> There is also the x86 memory ordering extension used by Rosetta 2. That one isn't really a requirement either, and is handled fully in kernel mode. Wkdm and

> There is also the x86 memory ordering extension used by Rosetta 2. That one isn't really a requirement either, and is handled fully in kernel mode. Wkdm and friends are handled fully in kernel mode. APRR? Not a strict requirement for user-mode, JIT regions are just left as RWX without it.