* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+
#ifndef QEMU_VMSTATE_H
-#define QEMU_VMSTATE_H 1
+#define QEMU_VMSTATE_H
#ifndef CONFIG_USER_ONLY
-#include <migration/qemu-file.h>
+#include "migration/qemu-file.h"
#endif
-#include <qjson.h>
+#include "migration/qjson.h"
typedef void SaveStateHandler(QEMUFile *f, void *opaque);
typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
void (*set_params)(const MigrationParams *params, void * opaque);
SaveStateHandler *save_state;
- void (*cancel)(void *opaque);
- int (*save_live_complete)(QEMUFile *f, void *opaque);
+ void (*cleanup)(void *opaque);
+ int (*save_live_complete_postcopy)(QEMUFile *f, void *opaque);
+ int (*save_live_complete_precopy)(QEMUFile *f, void *opaque);
/* This runs both outside and inside the iothread lock. */
bool (*is_active)(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);
-
+ void (*save_live_pending)(QEMUFile *f, void *opaque, uint64_t max_size,
+ uint64_t *non_postcopiable_pending,
+ uint64_t *postcopiable_pending);
LoadStateHandler *load_state;
} SaveVMHandlers;
};
enum VMStateFlags {
+ /* Ignored */
VMS_SINGLE = 0x001,
+
+ /* The struct member at opaque + VMStateField.offset is a pointer
+ * to the actual field (e.g. struct a { uint8_t *b;
+ * }). Dereference the pointer before using it as basis for
+ * further pointer arithmetic (see e.g. VMS_ARRAY). Does not
+ * affect the meaning of VMStateField.num_offset or
+ * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for
+ * those. */
VMS_POINTER = 0x002,
+
+ /* The field is an array of fixed size. VMStateField.num contains
+ * the number of entries in the array. The size of each entry is
+ * given by VMStateField.size and / or opaque +
+ * VMStateField.size_offset; see VMS_VBUFFER and
+ * VMS_MULTIPLY. Each array entry will be processed individually
+ * (VMStateField.info.get()/put() if VMS_STRUCT is not set,
+ * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not
+ * be combined with VMS_VARRAY*. */
VMS_ARRAY = 0x004,
+
+ /* The field is itself a struct, containing one or more
+ * fields. Recurse into VMStateField.vmsd. Most useful in
+ * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each
+ * array entry. */
VMS_STRUCT = 0x008,
- VMS_VARRAY_INT32 = 0x010, /* Array with size in int32_t field*/
- VMS_BUFFER = 0x020, /* static sized buffer */
+
+ /* The field is an array of variable size. The int32_t at opaque +
+ * VMStateField.num_offset contains the number of entries in the
+ * array. See the VMS_ARRAY description regarding array handling
+ * in general. May not be combined with VMS_ARRAY or any other
+ * VMS_VARRAY*. */
+ VMS_VARRAY_INT32 = 0x010,
+
+ /* Ignored */
+ VMS_BUFFER = 0x020,
+
+ /* The field is a (fixed-size or variable-size) array of pointers
+ * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry
+ * before using it. Note: Does not imply any one of VMS_ARRAY /
+ * VMS_VARRAY*; these need to be set explicitly. */
VMS_ARRAY_OF_POINTER = 0x040,
- VMS_VARRAY_UINT16 = 0x080, /* Array with size in uint16_t field */
- VMS_VBUFFER = 0x100, /* Buffer with size in int32_t field */
- VMS_MULTIPLY = 0x200, /* multiply "size" field by field_size */
- VMS_VARRAY_UINT8 = 0x400, /* Array with size in uint8_t field*/
- VMS_VARRAY_UINT32 = 0x800, /* Array with size in uint32_t field*/
- VMS_MUST_EXIST = 0x1000, /* Field must exist in input */
- VMS_ALLOC = 0x2000, /* Alloc a buffer on the destination */
+
+ /* The field is an array of variable size. The uint16_t at opaque
+ * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
+ * contains the number of entries in the array. See the VMS_ARRAY
+ * description regarding array handling in general. May not be
+ * combined with VMS_ARRAY or any other VMS_VARRAY*. */
+ VMS_VARRAY_UINT16 = 0x080,
+
+ /* The size of the individual entries (a single array entry if
+ * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if
+ * neither is set) is variable (i.e. not known at compile-time),
+ * but the same for all entries. Use the int32_t at opaque +
+ * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine
+ * the size of each (and every) entry. */
+ VMS_VBUFFER = 0x100,
+
+ /* Multiply the entry size given by the int32_t at opaque +
+ * VMStateField.size_offset (see VMS_VBUFFER description) with
+ * VMStateField.size to determine the number of bytes to be
+ * allocated. Only valid in combination with VMS_VBUFFER. */
+ VMS_MULTIPLY = 0x200,
+
+ /* The field is an array of variable size. The uint8_t at opaque +
+ * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
+ * contains the number of entries in the array. See the VMS_ARRAY
+ * description regarding array handling in general. May not be
+ * combined with VMS_ARRAY or any other VMS_VARRAY*. */
+ VMS_VARRAY_UINT8 = 0x400,
+
+ /* The field is an array of variable size. The uint32_t at opaque
+ * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
+ * contains the number of entries in the array. See the VMS_ARRAY
+ * description regarding array handling in general. May not be
+ * combined with VMS_ARRAY or any other VMS_VARRAY*. */
+ VMS_VARRAY_UINT32 = 0x800,
+
+ /* Fail loading the serialised VM state if this field is missing
+ * from the input. */
+ VMS_MUST_EXIST = 0x1000,
+
+ /* When loading serialised VM state, allocate memory for the
+ * (entire) field. Only valid in combination with
+ * VMS_POINTER. Note: Not all combinations with other flags are
+ * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't
+ * cause the individual entries to be allocated. */
+ VMS_ALLOC = 0x2000,
+
+ /* Multiply the number of entries given by the integer at opaque +
+ * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num
+ * to determine the number of entries in the array. Only valid in
+ * combination with one of VMS_VARRAY*. */
+ VMS_MULTIPLY_ELEMENTS = 0x4000,
};
+typedef enum {
+ MIG_PRI_DEFAULT = 0,
+ MIG_PRI_MAX,
+} MigrationPriority;
+
typedef struct {
const char *name;
size_t offset;
int version_id;
int minimum_version_id;
int minimum_version_id_old;
+ MigrationPriority priority;
LoadStateHandler *load_state_old;
int (*pre_load)(void *opaque);
int (*post_load)(void *opaque, int version_id);
extern const VMStateInfo vmstate_info_uint64;
extern const VMStateInfo vmstate_info_float64;
+extern const VMStateInfo vmstate_info_cpudouble;
extern const VMStateInfo vmstate_info_timer;
extern const VMStateInfo vmstate_info_buffer;
.offset = vmstate_offset_2darray(_state, _field, _type, _n1, _n2), \
}
+#define VMSTATE_VARRAY_MULTIPLY(_field, _state, _field_num, _multiply, _info, _type) { \
+ .name = (stringify(_field)), \
+ .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
+ .num = (_multiply), \
+ .info = &(_info), \
+ .size = sizeof(_type), \
+ .flags = VMS_VARRAY_UINT32|VMS_MULTIPLY_ELEMENTS, \
+ .offset = offsetof(_state, _field), \
+}
+
#define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
.name = (stringify(_field)), \
.field_exists = (_test), \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
+#define VMSTATE_VARRAY_UINT32_ALLOC(_field, _state, _field_num, _version, _info, _type) {\
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
+ .info = &(_info), \
+ .size = sizeof(_type), \
+ .flags = VMS_VARRAY_UINT32|VMS_POINTER|VMS_ALLOC, \
+ .offset = vmstate_offset_pointer(_state, _field, _type), \
+}
+
#define VMSTATE_VARRAY_UINT16_UNSAFE(_field, _state, _field_num, _version, _info, _type) {\
.name = (stringify(_field)), \
.version_id = (_version), \
.offset = offsetof(_state, _field), \
}
+/* a variable length array (i.e. _type *_field) but we know the
+ * length
+ */
+#define VMSTATE_STRUCT_VARRAY_POINTER_KNOWN(_field, _state, _num, _version, _vmsd, _type) { \
+ .name = (stringify(_field)), \
+ .num = (_num), \
+ .version_id = (_version), \
+ .vmsd = &(_vmsd), \
+ .size = sizeof(_type), \
+ .flags = VMS_STRUCT|VMS_ARRAY|VMS_POINTER, \
+ .offset = offsetof(_state, _field), \
+}
+
#define VMSTATE_STRUCT_VARRAY_POINTER_INT32(_field, _state, _field_num, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = 0, \
#define VMSTATE_UINT64_ARRAY(_f, _s, _n) \
VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0)
+#define VMSTATE_UINT64_2DARRAY(_f, _s, _n1, _n2) \
+ VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, 0)
+
+#define VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, _v) \
+ VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint64, uint64_t)
+
#define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int16, int16_t)
#define VMSTATE_UINT32_SUB_ARRAY(_f, _s, _start, _num) \
VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint32, uint32_t)
-#define VMSTATE_UINT32_ARRAY(_f, _s, _n) \
- VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
-
#define VMSTATE_INT64_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int64, int64_t)
#define VMSTATE_FLOAT64_ARRAY(_f, _s, _n) \
VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, 0)
+#define VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, _v) \
+ VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_cpudouble, CPU_DoubleU)
+
+#define VMSTATE_CPUDOUBLE_ARRAY(_f, _s, _n) \
+ VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, 0)
+
#define VMSTATE_BUFFER_V(_f, _s, _v) \
VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))
#define VMSTATE_PARTIAL_BUFFER(_f, _s, _size) \
VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size)
+#define VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, _v) \
+ VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, _start, sizeof(typeof_field(_s, _f)))
+
#define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \
- VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, _start, sizeof(typeof_field(_s, _f)))
+ VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, 0)
#define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size) \
VMSTATE_VBUFFER(_f, _s, 0, NULL, 0, _size)
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