diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 27277d6bbfa5..59de416c61a3 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -359,7 +359,8 @@ static int __init xen_guest_init(void)
 	 * for secondary CPUs as they are brought up.
 	 * For uniformity we use VCPUOP_register_vcpu_info even on cpu0.
 	 */
-	xen_vcpu_info = alloc_percpu(struct vcpu_info);
+	xen_vcpu_info = __alloc_percpu(sizeof(struct vcpu_info),
+				       1 << fls(sizeof(struct vcpu_info) - 1));
 	if (xen_vcpu_info == NULL)
 		return -ENOMEM;