linux-kernel - [PATCH 5/7] x86: memtest: add additional (silly) test patterns

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Message-ID: <20090213145735.GE13000@alberich.amd.com>
Date:	Fri, 13 Feb 2009 15:57:35 +0100
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	linux-kernel@...r.kernel.org
Subject: [PATCH 5/7] x86: memtest: add additional (silly) test patterns


Signed-off-by: Andreas Herrmann <andreas.herrmann3@....com>
---
 arch/x86/mm/memtest.c |   22 ++++++++++++++++------
 1 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/arch/x86/mm/memtest.c b/arch/x86/mm/memtest.c
index 54c143b..e3e986d 100644
--- a/arch/x86/mm/memtest.c
+++ b/arch/x86/mm/memtest.c
@@ -9,15 +9,25 @@
 
 #include <asm/e820.h>
 
+#ifdef CONFIG_X86_64
+#define _regular_pattern(p) 0x##p##p##p##p##p##p##p##p##UL
+#else
+#define _regular_pattern(p) 0x##p##p##p##p##UL
+#endif
+
 static unsigned long patterns[] = {
-	0UL,
-	-1UL,
+	_regular_pattern(00),_regular_pattern(ff),
+	_regular_pattern(55),_regular_pattern(aa),
+	_regular_pattern(11),_regular_pattern(22),
+	_regular_pattern(44),_regular_pattern(88),
+	_regular_pattern(33),_regular_pattern(66),
+	_regular_pattern(99),_regular_pattern(cc),
+	_regular_pattern(77),_regular_pattern(bb),
+	_regular_pattern(dd),_regular_pattern(ee),
 #ifdef CONFIG_X86_64
-	0x5555555555555555UL,
-	0xaaaaaaaaaaaaaaaaUL,
+	0x7a6c7258554e494cUL, /* 64-bit only ;-) */
 #else
-	0x55555555UL,
-	0xaaaaaaaaUL,
+	0xefbeadde,
 #endif
 };
 
-- 
1.6.1.2



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