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GrantReply is a new access right added to endpoint capabilities, which allows seL4_Call to be used on those capabilities (specifically, it allows reply caps *only* to be granted across endpoints). Prior to the addition of GrantReply, endpoint capabilities required the Grant access right, which allowed any arbitrary capabilitiy to be transferred over an endpoint. Using GrantReply, systems can now be constructed where threads using seL4_Call over an endpoint do not need to be in the same security subsystem. |
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| fastpath.h | ||