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qemu/include/migration/vmstate.h
David Hildenbrand 0fd7616e0f vfio: Support for RamDiscardManager in the vIOMMU case 
vIOMMU support works already with RamDiscardManager as long as guests only
map populated memory. Both, populated and discarded memory is mapped
into &address_space_memory, where vfio_get_xlat_addr() will find that
memory, to create the vfio mapping.

Sane guests will never map discarded memory (e.g., unplugged memory
blocks in virtio-mem) into an IOMMU - or keep it mapped into an IOMMU while
memory is getting discarded. However, there are two cases where a malicious
guests could trigger pinning of more memory than intended.

One case is easy to handle: the guest trying to map discarded memory
into an IOMMU.

The other case is harder to handle: the guest keeping memory mapped in
the IOMMU while it is getting discarded. We would have to walk over all
mappings when discarding memory and identify if any mapping would be a
violation. Let's keep it simple for now and print a warning, indicating
that setting RLIMIT_MEMLOCK can mitigate such attacks.

We have to take care of incoming migration: at the point the
IOMMUs get restored and start creating mappings in vfio, RamDiscardManager
implementations might not be back up and running yet: let's add runstate
priorities to enforce the order when restoring.

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Auger Eric <eric.auger@redhat.com>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: teawater <teawaterz@linux.alibaba.com>
Cc: Marek Kedzierski <mkedzier@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210413095531.25603-10-david@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2021-07-08 15:54:45 -04:00

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/*
* QEMU migration/snapshot declarations
*
* Copyright (c) 2009-2011 Red Hat, Inc.
*
* Original author: Juan Quintela <quintela@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* 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
#include "hw/vmstate-if.h"
typedef struct VMStateInfo VMStateInfo;
typedef struct VMStateField VMStateField;
/* VMStateInfo allows customized migration of objects that don't fit in
* any category in VMStateFlags. Additional information is always passed
* into get and put in terms of field and vmdesc parameters. However
* these two parameters should only be used in cases when customized
* handling is needed, such as QTAILQ. For primitive data types such as
* integer, field and vmdesc parameters should be ignored inside get/put.
*/
struct VMStateInfo {
const char *name;
int (*get)(QEMUFile *f, void *pv, size_t size, const VMStateField *field);
int (*put)(QEMUFile *f, void *pv, size_t size, const VMStateField *field,
JSONWriter *vmdesc);
};
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,
/* 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,
/* 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,
/* A structure field that is like VMS_STRUCT, but uses
* VMStateField.struct_version_id to tell which version of the
* structure we are referencing to use. */
VMS_VSTRUCT = 0x8000,
};
typedef enum {
MIG_PRI_DEFAULT = 0,
MIG_PRI_IOMMU, /* Must happen before PCI devices */
MIG_PRI_PCI_BUS, /* Must happen before IOMMU */
MIG_PRI_VIRTIO_MEM, /* Must happen before IOMMU */
MIG_PRI_GICV3_ITS, /* Must happen before PCI devices */
MIG_PRI_GICV3, /* Must happen before the ITS */
MIG_PRI_MAX,
} MigrationPriority;
struct VMStateField {
const char *name;
const char *err_hint;
size_t offset;
size_t size;
size_t start;
int num;
size_t num_offset;
size_t size_offset;
const VMStateInfo *info;
enum VMStateFlags flags;
const VMStateDescription *vmsd;
int version_id;
int struct_version_id;
bool (*field_exists)(void *opaque, int version_id);
};
struct VMStateDescription {
const char *name;
int unmigratable;
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);
int (*pre_save)(void *opaque);
int (*post_save)(void *opaque);
bool (*needed)(void *opaque);
bool (*dev_unplug_pending)(void *opaque);
const VMStateField *fields;
const VMStateDescription **subsections;
};
extern const VMStateInfo vmstate_info_bool;
extern const VMStateInfo vmstate_info_int8;
extern const VMStateInfo vmstate_info_int16;
extern const VMStateInfo vmstate_info_int32;
extern const VMStateInfo vmstate_info_int64;
extern const VMStateInfo vmstate_info_uint8_equal;
extern const VMStateInfo vmstate_info_uint16_equal;
extern const VMStateInfo vmstate_info_int32_equal;
extern const VMStateInfo vmstate_info_uint32_equal;
extern const VMStateInfo vmstate_info_uint64_equal;
extern const VMStateInfo vmstate_info_int32_le;
extern const VMStateInfo vmstate_info_uint8;
extern const VMStateInfo vmstate_info_uint16;
extern const VMStateInfo vmstate_info_uint32;
extern const VMStateInfo vmstate_info_uint64;
/** Put this in the stream when migrating a null pointer.*/
#define VMS_NULLPTR_MARKER (0x30U) /* '0' */
extern const VMStateInfo vmstate_info_nullptr;
extern const VMStateInfo vmstate_info_cpudouble;
extern const VMStateInfo vmstate_info_timer;
extern const VMStateInfo vmstate_info_buffer;
extern const VMStateInfo vmstate_info_unused_buffer;
extern const VMStateInfo vmstate_info_tmp;
extern const VMStateInfo vmstate_info_bitmap;
extern const VMStateInfo vmstate_info_qtailq;
extern const VMStateInfo vmstate_info_gtree;
extern const VMStateInfo vmstate_info_qlist;
#define type_check_2darray(t1,t2,n,m) ((t1(*)[n][m])0 - (t2*)0)
/*
* Check that type t2 is an array of type t1 of size n,
* e.g. if t1 is 'foo' and n is 32 then t2 must be 'foo[32]'
*/
#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
/*
* type of element 0 of the specified (array) field of the type.
* Note that if the field is a pointer then this will return the
* pointed-to type rather than complaining.
*/
#define typeof_elt_of_field(type, field) typeof(((type *)0)->field[0])
/* Check that field f in struct type t2 is an array of t1, of any size */
#define type_check_varray(t1, t2, f) \
(type_check(t1, typeof_elt_of_field(t2, f)) \
+ QEMU_BUILD_BUG_ON_ZERO(!QEMU_IS_ARRAY(((t2 *)0)->f)))
#define vmstate_offset_value(_state, _field, _type) \
(offsetof(_state, _field) + \
type_check(_type, typeof_field(_state, _field)))
#define vmstate_offset_pointer(_state, _field, _type) \
(offsetof(_state, _field) + \
type_check_pointer(_type, typeof_field(_state, _field)))
#define vmstate_offset_array(_state, _field, _type, _num) \
(offsetof(_state, _field) + \
type_check_array(_type, typeof_field(_state, _field), _num))
#define vmstate_offset_2darray(_state, _field, _type, _n1, _n2) \
(offsetof(_state, _field) + \
type_check_2darray(_type, typeof_field(_state, _field), _n1, _n2))
#define vmstate_offset_sub_array(_state, _field, _type, _start) \
vmstate_offset_value(_state, _field[_start], _type)
#define vmstate_offset_buffer(_state, _field) \
vmstate_offset_array(_state, _field, uint8_t, \
sizeof(typeof_field(_state, _field)))
#define vmstate_offset_varray(_state, _field, _type) \
(offsetof(_state, _field) + \
type_check_varray(_type, _state, _field))
/* In the macros below, if there is a _version, that means the macro's
* field will be processed only if the version being received is >=
* the _version specified. In general, if you add a new field, you
* would increment the structure's version and put that version
* number into the new field so it would only be processed with the
* new version.
*
* In particular, for VMSTATE_STRUCT() and friends the _version does
* *NOT* pick the version of the sub-structure. It works just as
* specified above. The version of the top-level structure received
* is passed down to all sub-structures. This means that the
* sub-structures must have version that are compatible with all the
* structures that use them.
*
* If you want to specify the version of the sub-structure, use
* VMSTATE_VSTRUCT(), which allows the specific sub-structure version
* to be directly specified.
*/
#define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size = sizeof(_type), \
.info = &(_info), \
.flags = VMS_SINGLE, \
.offset = vmstate_offset_value(_state, _field, _type), \
}
#define VMSTATE_SINGLE_FULL(_field, _state, _test, _version, _info, \
_type, _err_hint) { \
.name = (stringify(_field)), \
.err_hint = (_err_hint), \
.version_id = (_version), \
.field_exists = (_test), \
.size = sizeof(_type), \
.info = &(_info), \
.flags = VMS_SINGLE, \
.offset = vmstate_offset_value(_state, _field, _type), \
}
/* Validate state using a boolean predicate. */
#define VMSTATE_VALIDATE(_name, _test) { \
.name = (_name), \
.field_exists = (_test), \
.flags = VMS_ARRAY | VMS_MUST_EXIST, \
.num = 0, /* 0 elements: no data, only run _test */ \
}
#define VMSTATE_POINTER(_field, _state, _version, _info, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_SINGLE|VMS_POINTER, \
.offset = vmstate_offset_value(_state, _field, _type), \
}
#define VMSTATE_POINTER_TEST(_field, _state, _test, _info, _type) { \
.name = (stringify(_field)), \
.info = &(_info), \
.field_exists = (_test), \
.size = sizeof(_type), \
.flags = VMS_SINGLE|VMS_POINTER, \
.offset = vmstate_offset_value(_state, _field, _type), \
}
#define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
.name = (stringify(_field)), \
.version_id = (_version), \
.num = (_num), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_ARRAY, \
.offset = vmstate_offset_array(_state, _field, _type, _num), \
}
#define VMSTATE_2DARRAY(_field, _state, _n1, _n2, _version, _info, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.num = (_n1) * (_n2), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_ARRAY, \
.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 = vmstate_offset_varray(_state, _field, _type), \
}
#define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
.name = (stringify(_field)), \
.field_exists = (_test), \
.num = (_num), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_ARRAY, \
.offset = vmstate_offset_array(_state, _field, _type, _num),\
}
#define VMSTATE_SUB_ARRAY(_field, _state, _start, _num, _version, _info, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.num = (_num), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_ARRAY, \
.offset = vmstate_offset_sub_array(_state, _field, _type, _start), \
}
#define VMSTATE_ARRAY_INT32_UNSAFE(_field, _state, _field_num, _info, _type) {\
.name = (stringify(_field)), \
.num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_VARRAY_INT32, \
.offset = vmstate_offset_varray(_state, _field, _type), \
}
#define VMSTATE_VARRAY_INT32(_field, _state, _field_num, _version, _info, _type) {\
.name = (stringify(_field)), \
.version_id = (_version), \
.num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_VARRAY_INT32|VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_VARRAY_UINT32(_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, \
.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_ALLOC(_field, _state, _field_num, _version, _info, _type) {\
.name = (stringify(_field)), \
.version_id = (_version), \
.num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_VARRAY_UINT16 | 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), \
.num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_VARRAY_UINT16, \
.offset = vmstate_offset_varray(_state, _field, _type), \
}
#define VMSTATE_VSTRUCT_TEST(_field, _state, _test, _version, _vmsd, _type, _struct_version) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.struct_version_id = (_struct_version), \
.field_exists = (_test), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_VSTRUCT, \
.offset = vmstate_offset_value(_state, _field, _type), \
}
#define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT, \
.offset = vmstate_offset_value(_state, _field, _type), \
}
#define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type *), \
.flags = VMS_STRUCT|VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.vmsd = &(_vmsd), \
.size = sizeof(_type *), \
.flags = VMS_STRUCT|VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_ARRAY_OF_POINTER(_field, _state, _num, _version, _info, _type) {\
.name = (stringify(_field)), \
.version_id = (_version), \
.num = (_num), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_ARRAY|VMS_ARRAY_OF_POINTER, \
.offset = vmstate_offset_array(_state, _field, _type, _num), \
}
#define VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, _v, _vmsd, _type) { \
.name = (stringify(_f)), \
.version_id = (_v), \
.num = (_n), \
.vmsd = &(_vmsd), \
.size = sizeof(_type *), \
.flags = VMS_ARRAY|VMS_STRUCT|VMS_ARRAY_OF_POINTER, \
.offset = vmstate_offset_array(_s, _f, _type*, _n), \
}
#define VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, _num, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.num = (_num), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_ARRAY, \
.offset = vmstate_offset_sub_array(_state, _field, _type, _start), \
}
#define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.num = (_num), \
.field_exists = (_test), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_ARRAY, \
.offset = vmstate_offset_array(_state, _field, _type, _num),\
}
#define VMSTATE_STRUCT_2DARRAY_TEST(_field, _state, _n1, _n2, _test, \
_version, _vmsd, _type) { \
.name = (stringify(_field)), \
.num = (_n1) * (_n2), \
.field_exists = (_test), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT | VMS_ARRAY, \
.offset = vmstate_offset_2darray(_state, _field, _type, \
_n1, _n2), \
}
#define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_VARRAY_UINT8, \
.offset = vmstate_offset_varray(_state, _field, _type), \
}
/* 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, \
.num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
.size = sizeof(_type), \
.vmsd = &(_vmsd), \
.flags = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_STRUCT_VARRAY_POINTER_UINT32(_field, _state, _field_num, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = 0, \
.num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
.size = sizeof(_type), \
.vmsd = &(_vmsd), \
.flags = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_STRUCT_VARRAY_POINTER_UINT16(_field, _state, _field_num, _vmsd, _type) { \
.name = (stringify(_field)), \
.version_id = 0, \
.num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
.size = sizeof(_type), \
.vmsd = &(_vmsd), \
.flags = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_STRUCT_VARRAY_INT32(_field, _state, _field_num, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_VARRAY_INT32, \
.offset = vmstate_offset_varray(_state, _field, _type), \
}
#define VMSTATE_STRUCT_VARRAY_UINT32(_field, _state, _field_num, _version, _vmsd, _type) { \
.name = (stringify(_field)), \
.num_offset = vmstate_offset_value(_state, _field_num, uint32_t), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_VARRAY_UINT32, \
.offset = vmstate_offset_varray(_state, _field, _type), \
}
#define VMSTATE_STRUCT_VARRAY_ALLOC(_field, _state, _field_num, _version, _vmsd, _type) {\
.name = (stringify(_field)), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
.size = sizeof(_type), \
.flags = VMS_STRUCT|VMS_VARRAY_INT32|VMS_ALLOC|VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, _type), \
}
#define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size = (_size - _start), \
.info = &vmstate_info_buffer, \
.flags = VMS_BUFFER, \
.offset = vmstate_offset_buffer(_state, _field) + _start, \
}
#define VMSTATE_VBUFFER_MULTIPLY(_field, _state, _version, _test, \
_field_size, _multiply) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
.size = (_multiply), \
.info = &vmstate_info_buffer, \
.flags = VMS_VBUFFER|VMS_POINTER|VMS_MULTIPLY, \
.offset = offsetof(_state, _field), \
}
#define VMSTATE_VBUFFER(_field, _state, _version, _test, _field_size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size_offset = vmstate_offset_value(_state, _field_size, int32_t),\
.info = &vmstate_info_buffer, \
.flags = VMS_VBUFFER|VMS_POINTER, \
.offset = offsetof(_state, _field), \
}
#define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _field_size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
.info = &vmstate_info_buffer, \
.flags = VMS_VBUFFER|VMS_POINTER, \
.offset = offsetof(_state, _field), \
}
#define VMSTATE_VBUFFER_ALLOC_UINT32(_field, _state, _version, \
_test, _field_size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
.info = &vmstate_info_buffer, \
.flags = VMS_VBUFFER|VMS_POINTER|VMS_ALLOC, \
.offset = offsetof(_state, _field), \
}
#define VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, _test, _version, _info, _size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.field_exists = (_test), \
.size = (_size), \
.info = &(_info), \
.flags = VMS_BUFFER, \
.offset = offsetof(_state, _field), \
}
#define VMSTATE_BUFFER_POINTER_UNSAFE(_field, _state, _version, _size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.size = (_size), \
.info = &vmstate_info_buffer, \
.flags = VMS_BUFFER|VMS_POINTER, \
.offset = offsetof(_state, _field), \
}
/* Allocate a temporary of type 'tmp_type', set tmp->parent to _state
* and execute the vmsd on the temporary. Note that we're working with
* the whole of _state here, not a field within it.
* We compile time check that:
* That _tmp_type contains a 'parent' member that's a pointer to the
* '_state' type
* That the pointer is right at the start of _tmp_type.
*/
#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \
.name = "tmp", \
.size = sizeof(_tmp_type) + \
QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \
type_check_pointer(_state, \
typeof_field(_tmp_type, parent)), \
.vmsd = &(_vmsd), \
.info = &vmstate_info_tmp, \
}
#define VMSTATE_UNUSED_BUFFER(_test, _version, _size) { \
.name = "unused", \
.field_exists = (_test), \
.version_id = (_version), \
.size = (_size), \
.info = &vmstate_info_unused_buffer, \
.flags = VMS_BUFFER, \
}
/* Discard size * field_num bytes, where field_num is a uint32 member */
#define VMSTATE_UNUSED_VARRAY_UINT32(_state, _test, _version, _field_num, _size) {\
.name = "unused", \
.field_exists = (_test), \
.num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
.version_id = (_version), \
.size = (_size), \
.info = &vmstate_info_unused_buffer, \
.flags = VMS_VARRAY_UINT32 | VMS_BUFFER, \
}
/* _field_size should be a int32_t field in the _state struct giving the
* size of the bitmap _field in bits.
*/
#define VMSTATE_BITMAP(_field, _state, _version, _field_size) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.size_offset = vmstate_offset_value(_state, _field_size, int32_t),\
.info = &vmstate_info_bitmap, \
.flags = VMS_VBUFFER|VMS_POINTER, \
.offset = offsetof(_state, _field), \
}
/* For migrating a QTAILQ.
* Target QTAILQ needs be properly initialized.
* _type: type of QTAILQ element
* _next: name of QTAILQ entry field in QTAILQ element
* _vmsd: VMSD for QTAILQ element
* size: size of QTAILQ element
* start: offset of QTAILQ entry in QTAILQ element
*/
#define VMSTATE_QTAILQ_V(_field, _state, _version, _vmsd, _type, _next) \
{ \
.name = (stringify(_field)), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.info = &vmstate_info_qtailq, \
.offset = offsetof(_state, _field), \
.start = offsetof(_type, _next), \
}
/*
* For migrating a GTree whose key is a pointer to _key_type and the
* value, a pointer to _val_type
* The target tree must have been properly initialized
* _vmsd: Start address of the 2 element array containing the data vmsd
* and the key vmsd, in that order
* _key_type: type of the key
* _val_type: type of the value
*/
#define VMSTATE_GTREE_V(_field, _state, _version, _vmsd, \
_key_type, _val_type) \
{ \
.name = (stringify(_field)), \
.version_id = (_version), \
.vmsd = (_vmsd), \
.info = &vmstate_info_gtree, \
.start = sizeof(_key_type), \
.size = sizeof(_val_type), \
.offset = offsetof(_state, _field), \
}
/*
* For migrating a GTree with direct key and the value a pointer
* to _val_type
* The target tree must have been properly initialized
* _vmsd: data vmsd
* _val_type: type of the value
*/
#define VMSTATE_GTREE_DIRECT_KEY_V(_field, _state, _version, _vmsd, _val_type) \
{ \
.name = (stringify(_field)), \
.version_id = (_version), \
.vmsd = (_vmsd), \
.info = &vmstate_info_gtree, \
.start = 0, \
.size = sizeof(_val_type), \
.offset = offsetof(_state, _field), \
}
/*
* For migrating a QLIST
* Target QLIST needs be properly initialized.
* _type: type of QLIST element
* _next: name of QLIST_ENTRY entry field in QLIST element
* _vmsd: VMSD for QLIST element
* size: size of QLIST element
* start: offset of QLIST_ENTRY in QTAILQ element
*/
#define VMSTATE_QLIST_V(_field, _state, _version, _vmsd, _type, _next) \
{ \
.name = (stringify(_field)), \
.version_id = (_version), \
.vmsd = &(_vmsd), \
.size = sizeof(_type), \
.info = &vmstate_info_qlist, \
.offset = offsetof(_state, _field), \
.start = offsetof(_type, _next), \
}
/* _f : field name
_f_n : num of elements field_name
_n : num of elements
_s : struct state name
_v : version
*/
#define VMSTATE_SINGLE(_field, _state, _version, _info, _type) \
VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type)
#define VMSTATE_VSTRUCT(_field, _state, _vmsd, _type, _struct_version)\
VMSTATE_VSTRUCT_TEST(_field, _state, NULL, 0, _vmsd, _type, _struct_version)
#define VMSTATE_VSTRUCT_V(_field, _state, _version, _vmsd, _type, _struct_version) \
VMSTATE_VSTRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type, \
_struct_version)
#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) \
VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type)
#define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type) \
VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type)
#define VMSTATE_STRUCT_POINTER_TEST(_field, _state, _test, _vmsd, _type) \
VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, 0, _vmsd, _type)
#define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \
VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version, \
_vmsd, _type)
#define VMSTATE_STRUCT_2DARRAY(_field, _state, _n1, _n2, _version, \
_vmsd, _type) \
VMSTATE_STRUCT_2DARRAY_TEST(_field, _state, _n1, _n2, NULL, \
_version, _vmsd, _type)
#define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) \
VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, NULL, _version, _info, \
_size)
#define VMSTATE_BOOL_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_bool, bool)
#define VMSTATE_INT8_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t)
#define VMSTATE_INT16_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t)
#define VMSTATE_INT32_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t)
#define VMSTATE_INT64_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t)
#define VMSTATE_UINT8_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT16_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT32_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t)
#define VMSTATE_UINT64_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t)
#ifdef CONFIG_LINUX
#define VMSTATE_U8_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, __u8)
#define VMSTATE_U16_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, __u16)
#define VMSTATE_U32_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, __u32)
#define VMSTATE_U64_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, __u64)
#endif
#define VMSTATE_BOOL(_f, _s) \
VMSTATE_BOOL_V(_f, _s, 0)
#define VMSTATE_INT8(_f, _s) \
VMSTATE_INT8_V(_f, _s, 0)
#define VMSTATE_INT16(_f, _s) \
VMSTATE_INT16_V(_f, _s, 0)
#define VMSTATE_INT32(_f, _s) \
VMSTATE_INT32_V(_f, _s, 0)
#define VMSTATE_INT64(_f, _s) \
VMSTATE_INT64_V(_f, _s, 0)
#define VMSTATE_UINT8(_f, _s) \
VMSTATE_UINT8_V(_f, _s, 0)
#define VMSTATE_UINT16(_f, _s) \
VMSTATE_UINT16_V(_f, _s, 0)
#define VMSTATE_UINT32(_f, _s) \
VMSTATE_UINT32_V(_f, _s, 0)
#define VMSTATE_UINT64(_f, _s) \
VMSTATE_UINT64_V(_f, _s, 0)
#ifdef CONFIG_LINUX
#define VMSTATE_U8(_f, _s) \
VMSTATE_U8_V(_f, _s, 0)
#define VMSTATE_U16(_f, _s) \
VMSTATE_U16_V(_f, _s, 0)
#define VMSTATE_U32(_f, _s) \
VMSTATE_U32_V(_f, _s, 0)
#define VMSTATE_U64(_f, _s) \
VMSTATE_U64_V(_f, _s, 0)
#endif
#define VMSTATE_UINT8_EQUAL(_f, _s, _err_hint) \
VMSTATE_SINGLE_FULL(_f, _s, 0, 0, \
vmstate_info_uint8_equal, uint8_t, _err_hint)
#define VMSTATE_UINT16_EQUAL(_f, _s, _err_hint) \
VMSTATE_SINGLE_FULL(_f, _s, 0, 0, \
vmstate_info_uint16_equal, uint16_t, _err_hint)
#define VMSTATE_UINT16_EQUAL_V(_f, _s, _v, _err_hint) \
VMSTATE_SINGLE_FULL(_f, _s, 0, _v, \
vmstate_info_uint16_equal, uint16_t, _err_hint)
#define VMSTATE_INT32_EQUAL(_f, _s, _err_hint) \
VMSTATE_SINGLE_FULL(_f, _s, 0, 0, \
vmstate_info_int32_equal, int32_t, _err_hint)
#define VMSTATE_UINT32_EQUAL_V(_f, _s, _v, _err_hint) \
VMSTATE_SINGLE_FULL(_f, _s, 0, _v, \
vmstate_info_uint32_equal, uint32_t, _err_hint)
#define VMSTATE_UINT32_EQUAL(_f, _s, _err_hint) \
VMSTATE_UINT32_EQUAL_V(_f, _s, 0, _err_hint)
#define VMSTATE_UINT64_EQUAL_V(_f, _s, _v, _err_hint) \
VMSTATE_SINGLE_FULL(_f, _s, 0, _v, \
vmstate_info_uint64_equal, uint64_t, _err_hint)
#define VMSTATE_UINT64_EQUAL(_f, _s, _err_hint) \
VMSTATE_UINT64_EQUAL_V(_f, _s, 0, _err_hint)
#define VMSTATE_INT32_POSITIVE_LE(_f, _s) \
VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
#define VMSTATE_BOOL_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_bool, bool)
#define VMSTATE_INT8_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int8, int8_t)
#define VMSTATE_INT16_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int16, int16_t)
#define VMSTATE_INT32_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int32, int32_t)
#define VMSTATE_INT64_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int64, int64_t)
#define VMSTATE_UINT8_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT16_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT32_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint32, uint32_t)
#define VMSTATE_UINT64_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint64, uint64_t)
#define VMSTATE_TIMER_PTR_TEST(_f, _s, _test) \
VMSTATE_POINTER_TEST(_f, _s, _test, vmstate_info_timer, QEMUTimer *)
#define VMSTATE_TIMER_PTR_V(_f, _s, _v) \
VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *)
#define VMSTATE_TIMER_PTR(_f, _s) \
VMSTATE_TIMER_PTR_V(_f, _s, 0)
#define VMSTATE_TIMER_PTR_ARRAY(_f, _s, _n) \
VMSTATE_ARRAY_OF_POINTER(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer *)
#define VMSTATE_TIMER_TEST(_f, _s, _test) \
VMSTATE_SINGLE_TEST(_f, _s, _test, 0, vmstate_info_timer, QEMUTimer)
#define VMSTATE_TIMER_V(_f, _s, _v) \
VMSTATE_SINGLE(_f, _s, _v, vmstate_info_timer, QEMUTimer)
#define VMSTATE_TIMER(_f, _s) \
VMSTATE_TIMER_V(_f, _s, 0)
#define VMSTATE_TIMER_ARRAY(_f, _s, _n) \
VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer)
#define VMSTATE_BOOL_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_bool, bool)
#define VMSTATE_BOOL_ARRAY(_f, _s, _n) \
VMSTATE_BOOL_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_BOOL_SUB_ARRAY(_f, _s, _start, _num) \
VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_bool, bool)
#define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, _v) \
VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT16_ARRAY(_f, _s, _n) \
VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_UINT16_SUB_ARRAY(_f, _s, _start, _num) \
VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT16_2DARRAY(_f, _s, _n1, _n2) \
VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, 0)
#define VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, _v) \
VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT8_ARRAY(_f, _s, _n) \
VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_UINT8_SUB_ARRAY(_f, _s, _start, _num) \
VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT8_2DARRAY(_f, _s, _n1, _n2) \
VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, 0)
#define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)
#define VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, _v) \
VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint32, uint32_t)
#define VMSTATE_UINT32_ARRAY(_f, _s, _n) \
VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
#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_2DARRAY(_f, _s, _n1, _n2) \
VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, 0)
#define VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint64, uint64_t)
#define VMSTATE_UINT64_ARRAY(_f, _s, _n) \
VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_UINT64_SUB_ARRAY(_f, _s, _start, _num) \
VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint64, uint64_t)
#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_INT16_ARRAY(_f, _s, _n) \
VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t)
#define VMSTATE_INT32_ARRAY(_f, _s, _n) \
VMSTATE_INT32_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_INT64_ARRAY(_f, _s, _n) \
VMSTATE_INT64_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_BUFFER(_f, _s) \
VMSTATE_BUFFER_V(_f, _s, 0)
#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_BUFFER_START_MIDDLE_V(_f, _s, _start, 0)
#define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size) \
VMSTATE_VBUFFER(_f, _s, 0, NULL, _size)
#define VMSTATE_PARTIAL_VBUFFER_UINT32(_f, _s, _size) \
VMSTATE_VBUFFER_UINT32(_f, _s, 0, NULL, _size)
#define VMSTATE_BUFFER_TEST(_f, _s, _test) \
VMSTATE_STATIC_BUFFER(_f, _s, 0, _test, 0, sizeof(typeof_field(_s, _f)))
#define VMSTATE_BUFFER_UNSAFE(_field, _state, _version, _size) \
VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, vmstate_info_buffer, _size)
/*
* These VMSTATE_UNUSED*() macros can be used to fill in the holes
* when some of the vmstate fields are obsolete to be compatible with
* migrations between new/old binaries.
*
* CAUTION: when using any of the VMSTATE_UNUSED*() macros please be
* sure that the size passed in is the size that was actually *sent*
* rather than the size of the *structure*. One example is the
* boolean type - the size of the structure can vary depending on the
* definition of boolean, however the size we actually sent is always
* 1 byte (please refer to implementation of VMSTATE_BOOL_V and
* vmstate_info_bool). So here we should always pass in size==1
* rather than size==sizeof(bool).
*/
#define VMSTATE_UNUSED_V(_v, _size) \
VMSTATE_UNUSED_BUFFER(NULL, _v, _size)
#define VMSTATE_UNUSED(_size) \
VMSTATE_UNUSED_V(0, _size)
#define VMSTATE_UNUSED_TEST(_test, _size) \
VMSTATE_UNUSED_BUFFER(_test, 0, _size)
#define VMSTATE_END_OF_LIST() \
{}
int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, int version_id);
int vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, JSONWriter *vmdesc);
int vmstate_save_state_v(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, JSONWriter *vmdesc,
int version_id);
bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque);
#define VMSTATE_INSTANCE_ID_ANY -1
/* Returns: 0 on success, -1 on failure */
int vmstate_register_with_alias_id(VMStateIf *obj, uint32_t instance_id,
const VMStateDescription *vmsd,
void *base, int alias_id,
int required_for_version,
Error **errp);
/* Returns: 0 on success, -1 on failure */
static inline int vmstate_register(VMStateIf *obj, int instance_id,
const VMStateDescription *vmsd,
void *opaque)
{
return vmstate_register_with_alias_id(obj, instance_id, vmsd,
opaque, -1, 0, NULL);
}
void vmstate_unregister(VMStateIf *obj, const VMStateDescription *vmsd,
void *opaque);
void vmstate_register_ram(struct MemoryRegion *memory, DeviceState *dev);
void vmstate_unregister_ram(struct MemoryRegion *memory, DeviceState *dev);
void vmstate_register_ram_global(struct MemoryRegion *memory);
bool vmstate_check_only_migratable(const VMStateDescription *vmsd);
#endif
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