tree e68d215aab7ec2e85da9962a0ea900801afc2b94
parent b9a6326cd374df57bdb06c739e4402c612509929
author Barret Rhoden <brho@cs.berkeley.edu> 1576184428 -0500
committer Barret Rhoden <brho@cs.berkeley.edu> 1583266410 -0500

dma: use per-device dma_arenas for dedicated devices

This commit adds the plumbing for picking a dma_arena for a device,
instead of assuming the default physical pages arena.

Future commits will add the ability to create and set a process's
user_pages arena.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>