Naive question about grant/map
Jonathan S. Shapiro
shap at eros-os.org
Thu Dec 4 20:38:46 CET 2003
I have a note about mappings and address spaces pending, but before I
send it I want to ask a naive question about the map operations:
Consider a sequence of operations in which
A maps to B
B maps same stuff to C.
Is there some variant of the 'map' operation in which B does NOT retain
the ability to revoke C's mapping? That is, in which the resulting
mapping dependency hierarchy is
That is, is there a way for a sender to give a receiver rights on data
that are co-equal in all respects with those of the sender?
If not, is it important?
If such a "coequal map" operation existed, how often would it be used in
contrast to the current map operation?
Jonathan S. Shapiro <shap at eros-os.org>
More information about the l4-hackers