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>