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Date: Thu, 03 Feb 2011 18:18:24 +0100
From: Jan Kiszka <jan.kiszka@siemens.com>
MIME-Version: 1.0
Subject: Re: [Qemu-devel] [0.14?][PATCH 3/4] ioapic: Prepare for base address
	relocation
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To: Blue Swirl <blauwirbel@gmail.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, Gleb Natapov <gleb@redhat.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, Marcelo Tosatti <mtosatti@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Alexander Graf <agraf@suse.de>, Avi Kivity <avi@redhat.com>

On 2011-02-03 18:03, Blue Swirl wrote:
> On Thu, Feb 3, 2011 at 2:55 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
>> The registers of real IOAPICs can be relocated during runtime (via
>> chipset registers). We don't support this yet, but qemu-kvm carries the
>> current base address in its version 2 vmstate.
>>
>> To align both implementations for migratability, add the proper
>> infrastructure to accept initial as well as updated base addresses and
>> include the current address in the vmstate. This is done in a way that
>> will also allow multiple IOAPICs in the future.
> 
> Nack, the addresses should be device properties.

Hmm.... we could make default_base_address a property. Will change that.
But current_base_address is just the same as apicbase and can't be a
property.

Jan

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