src/cpu/sparc/vm/vm_version_sparc.cpp

*** 110,124 ****
        if (AllocatePrefetchStyle != 3 && FLAG_IS_DEFAULT(AllocatePrefetchDistance)) {
          // Use different prefetch distance without BIS
          FLAG_SET_DEFAULT(AllocatePrefetchDistance, 256);
        }
        if (AllocatePrefetchInstr == 1) {
!         // Need a space at the end of TLAB for BIS since it
!         // will fault when accessing memory outside of heap.
  
          // +1 for rounding up to next cache line, +1 to be safe
!         int lines = AllocatePrefetchLines + 2;
          int step_size = AllocatePrefetchStepSize;
          int distance = AllocatePrefetchDistance;
          _reserve_for_allocation_prefetch = (distance + step_size*lines)/(int)HeapWordSize;
        }
      }
--- 110,127 ----
        if (AllocatePrefetchStyle != 3 && FLAG_IS_DEFAULT(AllocatePrefetchDistance)) {
          // Use different prefetch distance without BIS
          FLAG_SET_DEFAULT(AllocatePrefetchDistance, 256);
        }
        if (AllocatePrefetchInstr == 1) {
!         // Need extra space at the end of TLAB for BIS, otherwise prefetching
!         // instructions will fault (due to accessing memory outside of heap).
!         // The amount of space is the max of the number of lines to
!         // prefetch for array and for instance allocations. (Extra space must be
!         // reserved to accomodate both types of allocations.)
  
          // +1 for rounding up to next cache line, +1 to be safe
!         int lines = MAX2(AllocatePrefetchLines, AllocateInstancePrefetchLines) + 2;
          int step_size = AllocatePrefetchStepSize;
          int distance = AllocatePrefetchDistance;
          _reserve_for_allocation_prefetch = (distance + step_size*lines)/(int)HeapWordSize;
        }
      }