[Qemu-devel] [PATCH 1/4] char: add a post_load callback

[Alon Levy <alevy@redhat.com>]

Signed-off-by: Alon Levy <alevy@redhat.com>
---
 include/char/char.h | 12 ++++++++++++
 qemu-char.c         |  7 +++++++
 2 files changed, 19 insertions(+)

diff --git a/include/char/char.h b/include/char/char.h
index 0326b2a..0fdcaf9 100644
--- a/include/char/char.h
+++ b/include/char/char.h
@@ -70,6 +70,7 @@ struct CharDriverState {
     void (*chr_set_echo)(struct CharDriverState *chr, bool echo);
     void (*chr_guest_open)(struct CharDriverState *chr);
     void (*chr_guest_close)(struct CharDriverState *chr);
+    void (*chr_post_load)(struct CharDriverState *chr, int connected);
     void *opaque;
     int idle_tag;
     char *label;
@@ -144,6 +145,17 @@ void qemu_chr_fe_open(struct CharDriverState *chr);
 void qemu_chr_fe_close(struct CharDriverState *chr);
 
 /**
+ * @qemu_chr_fe_post_load:
+ *
+ * Indicate to backend that a migration has just completed. Must be called when
+ * the vm is in the running state.
+ *
+ * @connected true if frontend is still connected after migration, false
+ * otherwise.
+ */
+void qemu_chr_fe_post_load(struct CharDriverState *chr, int connected);
+
+/**
  * @qemu_chr_fe_printf:
  *
  * Write to a character backend using a printf style interface.
diff --git a/qemu-char.c b/qemu-char.c
index 4e011df..42c911f 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3390,6 +3390,13 @@ void qemu_chr_fe_open(struct CharDriverState *chr)
     }
 }
 
+void qemu_chr_fe_post_load(struct CharDriverState *chr, int connected)
+{
+    if (chr->chr_post_load) {
+        chr->chr_post_load(chr, connected);
+    }
+}
+
 void qemu_chr_fe_close(struct CharDriverState *chr)
 {
     if (chr->chr_guest_close) {
-- 
1.8.1.4