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On powerpc, immediate load instructions are sign extended. In case of unsigned types, arguments should be explicitly zero-extended by the caller. For kfunc call, this needs to be handled in the JIT code. In bpf_kfunc_call_test4(), that tests for sign-extension of signed argument types in kfunc calls, add some additional failure checks. And add bpf_kfunc_call_test5() to test zero-extension of unsigned argument types in kfunc calls. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20260312080113.843408-1-hbathini@linux.ibm.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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