tree f4b9a26c4775b25586a641e33a1159facec0ae6e
parent 29e70dd23f3e2c161719f0d1b99d4f6ec401c0f1
author John Bauman <jbauman@google.com> 1562716601 -0700
committer John Bauman <jbauman@google.com> 1563302149 -0700

Reuse existing PMRs when importing VMO multiple times

dEQP-VK.api.external.memory.zircon_vmo.suballocated.device_only.import_multiple_times
imports a single VMO multiple times, which was causing the per-page pin
limit (VM_PAGE_OBJECT_MAX_PIN_COUNT) to be hit. If we reuse the same PMR
object (which is what the linux dmabuf implementation does) then we only
have to pin it once.

MA-607 #done

Change-Id: I005ed327625222c815d11834bfed4ebd196f6e68