8152176: Big ParGCCardsPerStrideChunk values can cause overflow for CMS GC

Limit the max value of ParGCCardsPerStrideChunk based on card table size and other stride flags Reviewed-by: jmasa, tbenson
2025-08-28 07:14:30 +02:00 · 2016-04-01 09:43:13 -07:00 · 2016-04-01 09:43:13 -07:00 · a868617af7
commit a868617af7
parent c3469071aa
4 changed files with 44 additions and 9 deletions
--- a/hotspot/src/share/vm/runtime/globals.hpp
+++ b/hotspot/src/share/vm/runtime/globals.hpp
@ -1629,6 +1629,7 @@ public:
          "The number of cards in each chunk of the parallel chunks used "  \
          "during card table scanning")                                     \
          range(1, max_intx)                                                \
+          constraint(ParGCCardsPerStrideChunkConstraintFunc,AfterMemoryInit)\
                                                                            \
  product(uintx, OldPLABWeight, 50,                                         \
          "Percentage (0-100) used to weight the current sample when "      \