src/hotspot/share/memory/virtualspace.cpp

@@ -527,10 +527,14 @@
      }
  
      // zerobased: Attempt to allocate in the lower 32G.
      // But leave room for the compressed class pointers, which is allocated above
      // the heap.
+     // Note Lilliput: the advantages of this strategy were questionable before
+     //  (since CDS=off + Compressed oops + heap large enough to suffocate us out of lower 32g
+     //  is rare) and with Lilliput the encoding range drastically shrank. We may just do away
+     //  with this altogether.
      char *zerobased_max = (char *)OopEncodingHeapMax;
      const size_t class_space = align_up(CompressedClassSpaceSize, alignment);
      // For small heaps, save some space for compressed class pointer
      // space so it can be decoded with no base.
      if (UseCompressedClassPointers && !UseSharedSpaces &&