[Qemu-devel] [PATCH 4/8] xics: add pre_load() hook to ICSStateClass

[Alexey Kardashevskiy <aik@ozlabs.ru>]

This adds a hook which will be used to reset ICS state before incoming
migration.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 hw/intc/xics.c        | 13 +++++++++++++
 include/hw/ppc/xics.h |  1 +
 2 files changed, 14 insertions(+)

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 88ef9ef..39c33bc 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -550,6 +550,18 @@ static void ics_dispatch_pre_save(void *opaque)
     }
 }
 
+static int ics_dispatch_pre_load(void *opaque)
+{
+    ICSState *ics = opaque;
+    ICSStateClass *info = ICS_GET_CLASS(ics);
+
+    if (info->pre_load) {
+        return info->pre_load(ics);
+    }
+
+    return 0;
+}
+
 static int ics_dispatch_post_load(void *opaque, int version_id)
 {
     ICSState *ics = opaque;
@@ -582,6 +594,7 @@ static const VMStateDescription vmstate_ics = {
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
     .pre_save = ics_dispatch_pre_save,
+    .pre_load = ics_dispatch_pre_load,
     .post_load = ics_dispatch_post_load,
     .fields      = (VMStateField []) {
         /* Sanity check */
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 02bbe31..4b30e9a 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -126,6 +126,7 @@ struct ICSStateClass {
     DeviceClass parent_class;
 
     void (*pre_save)(ICSState *s);
+    int (*pre_load)(ICSState *s);
     int (*post_load)(ICSState *s, int version_id);
 };
 
-- 
1.8.4.rc4