From c9d32674eaa2602184c2719dde15ac3fbebf41b7 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sun, 9 Aug 2020 19:17:04 +0200
Subject: [PATCH] Add memory barrier to the blas_lock implementation for Linux

as recommended by cparrott73 in #2760
---
 common_power.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common_power.h b/common_power.h
index aa19794b5..e0685f760 100644
--- a/common_power.h
+++ b/common_power.h
@@ -105,6 +105,7 @@ static void INLINE blas_lock(volatile unsigned long *address){
 	   "	bne- 1f\n"
 	   "	stwcx. %2,0, %1\n"
 	   "	bne- 0b\n"
+	   "    isync\n"
 	   "1:    "
 	: "=&r"(ret)
 	: "r"(address), "r" (val)