FUTEX2 System Call Updated To Work On ARM

While Linux 5.15 has many new features and improvements, one of the patch series we have been eager to see land is the work introducing the new FUTEX2 system call. FUTEX2 can help improve the performance of newer Windows games running on Linux via Wine / Steam Play's Proton by better matching the Windows kernel behavior, but while it didn't land for Linux 5.15, at least a new version of the patches were posted...