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Re: [Qemu-discuss] Booting GUI ubuntu VM on Aarch64

From: Yehuda Yitschak
Subject: Re: [Qemu-discuss] Booting GUI ubuntu VM on Aarch64
Date: Mon, 15 Feb 2016 11:55:47 +0000

> -----Original Message-----
> From: Peter Maydell [mailto:address@hidden
> Sent: Monday, February 15, 2016 13:44
> To: Yehuda Yitschak
> Cc: address@hidden
> Subject: Re: [Qemu-discuss] Booting GUI ubuntu VM on Aarch64
> On 15 February 2016 at 11:10, Yehuda Yitschak <address@hidden>
> wrote:
> > That makes sense however I need graphics for demo purposes.
> > How can I overcome this limitation ? should I re-build QEMU with a
> > different configuration, or is this limitation built-in in the QEMU
> > code  ?
> In theory you can add an emulated PCI graphics card to the virt board (via the
> command line). However the problem with this is that due to disagreements
> about whether the framebuffer should be cacheable or not between guest
> and host this will not work properly. (This is hackable around with a patch to
> the guest kernel to make it map the framebuffer as cacheable but that's kind
> of ugly.)
> I'm told that virtio-gpu-pci ought to work (your guest will need to have 
> virtio
> GPU support compiled into its kernel, and you'll need a newer QEMU than
> that 2.2 that you have.)

I just built qemu-2.5 so I can try the virtio-gpu-pci approach.

Btw - I found a demo from virtual open system where they show guest graphics on 
Exynos based Arndale board.
It doesn’t show how but maybe it gives a hint

Thanks for the tips 


> thanks
> -- PMM

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