src/os_cpu/linux_ppc/vm/os_linux_ppc.cpp

rev 12283 : 8169373: Work around linux NPTL stack guard error.
Summary: Also streamline OS guard page handling on linuxs390, linuxppc, aixppc.

@@ -533,11 +533,13 @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Posix::_compiler_thread_min_stack_allowed = 128 * K;
+// These sizes exclude OS stack guard pages, but include
+// the VM guard pages.
+size_t os::Posix::_compiler_thread_min_stack_allowed = 192 * K;
 size_t os::Posix::_java_thread_min_stack_allowed = 128 * K;
 size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K;
 
 // return default stack size for thr_type
 size_t os::Posix::default_stack_size(os::ThreadType thr_type) {

@@ -545,11 +547,13 @@
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1024 * K);
   return s;
 }
 
 size_t os::Linux::default_guard_size(os::ThreadType thr_type) {
-  return 2 * page_size();
+  // Creating guard page is very expensive. Java thread has HotSpot
+  // guard page, only enable glibc guard page for non-Java threads.
+  return (thr_type == java_thread ? 0 : page_size());
 }
 
 // Java thread:
 //
 //   Low memory addresses