--- a/src/hotspot/os_cpu/linux_x86/copy_linux_x86.inline.hpp	Fri Feb 09 13:09:55 2018 +0100
+++ b/src/hotspot/os_cpu/linux_x86/copy_linux_x86.inline.hpp	Fri Feb 09 08:23:42 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,7 +25,7 @@
 #ifndef OS_CPU_LINUX_X86_VM_COPY_LINUX_X86_INLINE_HPP
 #define OS_CPU_LINUX_X86_VM_COPY_LINUX_X86_INLINE_HPP
 
-static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_conjoint_words(const HeapWord* from, HeapWord* to, size_t count) {
 #ifdef AMD64
   (void)memmove(to, from, count * HeapWordSize);
 #else
@@ -70,7 +70,7 @@
 #endif // AMD64
 }
 
-static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_disjoint_words(const HeapWord* from, HeapWord* to, size_t count) {
 #ifdef AMD64
   switch (count) {
   case 8:  to[7] = from[7];
@@ -108,7 +108,7 @@
 #endif // AMD64
 }
 
-static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_disjoint_words_atomic(const HeapWord* from, HeapWord* to, size_t count) {
 #ifdef AMD64
   switch (count) {
   case 8:  to[7] = from[7];
@@ -132,15 +132,15 @@
 #endif // AMD64
 }
 
-static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_aligned_conjoint_words(const HeapWord* from, HeapWord* to, size_t count) {
   pd_conjoint_words(from, to, count);
 }
 
-static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_aligned_disjoint_words(const HeapWord* from, HeapWord* to, size_t count) {
   pd_disjoint_words(from, to, count);
 }
 
-static void pd_conjoint_bytes(void* from, void* to, size_t count) {
+static void pd_conjoint_bytes(const void* from, void* to, size_t count) {
 #ifdef AMD64
   (void)memmove(to, from, count);
 #else
@@ -219,25 +219,25 @@
 #endif // AMD64
 }
 
-static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) {
+static void pd_conjoint_bytes_atomic(const void* from, void* to, size_t count) {
   pd_conjoint_bytes(from, to, count);
 }
 
-static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) {
+static void pd_conjoint_jshorts_atomic(const jshort* from, jshort* to, size_t count) {
   _Copy_conjoint_jshorts_atomic(from, to, count);
 }
 
-static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) {
+static void pd_conjoint_jints_atomic(const jint* from, jint* to, size_t count) {
 #ifdef AMD64
   _Copy_conjoint_jints_atomic(from, to, count);
 #else
   assert(HeapWordSize == BytesPerInt, "heapwords and jints must be the same size");
   // pd_conjoint_words is word-atomic in this implementation.
-  pd_conjoint_words((HeapWord*)from, (HeapWord*)to, count);
+  pd_conjoint_words((const HeapWord*)from, (HeapWord*)to, count);
 #endif // AMD64
 }
 
-static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) {
+static void pd_conjoint_jlongs_atomic(const jlong* from, jlong* to, size_t count) {
 #ifdef AMD64
   _Copy_conjoint_jlongs_atomic(from, to, count);
 #else
@@ -262,47 +262,47 @@
 #endif // AMD64
 }
 
-static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) {
+static void pd_conjoint_oops_atomic(const oop* from, oop* to, size_t count) {
 #ifdef AMD64
   assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
-  _Copy_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
+  _Copy_conjoint_jlongs_atomic((const jlong*)from, (jlong*)to, count);
 #else
   assert(HeapWordSize == BytesPerOop, "heapwords and oops must be the same size");
   // pd_conjoint_words is word-atomic in this implementation.
-  pd_conjoint_words((HeapWord*)from, (HeapWord*)to, count);
+  pd_conjoint_words((const HeapWord*)from, (HeapWord*)to, count);
 #endif // AMD64
 }
 
-static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_arrayof_conjoint_bytes(const HeapWord* from, HeapWord* to, size_t count) {
   _Copy_arrayof_conjoint_bytes(from, to, count);
 }
 
-static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_arrayof_conjoint_jshorts(const HeapWord* from, HeapWord* to, size_t count) {
   _Copy_arrayof_conjoint_jshorts(from, to, count);
 }
 
-static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_arrayof_conjoint_jints(const HeapWord* from, HeapWord* to, size_t count) {
 #ifdef AMD64
    _Copy_arrayof_conjoint_jints(from, to, count);
 #else
-  pd_conjoint_jints_atomic((jint*)from, (jint*)to, count);
+  pd_conjoint_jints_atomic((const jint*)from, (jint*)to, count);
 #endif // AMD64
 }
 
-static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_arrayof_conjoint_jlongs(const HeapWord* from, HeapWord* to, size_t count) {
 #ifdef AMD64
   _Copy_arrayof_conjoint_jlongs(from, to, count);
 #else
-  pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
+  pd_conjoint_jlongs_atomic((const jlong*)from, (jlong*)to, count);
 #endif // AMD64
 }
 
-static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) {
+static void pd_arrayof_conjoint_oops(const HeapWord* from, HeapWord* to, size_t count) {
 #ifdef AMD64
   assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
   _Copy_arrayof_conjoint_jlongs(from, to, count);
 #else
-  pd_conjoint_oops_atomic((oop*)from, (oop*)to, count);
+  pd_conjoint_oops_atomic((const oop*)from, (oop*)to, count);
 #endif // AMD64
 }