tree 009750b62161e33bd59fa6c7cc3c610be792d3bb
parent 4d68de70332b1687c2ab1972c1165940d691c790
author Lingfeng Yang <lfy@google.com> 1586916990 -0700
committer Lingfeng Yang <lfy@google.com> 1586919605 -0700

vulkan: always tear down host visible memory blocks properly

in reverse order of how they were set up.

This is accomplished by introducing a new api, vkFreeMemorySyncGOOGLE,
that waits for the host to be done first before returning to the guest,
so that the gpa range is guaranteed to be torn down by the guest
afterwards not before.

Test: Chrome Fuchsia cc_unittests don't flake
Change-Id: Ica42e6197ba34e87cc9e3c2109f0e03cbb7517d9