From: Juan Quintela <quintela@xxxxxxxxxx>
0x80 is RAM_SAVE_FLAG_HOOK, it is in qemu-file now.
Bigger usable flag is 0x200, noticing that.
We can reuse RAM_SAVe_FLAG_FULL.
Reviewed-by: Eric Blake <eblake@xxxxxxxxxx>
Signed-off-by: Juan Quintela <quintela@xxxxxxxxxx>
---
migration/ram.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/migration/ram.c b/migration/ram.c
index 18ac68b181..521912385d 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -67,21 +67,25 @@
/***********************************************************/
/* ram save/restore */
-/* RAM_SAVE_FLAG_ZERO used to be named RAM_SAVE_FLAG_COMPRESS, it
- * worked for pages that where filled with the same char. We switched
+/*
+ * RAM_SAVE_FLAG_ZERO used to be named RAM_SAVE_FLAG_COMPRESS, it
+ * worked for pages that were filled with the same char. We switched
* it to only search for the zero value. And to avoid confusion with
- * RAM_SSAVE_FLAG_COMPRESS_PAGE just rename it.
+ * RAM_SAVE_FLAG_COMPRESS_PAGE just rename it.
*/
-
-#define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
+/*
+ * RAM_SAVE_FLAG_FULL was obsoleted in 2009, it can be reused now
+ */
+#define RAM_SAVE_FLAG_FULL 0x01
#define RAM_SAVE_FLAG_ZERO 0x02
#define RAM_SAVE_FLAG_MEM_SIZE 0x04
#define RAM_SAVE_FLAG_PAGE 0x08
#define RAM_SAVE_FLAG_EOS 0x10
#define RAM_SAVE_FLAG_CONTINUE 0x20
#define RAM_SAVE_FLAG_XBZRLE 0x40
-/* 0x80 is reserved in migration.h start with 0x100 next */
+/* 0x80 is reserved in qemu-file.h for RAM_SAVE_FLAG_HOOK */
#define RAM_SAVE_FLAG_COMPRESS_PAGE 0x100
+/* We can't use any flag that is bigger than 0x200 */
int (*xbzrle_encode_buffer_func)(uint8_t *, uint8_t *, int,
uint8_t *, int) = xbzrle_encode_buffer;
--
2.39.1
