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2025-05-23selftests: bpf: Add a test for mmapable vmlinux BTFLorenz Bauer
Add a basic test for the ability to mmap /sys/kernel/btf/vmlinux. Ensure that the data is valid BTF and that it is padded with zero. Signed-off-by: Lorenz Bauer <lmb@isovalent.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Alan Maguire <alan.maguire@oracle.com> Link: https://lore.kernel.org/bpf/20250520-vmlinux-mmap-v5-2-e8c941acc414@isovalent.com