Hi, On Thu Oct 31, 2013 at 19:24:32 +0800, ·ëϣ˳ wrote: > I have a question about the snd-base/hot-spot of flexpage mapping feature. > in many l4 documents, there are a lot of words about the snd-base/hot-spot > concept, it seem that are a complex mechanism to calculate the send base > when the sender's flexpage have different size compares to receiver's > flexpage, I have read a lot of documents(l4 user manual/l4 reference manual > etc.) about this mechanism, but I can not figure out it... Could you tell > why l4 needs this mechanism, and what situation that this mechanism adapt > to?
You might want to look at the corresponding lecture slides: http://www.inf.tu-dresden.de/index.php?node_id=1314&ln=en (Memory). Basically with the send-base the sender can specify where to place the mapping in the receiver, for example, when resolving a page-fault the receive window of the faulting thread is the whole address space, so the sender must specify where to put the sent page. > And I have another question to Dresden University guys: what is the l4 > version of Fiasco.OC based? Fiasco.OC defines its own interfaces, i.e. it evolved from previous L4 versions. It probably means it defines its own version. Adam -- Adam [email protected] Lackorzynski http://os.inf.tu-dresden.de/~adam/ _______________________________________________ l4-hackers mailing list [email protected] http://os.inf.tu-dresden.de/mailman/listinfo/l4-hackers
