[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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

From: Alexander Graf
Subject: Re: [Qemu-ppc] [PATCH v3 8/9] vmstate: Add preallocation for migrating arrays (VMS_ALLOC flag)
Date: Thu, 12 Jun 2014 18:57:01 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130910 Thunderbird/17.0.9

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

Juan, Peter? No hurry, just pinging in order not to forget :) Thanks!

Hi, anyone? :)


Acked-by: Alexander Graf <address@hidden>


reply via email to

[Prev in Thread] Current Thread [Next in Thread]