[kbuild-all] Re: include/linux/atomic/atomic-arch-fallback.h:60:32: error: implicit declaration of function 'arch_cmpxchg64'; did you mean 'arch_cmpxchg'?

On 9/13/2021 4:57 PM, Mark Rutland wrote: > On Sun, Sep 12, 2021 at 04:24:21AM +0800, kernel test robot wrote: > > Hi Mark, > > > > FYI, the error/warning still remains. > > As pointed out previously [1,2], this is an existing bug (in that arc > does not have an implementation of cmpxchg64(), but it's possible to > select code which uses it in test configurations). My changes to the > core atomic headers only change the way in which the error manifests, > and have nothing to do with the underlying problem. > > I thought we were going to stop reporting this [3]? Hi Mark, Thanks for the feedback, we only ignored the below one: include/linux/atomic-arch-fallback.h:60:32: error: implicit declaration of function 'arch_cmpxchg64'; did you mean 'arch_cmpxchg'? [-Werror=implicit-function-declaration] we'll update the pattern to ignore all.