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If the arch, like s390x, does not support percpu insn, these cases won't test global percpu data by checking FEAT_PERCPU_DATA support. The following APIs have been tested for global percpu data: 1. bpf_map__set_initial_value() 2. bpf_map__initial_value() 3. bpf_map__set_value_size() 4. generated percpu struct pointer pointing to internal map's mmaped data 5. bpf_map__lookup_elem() for global percpu data map 6. bpf_map_lookup_elem_flags() for global percpu data map At the same time, the case is also tested with 'bpftool gen skeleton -L'. Assisted-by: Codex:gpt-5.5-xhigh Signed-off-by: Leon Hwang <leon.hwang@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20260813152324.97937-8-leon.hwang@linux.dev