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lguest: fix irq vectors.

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do_IRQ: cannot handle IRQ -1 vector 0x20 cpu 0
	------------[ cut here ]------------
	kernel BUG at arch/x86/kernel/irq_32.c:219!

We're not ISA: we have a 1:1 mapping from vectors to irqs.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2008-10-31 11:24:27 -05:00
parent ad5173ff8a
commit 526e5ab200
1 changed files with 3 additions and 0 deletions
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3
arch/x86/lguest/boot.c
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@ -586,6 +586,9 @@ static void __init lguest_init_IRQ(void)
for (i = 0; i < LGUEST_IRQS; i++) { for (i = 0; i < LGUEST_IRQS; i++) {
int vector = FIRST_EXTERNAL_VECTOR + i; int vector = FIRST_EXTERNAL_VECTOR + i;
/* Some systems map "vectors" to interrupts weirdly. Lguest has
* a straightforward 1 to 1 mapping, so force that here. */
__get_cpu_var(vector_irq)[vector] = i;
if (vector != SYSCALL_VECTOR) { if (vector != SYSCALL_VECTOR) {
set_intr_gate(vector, interrupt[vector]); set_intr_gate(vector, interrupt[vector]);
set_irq_chip_and_handler_name(i, &lguest_irq_controller, set_irq_chip_and_handler_name(i, &lguest_irq_controller,