there is still some mysterious problem involving a race condition
of the raw hardware console UART Rx path deciding it doesn't want
to report new characters anymore to the interrupt handler that
is triggered when multi-byte sequences are shoved down the
pipe. So long as you're typing simple commands it's fine, but
escape sequences tend to lock things up. I don't think there's
enough ROI to continue investigating this facility.
Mark the private fields in a `MemoryRange` struct as being private. This
allows us to perform operations on the memory range armed with the
knowledge that the entire range is valid and unaliased.
Signed-off-by: Sean Cross <sean@xobs.io>
