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Re: [Qemu-ppc] [PATCH v3 8/9] vmstate: Add preallocation for migrating a

From: Alexey Kardashevskiy
Subject: Re: [Qemu-ppc] [PATCH v3 8/9] vmstate: Add preallocation for migrating arrays (VMS_ALLOC flag)
Date: Thu, 19 Jun 2014 23:56:08 +1000
User-agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

On 06/13/2014 02:57 AM, Alexander Graf wrote:
> On 06/12/2014 05:02 PM, Alexey Kardashevskiy wrote:
>> On 06/08/2014 09:59 AM, Alexey Kardashevskiy wrote:
>>> On 06/03/2014 11:19 PM, Alexey Kardashevskiy wrote:
>>>> On 05/30/2014 07:34 PM, Alexey Kardashevskiy wrote:
>>>>> There are few helpers already to support array migration. However they
>>>>> all
>>>>> require the destination side to preallocate arrays before migration which
>>>>> is not always possible due to unknown array size as it might be some
>>>>> sort of dynamic state. One of the examples is an array of MSIX-enabled
>>>>> devices in SPAPR PHB - this array may vary from 0 to 65536 entries and
>>>>> its size depends on guest's ability to enable MSIX or do PCI hotplug.
>>>>> This adds new VMSTATE_VARRAY_STRUCT_ALLOC macro which is pretty
>>>>> similar to
>>>>> VMSTATE_STRUCT_VARRAY_POINTER_INT32 but it can alloc memory for migratign
>>>>> array on the destination side.
>>>>> This defines VMS_ALLOC flag for a field.
>>>>> This changes vmstate_base_addr() to do the allocation when receiving
>>>>> migration.
>>>> Juan, Peter? No hurry, just pinging in order not to forget :) Thanks!
>>> Hi, anyone? :)
>> Ping?
> Acked-by: Alexander Graf <address@hidden>

This is cool and thanks :) But we still need to attract attention of others...


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