src/share/vm/runtime/commandLineFlagConstraintsGC.cpp

*** 604,616 ****
      CommandLineError::print(verbose,
                              "MinTLABSize (" SIZE_FORMAT ") must be "
                              "greater than or equal to reserved area in TLAB (" SIZE_FORMAT ")\n",
                              value, ThreadLocalAllocBuffer::alignment_reserve_in_bytes());
      return Flag::VIOLATES_CONSTRAINT;
-   } else {
-     return Flag::SUCCESS;
    }
  }
  
  Flag::Error TLABSizeConstraintFunc(size_t value, bool verbose) {
    // Skip for default value of zero which means set ergonomically.
    if (FLAG_IS_CMDLINE(TLABSize)) {
--- 604,622 ----
      CommandLineError::print(verbose,
                              "MinTLABSize (" SIZE_FORMAT ") must be "
                              "greater than or equal to reserved area in TLAB (" SIZE_FORMAT ")\n",
                              value, ThreadLocalAllocBuffer::alignment_reserve_in_bytes());
      return Flag::VIOLATES_CONSTRAINT;
    }
+   if (value > (ThreadLocalAllocBuffer::max_size() * HeapWordSize)) {
+     CommandLineError::print(verbose,
+                             "MinTLABSize (" SIZE_FORMAT ") must be "
+                             "less than or equal to ergonomic TLAB maximum (" SIZE_FORMAT ")\n",
+                             value, ThreadLocalAllocBuffer::max_size() * HeapWordSize);
+     return Flag::VIOLATES_CONSTRAINT;
+   }
+   return Flag::SUCCESS;
  }
  
  Flag::Error TLABSizeConstraintFunc(size_t value, bool verbose) {
    // Skip for default value of zero which means set ergonomically.
    if (FLAG_IS_CMDLINE(TLABSize)) {