From: Yinghai Lu <yinghai.lu@amd.com>
Date: Thu, 7 Dec 2006 01:14:12 +0000 (+0100)
Subject: [PATCH] x86_64: clear_bss before set_intr_gate with early_idt_handler
X-Git-Tag: v2.6.20-rc1~145^2^2~8^2~33
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=3df0af0eb064a16bbdbe81b46bc72a4089f88d54;p=linux-2.6-omap-h63xx.git

[PATCH] x86_64: clear_bss before set_intr_gate with early_idt_handler

idt_table is in the .bss section, so clear_bss need to called at first

Signed-off-by: Yinghai Lu <yinghai.lu@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
---

diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index 9561eb3c5b5..cc230b93cd1 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -57,10 +57,12 @@ void __init x86_64_start_kernel(char * real_mode_data)
 {
 	int i;
 
-	for (i = 0; i < 256; i++)
+	/* clear bss before set_intr_gate with early_idt_handler */
+	clear_bss();
+
+	for (i = 0; i < IDT_ENTRIES; i++)
 		set_intr_gate(i, early_idt_handler);
 	asm volatile("lidt %0" :: "m" (idt_descr));
-	clear_bss();
 
 	early_printk("Kernel alive\n");