as always, we can count on tsialex for a measured and appropriate response.
i have been saying for some time this POS is going to have problems with memory mapping.
essentially the whole purpose of these "PCIe slots" is so Tim Cook can say "hahahaha, i proved you wrong, i did it!!"
but really, after when we learn about, in marcan's words, how "special" these slots are (just like a certain bus, no offense to its occupants whom i love both dearly and unconditionally), it's going to be a laugh.
DMA is a nightmare with ARM, PERIOD.
no one is going to write anything for this car crash disappo--actually wait, i am sure there will be "developers" writing half-baked drivers for the professional audio industry (as they always do) so they, too, can extract thousands of dollars per bagholder.
i can't wait to see how badly this ends for the entire APPUL desktop segment in a few years. all to keep the margins high and pump the stock. that's just a fact.
the AR goggle thread is like a support group. the first post was hilarious ("biggest moment since 2007"). that's when you know you're holding big bags.
bags so big you can pogo
but yes, if memory mapping is problematic, there will be some performance penalties to workaround it. 
