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Re: [Qemu-ppc] [PATCH qemu v16 04/19] vmstate: Define VARRAY with VMS_AL
From: |
Alexey Kardashevskiy |
Subject: |
Re: [Qemu-ppc] [PATCH qemu v16 04/19] vmstate: Define VARRAY with VMS_ALLOC |
Date: |
Wed, 1 Jun 2016 12:29:57 +1000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 |
On 27/05/16 17:54, Alexey Kardashevskiy wrote:
> On 04/05/16 16:52, Alexey Kardashevskiy wrote:
>> 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>
>
>
> In what tree is this going to go? pseries? Or migration?
Anyone?
>
>
>
>> ---
>> 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), \
>>
>
>
--
Alexey
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_iommu, vfio, memory: Notify IOMMU about starting/stopping listening, (continued)
- [Qemu-ppc] [PATCH qemu v16 08/19] spapr_iommu: Introduce "enabled" state for TCE table, Alexey Kardashevskiy, 2016/05/04
- [Qemu-ppc] [PATCH qemu v16 02/19] memory: Call region_del() callbacks on memory listener unregistering, Alexey Kardashevskiy, 2016/05/04
- [Qemu-ppc] [PATCH qemu v16 04/19] vmstate: Define VARRAY with VMS_ALLOC, Alexey Kardashevskiy, 2016/05/04
- [Qemu-ppc] [PATCH qemu v16 11/19] spapr_iommu: Add root memory region, Alexey Kardashevskiy, 2016/05/04
- [Qemu-ppc] [PATCH qemu v16 03/19] memory: Fix IOMMU replay base address, Alexey Kardashevskiy, 2016/05/04
- [Qemu-ppc] [PATCH qemu v16 14/19] vfio: spapr: Add DMA memory preregistering (SPAPR IOMMU v2), Alexey Kardashevskiy, 2016/05/04
[Qemu-ppc] [PATCH qemu v16 19/19] spapr_pci/spapr_pci_vfio: Support Dynamic DMA Windows (DDW), Alexey Kardashevskiy, 2016/05/04