xen: fix ARM build after 6efa20e4

The following commit:

commit 6efa20e49b9cb1db1ab66870cc37323474a75a13
Author: Konrad Rzeszutek Wilk <konrad@kernel.org>
Date:   Fri Jul 19 11:51:31 2013 -0400

    xen: Support 64-bit PV guest receiving NMIs

breaks the Xen ARM build:

CC      drivers/xen/events.o
drivers/xen/events.c: In function 'xen_send_IPI_one':
drivers/xen/events.c:1218:6: error: 'XEN_NMI_VECTOR' undeclared (first use in this function)

Simply ifdef the undeclared symbol in the code.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 0b14a9bbbb0a..090a3b71338d 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -1215,12 +1215,14 @@ void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector)
 {
         int irq;
 
+#ifdef CONFIG_X86
         if (unlikely(vector == XEN_NMI_VECTOR)) {
                 int rc =  HYPERVISOR_vcpu_op(VCPUOP_send_nmi, cpu, NULL);
                 if (rc < 0)
                         printk(KERN_WARNING "Sending nmi to CPU%d failed (rc:%d)\n", cpu, rc);
                 return;
         }
+#endif
         irq = per_cpu(ipi_to_irq, cpu)[vector];
         BUG_ON(irq < 0);
         notify_remote_via_irq(irq);