fn panic_prevent_reenter()Expand description
Stop immediately if called a second time.
ยงNote
Using atomics here relieves us from needing to use unsafe for the static variable.
On AArch64, which is the only implemented architechture at the time of writing this
AtomicBool::load and AtomicBool::store are lowered to ordinary load and store
instructions. They are therefore safe to use even with MMU + caching deactivated.