Re: [Qemu-devel] Virtualbox svga card in KVM

[Sriram Murthy]

Hi,


>Personally, I think that the connection between VirtualBox and QEMU is
>very unidirectional if there is any... So code-wise our focus should
>rather be to avoid code copies/divergence within our tree and to share
>code with existing in-tree devices, especially if you are not paid to
>continuously take care of this device once accepted into QEMU - that's
>how I interpret PMM's question below.

>There is nothing generally wrong with using KVM for guest driver
>development or to make existing stripped-down guest images work at all
>by adding such a special device.

>However, proposing to adopt a random vendor's paravirtual graphics card
>just because it has a few more resolutions and drivers on a particular
>platform does not strike me as a big advantage over SPICE, VMware VGA or
>past virtio-vga/-fb standardization attempts.

Well, this idea came to me after I tried to use an OpenGL program that I wrote 
in Win7 running on KVM with a local SDL display interface. 
The experience was so bad, and to give it a shot, I ran it on VirtualBox, with 
the same guest image (but with VirtualBox WDDM drivers) and there was a night 
and day difference in experience.
Also, frankly, IMHO, adding a new card to KVM (regardless of the features it 
brings to the table) will only provide more choices for the end KVM user!.

-Sriram

> 
> -Sriram
> 
> 
> 
> ----- Original Message -----
> From: Peter Maydell <address@hidden>
> To: Sriram Murthy <address@hidden>
> Cc: Stefan Hajnoczi <address@hidden>; qemu list <address@hidden>; 
> "address@hidden" <address@hidden>
> Sent: Monday, April 8, 2013 8:11 AM
> Subject: Re: [Qemu-devel] Virtualbox svga card in KVM
> 
> On 6 April 2013 00:52, Sriram Murthy <address@hidden> wrote:
>> (actually, the virtualbox SVGA card is based off of the KVM VGA card)
> 
> Is it possible to implement it as an extension to the VGA
> card device, or has it diverged incompatibly such that it
> has to be its own separate device model?
> 
> thanks
> -- PMM

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