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Date: Mon, 23 Aug 2010 20:24:33 +0200
From: Jan Kiszka <jan.kiszka@siemens.com>
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Subject: [Qemu-devel] Re: [PATCH v2 0/7] APIC/IOAPIC cleanup
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: "Liu @mail.corp.redhat.com>> \"Liu, Jinsong\"" <jinsong.liu@intel.com>, Markus Armbruster <armbru@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, Blue Swirl <blauwirbel@gmail.com>, Avi Kivity <avi@redhat.com>, Paul Brook <paul@codesourcery.com>

Anthony Liguori wrote:
> On 08/23/2010 10:10 AM, Markus Armbruster wrote:
>> You lost me.  A few messages upthread.
>>
>> What's the *practical* problem again?
>>    
> 
> CPU hotplug adds a local APIC to Sysbus but Sysbus does not allow hot plug.
> 
> I believe the right short term way to fix this is to take the local APIC
> off of Sysbus.  The right long term fix is to not make the local APIC a
> qdev device and instead fold it into CPUX86State.

This pushes the issue to the CPU. I'm convinced CPUs should become qdevs
as well, so we need a hotplug-capable bus anyway.

Jan

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