--- old/src/hotspot/os_cpu/linux_arm/prefetch_linux_arm.inline.hpp	2018-09-17 10:31:01.625211024 -0400
+++ new/src/hotspot/os_cpu/linux_arm/prefetch_linux_arm.inline.hpp	2018-09-17 10:31:00.972172881 -0400
@@ -28,21 +28,13 @@
 #include "runtime/prefetch.hpp"
 
 inline void Prefetch::read (void *loc, intx interval) {
-#ifdef AARCH64
-  __asm__ volatile ("prfm PLDL1KEEP, [%0]" : : "r" (loc));
-#else
 #if defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_5TE__)
   __asm__ volatile ("pld [%0]" : : "r" (loc));
 #endif
-#endif // AARCH64
 }
 
 inline void Prefetch::write(void *loc, intx interval) {
-#ifdef AARCH64
-  __asm__ volatile ("prfm PSTL1KEEP, [%0]" : : "r" (loc));
-#else
   // Not available on 32-bit ARM (prior to ARMv7 with MP extensions)
-#endif // AARCH64
 }
 
 #endif // OS_CPU_LINUX_ARM_VM_PREFETCH_LINUX_ARM_INLINE_HPP