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[Qemu-devel] Re: [PATCH v2 0/7] APIC/IOAPIC cleanup


From: Anthony Liguori
Subject: [Qemu-devel] Re: [PATCH v2 0/7] APIC/IOAPIC cleanup
Date: Mon, 23 Aug 2010 13:29:17 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.11) Gecko/20100713 Lightning/1.0b1 Thunderbird/3.0.6

On 08/23/2010 01:24 PM, Jan Kiszka wrote:
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.

For the CPU, yes.  That implies making a CPUBus and making it hot pluggable.

Regards,

Anthony Liguori

Jan





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