Yes, but it won't be continguous in bus space.
>
> For x86-64, if an entry ends on a 4k alignment and the next one starts
> on a 4k alignment, could those be merged into one DMA segment that uses
> two adjacent mapping entries?
Yes, it is now in the version I wrote last night, but not in the
previous code that's in the tree.
-Andi
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