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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2016-06-01 18:57:32 +1000 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-06-07 10:17:45 +1000 |
| commit | 705124ea6dca3ebfa13afddac9ce9475caf981a6 (patch) | |
| tree | 4949467977519c56d16f8899a9b08b191be29899 | |
| parent | 44f2e6c10eb2bf5dc3e36372ed574f71e80dba30 (diff) | |
| download | qemu-705124ea6dca3ebfa13afddac9ce9475caf981a6.zip qemu-705124ea6dca3ebfa13afddac9ce9475caf981a6.tar.gz qemu-705124ea6dca3ebfa13afddac9ce9475caf981a6.tar.bz2 | |
vmstate: Define VARRAY with VMS_ALLOC
This allows dynamic allocation for migrating arrays.
Already existing VMSTATE_VARRAY_UINT32 requires an array to be
pre-allocated, however there are cases when the size is not known in
advance and there is no real need to enforce it.
This defines another variant of VMSTATE_VARRAY_UINT32 with WMS_ALLOC
flag which tells the receiving side to allocate memory for the array
before receiving the data.
The first user of it is a dynamic DMA window which existence and size
are totally dynamic.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
| -rw-r--r-- | include/migration/vmstate.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h index 30ecc44..6c65811 100644 --- a/include/migration/vmstate.h +++ b/include/migration/vmstate.h @@ -386,6 +386,16 @@ extern const VMStateInfo vmstate_info_bitmap; .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), \ |