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Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/kernel/iosapic.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index cfe4654838f..274a5938304 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -748,6 +748,15 @@ skip_numa_setup:
#endif
}
+static inline unsigned char choose_dmode(void)
+{
+#ifdef CONFIG_SMP
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ return IOSAPIC_LOWEST_PRIORITY;
+#endif
+ return IOSAPIC_FIXED;
+}
+
/*
* ACPI can describe IOSAPIC interrupts via static tables and namespace
* methods. This provides an interface to register those interrupts and
@@ -762,6 +771,7 @@ iosapic_register_intr (unsigned int gsi,
unsigned long flags;
struct iosapic_rte_info *rte;
u32 low32;
+ unsigned char dmode;
/*
* If this GSI has already been registered (i.e., it's a
@@ -791,8 +801,8 @@ iosapic_register_intr (unsigned int gsi,
spin_lock(&irq_desc[irq].lock);
dest = get_target_cpu(gsi, irq);
- err = register_intr(gsi, irq, IOSAPIC_LOWEST_PRIORITY,
- polarity, trigger);
+ dmode = choose_dmode();
+ err = register_intr(gsi, irq, dmode, polarity, trigger);
if (err < 0) {
spin_unlock(&irq_desc[irq].lock);
irq = err;
@@ -961,10 +971,12 @@ iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
{
int vector, irq;
unsigned int dest = cpu_physical_id(smp_processor_id());
+ unsigned char dmode;
irq = vector = isa_irq_to_vector(isa_irq);
BUG_ON(bind_irq_vector(irq, vector, CPU_MASK_ALL));
- register_intr(gsi, irq, IOSAPIC_LOWEST_PRIORITY, polarity, trigger);
+ dmode = choose_dmode();
+ register_intr(gsi, irq, dmode, polarity, trigger);
DBG("ISA: IRQ %u -> GSI %u (%s,%s) -> CPU %d (0x%04x) vector %d\n",
isa_irq, gsi, trigger == IOSAPIC_EDGE ? "edge" : "level",