[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 9561eb3..cc230b9 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -57,10 +57,12 @@
{
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");