[PATCH] x86-64: using cpu_online_map instead of APIC_ALL_CPUS

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

Using cpu_online_map instead of APIC_ALL_CPUS for flat apic mode, So
__assign_irq_vector can refer correct per_cpu data.

Cc: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Yinghai Lu <yinghai.lu@amd.com>

diff --git a/arch/x86_64/kernel/genapic_flat.c b/arch/x86_64/kernel/genapic_flat.c
index 7c01db8..490df69 100644
--- a/arch/x86_64/kernel/genapic_flat.c
+++ b/arch/x86_64/kernel/genapic_flat.c
@@ -32,8 +32,7 @@ static cpumask_t flat_vector_allocation_
 	 * deliver interrupts to the wrong hyperthread when only one
 	 * hyperthread was specified in the interrupt desitination.
 	 */
-	cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
-	return domain;
+	return cpu_online_map;
 }
 
 /*