commit 41af30d7d4afc3194b78f5b0e4081b9020d1ffef
author Lokesh Gidra <lokeshgidra@google.com> Wed Jan 18 18:49:41 2023 +0000
committer Treehugger Robot <treehugger-gerrit@google.com> Thu Jan 19 06:47:13 2023 +0000
tree 272874178b591e2935d62b177d1a402e90de5185
parent 6c2275d43d6e432a610a4a90deac6896c25e3c14

Use userfaultfd in COPY mode even when minor-fault available

Private anonymous is preferred over shmem due to performance as well as
accounting issues with the latter. Therefore use COPY ioctl.

Test: art/test/testrunner/testrunner.py
Bug: 263341475
Change-Id: I673da4fe5897416302ae0cfbecca4a429e55c65f

runtime/gc/collector/mark_compact.cc

diff --git a/runtime/gc/collector/mark_compact.cc b/runtime/gc/collector/mark_compact.cc
index 5251a6d..c9b2ff4 100644
--- a/runtime/gc/collector/mark_compact.cc
+++ b/runtime/gc/collector/mark_compact.cc
@@ -251,7 +251,7 @@
       compaction_in_progress_count_(0),
       compacting_(false),
       uffd_initialized_(false),
-      uffd_minor_fault_supported_(GetUffdAndMinorFault().second),
+      uffd_minor_fault_supported_(false),
       minor_fault_initialized_(false),
       map_linear_alloc_shared_(false) {
   // TODO: Depending on how the bump-pointer space move is implemented. If we