From ec1ef24895de75e8408398492ee8190866650bb5 Mon Sep 17 00:00:00 2001
From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Fri, 9 Mar 2012 09:59:26 -0500
Subject: [PATCH] ARM: Fix valgrind reported error on O3 that was causing minor
 stats changes.

---
 src/arch/arm/linux/atag.hh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/arch/arm/linux/atag.hh b/src/arch/arm/linux/atag.hh
index b7c37dffd..71271dac2 100644
--- a/src/arch/arm/linux/atag.hh
+++ b/src/arch/arm/linux/atag.hh
@@ -156,7 +156,10 @@ class AtagCmdline : public AtagHeader
 
         delete[] storage;
         storage = new uint32_t[size()];
-
+        // Initialize the last byte of memory here beacuse it might be slightly
+        // longer than needed and mis-speculation of the NULL in the O3 CPU can
+        // change stats ever so slightly when that happens.
+        storage[size() - 1] = 0;
         strcpy((char*)&storage[2] , s.c_str());
     }
     AtagCmdline()
-- 
2.30.2