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[Qemu-devel] [PATCH qemu v13 12/16] vmstate: Define VARRAY with VMS_ALLO
From: |
Alexey Kardashevskiy |
Subject: |
[Qemu-devel] [PATCH qemu v13 12/16] vmstate: Define VARRAY with VMS_ALLOC |
Date: |
Tue, 1 Mar 2016 20:10:37 +1100 |
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 <address@hidden>
Reviewed-by: David Gibson <address@hidden>
Reviewed-by: Thomas Huth <address@hidden>
---
include/migration/vmstate.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index 84ee355..1622638 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), \
--
2.5.0.rc3
[Qemu-devel] [PATCH qemu v13 14/16] spapr_pci: Add and export DMA resetting helper, Alexey Kardashevskiy, 2016/03/01
[Qemu-devel] [PATCH qemu v13 05/16] spapr_iommu: Add root memory region, Alexey Kardashevskiy, 2016/03/01