From 526e5ab200ce483dcdf146806f4936bd58daa800 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 31 Oct 2008 11:24:27 -0500 Subject: [PATCH] lguest: fix irq vectors. 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 --- arch/x86/lguest/boot.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c index 4e22fa08d62..a5d8e1ace1c 100644 --- a/arch/x86/lguest/boot.c +++ b/arch/x86/lguest/boot.c @@ -586,6 +586,9 @@ static void __init lguest_init_IRQ(void) for (i = 0; i < LGUEST_IRQS; 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) { set_intr_gate(vector, interrupt[vector]); set_irq_chip_and_handler_name(i, &lguest_irq_controller, -- 2.41.1