[mkc2008] IPC - multiple send flexpages

Jan Bierbaum s3306700 at mail.inf.tu-dresden.de
Sat Apr 4 20:44:40 CEST 2009


In slides 7 and 17 multiple send flexpages are mentioned:

7 -> "Sender specifies one or more Send-flexpage"
17 -> "Copy data (direct and indirect strings) and map flexpages

Does this mean you can actually have multiple flexpage data structures
in one IPC (i.e. a message buffer descriptor), so that non-contiguous
parts of the senders address space can be mapped with a single IPC? How
does this work? Are flexpages inside direct or indirect strings allowed?
What if those flexpages overlap in the receivers address space?

Thanks, Jan.

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