From ed3ffaf7b5e0262cb860f106a6632933671cc88f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
Date: Wed, 28 Sep 2005 21:48:25 -0700
Subject: [PATCH] [SPARC64]: Solidify check in cheetah_check_main_memory().

Need to make sure the address is below high_memory before
passing it to kern_addr_valid().

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc64/kernel/traps.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index eeb1e835c423..7f190fc57545 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -1333,6 +1333,9 @@ static int cheetah_check_main_memory(unsigned long paddr)
 {
 	unsigned long vaddr = PAGE_OFFSET + paddr;
 
+	if (vaddr > high_memory)
+		return 0;
+
 	return kern_addr_valid(vaddr);
 }