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Re: [Qemu-devel] Re: [PATCH v2 9/9] Add -kvm option


From: Anthony Liguori
Subject: Re: [Qemu-devel] Re: [PATCH v2 9/9] Add -kvm option
Date: Wed, 07 Oct 2009 18:28:20 -0500
User-agent: Thunderbird 2.0.0.23 (X11/20090825)

Glauber Costa wrote:
On Wed, Oct 07, 2009 at 06:00:34PM -0500, Anthony Liguori wrote:
Glauber Costa wrote:
This option deprecates --enable-kvm. It is a more flexible option,
that makes use of qemu-opts, and allow us to pass on options to enable or
disable kernel irqchip, for example.
With proper qdev support, you could select kvm device models based on -device so I think this option isn't all that useful.

What I'd like to see in the interim is a kvm specific machine type that's defaulted to if kvm is enabled. I think this would be useful not only for enabling things like in-kernel apic, but also for selecting a default cpu model.
I don't really follow.

even if we have qdev on the irq controllers, one could still come up with
situations in which we'd like to force the use of one device over another.

Right, my assumption is that the devices will have different qdev names and therefore a user can select which one gets used.

Right now, -device is just additive. I'm not sure the best way to express something like, replace this existing device with this new device. Maybe some trickery with id=. Gerd, any thoughts?

Regards,

Anthony Liguori




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