From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Sat, 21 Oct 2006 16:37:02 +0000 (+0200)
Subject: [PATCH] i386: Fix fake return address
X-Git-Tag: v2.6.19-rc3~15^2~8
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26fd5e084e470dbe8edc6f726fc918e89b9f988c;p=linux-2.6

[PATCH] i386: Fix fake return address

The fake return address was being set to __KERNEL_PDA, rather than 0.
Push it earlier while %eax still equals 0.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Andrew Morton <akpm@osdl.org>
---

diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S
index be9d883c62..ca31f18d27 100644
--- a/arch/i386/kernel/head.S
+++ b/arch/i386/kernel/head.S
@@ -317,7 +317,7 @@ is386:	movl $2,%ecx		# set MP
 	movl %eax,%gs
 	lldt %ax
 	cld			# gcc2 wants the direction flag cleared at all times
-	pushl %eax		# fake return address
+	pushl $0		# fake return address for unwinder
 #ifdef CONFIG_SMP
 	movb ready, %cl
 	movb $1, ready