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-rw-r--r--migration/postcopy-ram.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/migration/postcopy-ram.h b/migration/postcopy-ram.h
index fcd53b8295..2c73d77a5c 100644
--- a/migration/postcopy-ram.h
+++ b/migration/postcopy-ram.h
@@ -148,6 +148,10 @@ struct PostCopyFD;
/* ufd is a pointer to the struct uffd_msg *TODO: more Portable! */
typedef int (*pcfdhandler)(struct PostCopyFD *pcfd, void *ufd);
+/* Notification to wake, either on place or on reception of
+ * a fault on something that's already arrived (race)
+ */
+typedef int (*pcfdwake)(struct PostCopyFD *pcfd, RAMBlock *rb, uint64_t offset);
struct PostCopyFD {
int fd;
@@ -155,6 +159,8 @@ struct PostCopyFD {
void *data;
/* Handler to be called whenever we get a poll event */
pcfdhandler handler;
+ /* Notification to wake shared client */
+ pcfdwake waker;
/* A string to use in error messages */
const char *idstr;
};
@@ -164,6 +170,10 @@ struct PostCopyFD {
*/
void postcopy_register_shared_ufd(struct PostCopyFD *pcfd);
void postcopy_unregister_shared_ufd(struct PostCopyFD *pcfd);
+/* Call each of the shared 'waker's registerd telling them of
+ * availability of a block.
+ */
+int postcopy_notify_shared_wake(RAMBlock *rb, uint64_t offset);
/* postcopy_wake_shared: Notify a client ufd that a page is available
*
* Returns 0 on success