On 3 June 2014 03:10, Peter Crosthwaite <peter.crosthwa...@xilinx.com> wrote: > This will either create a new AS or return a pointer to an > already existing equivalent one. Both name and root mr must > match. > > The motivation is to reuse address spaces as much as possible. > Its going to be quite common that bus masters out in device land > have pointers to the same memory region for their mastering yet > each will need to create its own address space. Let the memory > API implement sharing for them. > > Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com> > --- > I know this leaks memory. I'll fix that post RFC. I think we need > AS ref counters to do it properly if anyone has any input on how > that should be done. > > We could change the equivalency test only match mr to support device > specific naming of these shared ASes. The singleton AS can ultimately > only have one name however. So perhaps some strcatting each time a new > sharer is added to the share. That or first-in-best-dressed.
Is this here because it looked like it would be really easy to do, or because you tried this series without shared ASes and found it was too inefficient? thanks -- PMM
