[Qemu-devel] [RFC PATCH 04/16] Header/constant/types fixes for visitors

["Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

Move constants around and add types to allow file structure to move into
visitors.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 arch_init.c                   | 12 ------------
 include/migration/migration.h | 15 +++++++++++++++
 include/migration/vmstate.h   | 20 +++++++++++++++++---
 include/qemu/typedefs.h       |  4 ++--
 4 files changed, 34 insertions(+), 17 deletions(-)

diff --git a/arch_init.c b/arch_init.c
index 60c975d..73b9303 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -110,18 +110,6 @@ static bool mig_throttle_on;
 static int dirty_rate_high_cnt;
 static void check_guest_throttling(void);
 
-/***********************************************************/
-/* ram save/restore */
-
-#define RAM_SAVE_FLAG_FULL     0x01 /* Obsolete, not used anymore */
-#define RAM_SAVE_FLAG_COMPRESS 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 */
-
 static struct defconfig_file {
     const char *filename;
     /* Indicates it is an user config file (disabled by -no-user-config) */
diff --git a/include/migration/migration.h b/include/migration/migration.h
index 3e1e6c7..1987e79 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -165,7 +165,16 @@ void ram_control_load_hook(QEMUFile *f, uint64_t flags);
  * side. This lets before_ram_iterate/after_ram_iterate add
  * transport-specific sections to the RAM migration data.
  */
+/* ram save/restore */
+#define RAM_SAVE_FLAG_FULL     0x01 /* Obsolete, not used anymore */
+#define RAM_SAVE_FLAG_COMPRESS 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
 #define RAM_SAVE_FLAG_HOOK     0x80
+#define RAM_SAVE_FLAG_MASK    0x1ff
 
 #define RAM_SAVE_CONTROL_NOT_SUPP -1000
 #define RAM_SAVE_CONTROL_DELAYED  -2000
@@ -174,4 +183,10 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
                              ram_addr_t offset, size_t size,
                              int *bytes_sent);
 
+typedef struct {
+    uint64_t addr;
+    uint16_t flags;
+    char     idstr[256];
+} ramsecentry_header;
+
 #endif
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index e7e1705..a5e4b0b 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -26,6 +26,7 @@
 #ifndef QEMU_VMSTATE_H
 #define QEMU_VMSTATE_H 1
 
+#include "qemu/typedefs.h"
 #ifndef CONFIG_USER_ONLY
 #include <migration/qemu-file.h>
 #endif
@@ -49,15 +50,27 @@ typedef struct SaveVMHandlers {
      * use data that is local to the migration thread or protected
      * by other locks.
      */
-    int (*save_live_iterate)(QEMUFile *f, void *opaque);
+    int (*save_live_iterate)(Visitor *v, void *opaque);
 
     /* This runs outside the iothread lock!  */
-    int (*save_live_setup)(QEMUFile *f, void *opaque);
-    uint64_t (*save_live_pending)(QEMUFile *f, void *opaque, uint64_t max_size);
+    int (*save_live_setup)(Visitor *v, void *opaque);
+    uint64_t (*save_live_pending)(void *opaque, uint64_t max_size);
 
     LoadStateHandler *load_state;
 } SaveVMHandlers;
 
+/* This is the data used to identify a section as passed
+ * into the section version of the compat sequence visitor
+ * (TODO: Probably want to move the whole name lookup into there
+ *    and keep the section_id wrapped inside the binary visitor)
+ */
+typedef struct SectionHeader {
+    uint32_t section_id;
+    uint32_t instance_id; /* Below only used for full version */
+    uint32_t version_id;
+    char     idstr[256];
+} SectionHeader;
+
 int register_savevm(DeviceState *dev,
                     const char *idstr,
                     int instance_id,
@@ -134,6 +147,7 @@ struct VMStateDescription {
     void (*pre_save)(void *opaque);
     VMStateField *fields;
     const VMStateSubsection *subsections;
+    uint32_t ber_tag;
 };
 
 #ifdef CONFIG_USER_ONLY
diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
index bf8daac..3fea88e 100644
--- a/include/qemu/typedefs.h
+++ b/include/qemu/typedefs.h
@@ -10,8 +10,6 @@ typedef struct QEMUBH QEMUBH;
 
 typedef struct AioContext AioContext;
 
-typedef struct Visitor Visitor;
-
 struct Monitor;
 typedef struct Monitor Monitor;
 typedef struct MigrationParams MigrationParams;
@@ -39,6 +37,7 @@ typedef struct DriveInfo DriveInfo;
 typedef struct DisplayState DisplayState;
 typedef struct DisplayChangeListener DisplayChangeListener;
 typedef struct DisplaySurface DisplaySurface;
+typedef struct Error Error;
 typedef struct PixelFormat PixelFormat;
 typedef struct QemuConsole QemuConsole;
 typedef struct CharDriverState CharDriverState;
@@ -73,5 +72,6 @@ typedef struct SHPCDevice SHPCDevice;
 typedef struct FWCfgState FWCfgState;
 typedef struct PcGuestInfo PcGuestInfo;
 typedef struct Range Range;
+typedef struct Visitor Visitor;
 
 #endif /* QEMU_TYPEDEFS_H */
-- 
1.8.5.3