[PATCH V2 13/13] xen: register 3-level event channel

[Wei Liu <wei.liu2@citrix.com>]

3-level event channel is registered in
 a) xen_init_IRQ(), when the guest is fresh started;
 b) xen_vcpu_restore(), when the guest is restored.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 arch/x86/xen/enlighten.c |    3 +++
 drivers/xen/events.c     |    2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index bc893e7..722a994 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -43,6 +43,7 @@
 #include <xen/hvm.h>
 #include <xen/hvc-console.h>
 #include <xen/acpi.h>
+#include <xen/events.h>
 
 #include <asm/paravirt.h>
 #include <asm/apic.h>
@@ -195,6 +196,8 @@ void xen_vcpu_restore(void)
 		    HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
 			BUG();
 	}
+
+	xen_event_channel_register_nlevel(3);
 }
 
 static void __init xen_banner(void)
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 6a0307c..849d049 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -2270,7 +2270,7 @@ void __init xen_init_IRQ(void)
 	int i, rc;
 	int cpu;
 
-	xen_set_event_channel_nlevel(2);
+	xen_event_channel_register_nlevel(3);
 
 	evtchn_to_irq = kcalloc(nr_event_channels, sizeof(*evtchn_to_irq),
 				    GFP_KERNEL);
-- 
1.7.10.4