Maciej W. Rozycki <macro@xxxxxxxxxxx> 于2022年4月30日周六 23:38写道: > > Adding a safety check would be a separate improvement. Please feel free > to submit one. > > We need to keep fixes and improvements as separate changes. For one > fixes can be candidates for backporting while improvements are never > backported; cf. Documentation/process/stable-kernel-rules.rst. > > I hope this clears your concerns. Let me know if you have further > questions. > > Maciej Thanks for your elaboration.It helps a lot. I want to submit a v3 patch like: #if cpu_has_fpu # error "Forcing `cpu_has_fpu' to non-zero is not supported" #endif but this will cause the link error if not combined with the fix: MIPS: IP30: Remove incorrect `cpu_has_fpu' override Maybe I should submit one first, and see how it goes then.