pvmfw: Implement software dirty state handling

Flush only dirty pages when dropping RW memory regions. Implement
handling of dirty bit in software. Mark writable regions read-only
and make the pages writable-dirty when access causes a permission
fault.

Bug: 269738062
Test: atest MicrodroidTestApp

Change-Id: I2e73a7cc867bae8b68c2a3b68d382405327f99e8
5 files changed
tree: 7d6b9e60c17d345f3a9ac75e316da4b91c400e0a
  1. apex/
  2. apkdmverity/
  3. authfs/
  4. compos/
  5. demo/
  6. demo_native/
  7. docs/
  8. encryptedstore/
  9. javalib/
  10. launcher/
  11. libs/
  12. microdroid/
  13. microdroid_manager/
  14. pvmfw/
  15. rialto/
  16. service_vm/
  17. tests/
  18. virtualizationmanager/
  19. virtualizationservice/
  20. vm/
  21. vm_payload/
  22. vmbase/
  23. vmclient/
  24. zipfuse/
  25. .clang-format
  26. .gitignore
  27. Android.bp
  28. OWNERS
  29. PREUPLOAD.cfg
  30. README.md
  31. TEST_MAPPING
README.md

Virtualization

This repository contains userspace services related to running virtual machines on Android, especially protected virtual machines. See the getting started documentation and Microdroid README for more information.