8013938: Native OOME on fastdebug VM on Solaris

Reviewed-by: azeemj, brutisso, kvn, tschatzl

src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp

@@ -44,6 +44,6 @@ define_pd_global(uintx,JVMInvokeMethodSlack,     10*K);
 define_pd_global(intx, CompilerThreadStackSize,  0);
 
 // Used on 64 bit platforms for UseCompressedOops base address
-define_pd_global(uintx,HeapBaseMinAddress,       256*M);
+define_pd_global(uintx,HeapBaseMinAddress,       2*G);
 
 #endif // OS_CPU_SOLARIS_X86_VM_GLOBALS_SOLARIS_X86_HPP

src/share/vm/runtime/arguments.cpp

@@ -1605,17 +1605,6 @@ julong Arguments::limit_by_allocatable_memory(julong limit) {
   return result;
 }
 
-void Arguments::set_heap_base_min_address() {
-  if (FLAG_IS_DEFAULT(HeapBaseMinAddress) && UseG1GC && HeapBaseMinAddress < 1*G) {
-    // By default HeapBaseMinAddress is 2G on all platforms except Solaris x86.
-    // G1 currently needs a lot of C-heap, so on Solaris we have to give G1
-    // some extra space for the C-heap compared to other collectors.
-    // Use FLAG_SET_DEFAULT here rather than FLAG_SET_ERGO to make sure that
-    // code that checks for default values work correctly.
-    FLAG_SET_DEFAULT(HeapBaseMinAddress, 1*G);
-  }
-}
-
 void Arguments::set_heap_size() {
   if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) {
     // Deprecated flag
@@ -3537,8 +3526,6 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
     }
   }
 
-  set_heap_base_min_address();
-
   // Set heap size based on available physical memory
   set_heap_size();
 

src/share/vm/runtime/arguments.hpp

@@ -315,8 +315,6 @@ class Arguments : AllStatic {
   // limits the given memory size by the maximum amount of memory this process is
   // currently allowed to allocate or reserve.
   static julong limit_by_allocatable_memory(julong size);
-  // Setup HeapBaseMinAddress
-  static void set_heap_base_min_address();
   // Setup heap size
   static void set_heap_size();
   // Based on automatic selection criteria, should the