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charset=utf-8 Content-Transfer-Encoding: quoted-printable Thomas Wei=C3=9Fschuh writes: > I don't think we would get such an error currently. > The cc-option check in the Makefile will fall back to non-zacas for the > compat vDSO, but arch_futex_robust_unlock_get_pop() will treat it as zaca= s. Switching to .option and the cc-option will be gone. See below. > Ok. I don't understand the .option suggestion :-) We wouldn't touch -march compile option in Makefiles. Instead, we do .option push .option arch, .option pop Whenever the ZACAS instruction is used. See https://lore.kernel.org/lkml/20260717-riscv-no-zacas-zabha-in-march-v1-1-82= b5b0799fb6@iscas.ac.cn/ Nam