We have to disable interrupts before capturing the current Processor*,
or we risk storing the wrong one if we get preempted and resume on a
different CPU.
Caught by the VERIFY in RecursiveSpinLock::unlock()
Leave interrupts enabled so that we can still process IRQs. Critical
sections should only prevent preemption by another thread.
Co-authored-by: Tom <tomut@yahoo.com>
By making these functions static we close a window where we could get
preempted after calling Processor::current() and move to another
processor.
Co-authored-by: Tom <tomut@yahoo.com>
