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> /**
> * Write back dirty buffers to memory using functional writes.
> *
> * After returning, an object implementing this method should have
> * written all its dirty data back to memory. This method is
> * typically used to prepare a system with caches for
> * checkpointing.
> */
> virtual void memWriteback() {};
>
> /**
> * Invalidate the contents of memory buffers.
> *
> * When the switching to hardware virtualized CPU models, we need
> * to make sure that we don't have any cached state in the system
> * that might become stale when we return. This method is used to
> * flush all such state back to main memory.
> *
> * @warn This does <i>not</i> cause any dirty state to be written
> * back to memory.
> */
> virtual void memInvalidate() {};
>