pvmfw: Improve memory sharing with the host am: fefc375083

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/23110879

Change-Id: I796f8c7b05851e2945ec8e055d16029715f143f1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>