Re: [Bug 7505] Linux-2.6.18 fails to boot on AMD64 machine

["Yinghai Lu" <yinghai.lu@amd.com>]

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On 12/19/06, Chuck Ebbert <76306.1226@compuserve.com> wrote:
> So an external interrupt occurred, the system tried to use interrupt
> descriptor #39 decimal (irq 7), but the descriptor was invalid.

but the irq is disabled at that time.

can you use attached diff to verify if the irq is enable somehow?

YH

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diff --git a/arch/x86_64/kernel/i8259.c b/arch/x86_64/kernel/i8259.c
index d73c79e..fedde34 100644
--- a/arch/x86_64/kernel/i8259.c
+++ b/arch/x86_64/kernel/i8259.c
@@ -421,7 +421,11 @@ void __init init_ISA_irqs (void)
 {
 	int i;
 
+	if (!irqs_disabled())
+		printk("init_ISA_irqs(): -1  bug: interrupts were enabled early\n");
 	init_bsp_APIC();
+	if (!irqs_disabled())
+		printk("init_ISA_irqs(): -2  bug: interrupts were enabled early\n");
 	init_8259A(0);
 
 	for (i = 0; i < NR_IRQS; i++) {