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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 15 Sep 2015 11:19:06 +0200
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Subject: Re: [Qemu-devel] [PATCH] ppc/spapr: Allow VIRTIO_VGA
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To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: qemu-ppc@nongnu.org, agraf@suse.de, qemu-devel@nongnu.org

On Di, 2015-09-15 at 15:51 +1000, Benjamin Herrenschmidt wrote:
> It works fine with the Linux driver out of the box

Do you actually want the vga compatibility bits on pseries?

There also is virtio-gpu-pci (same thing as virtio-vga but without vga
compatibility), which should already be enabled on ppc64.

The linux kvm driver certainly doesn't need vga compatibility.

For slof support it might be useful though, the vga compatibility bits
in virtio-vga are fully compatible to stdvga, so slof support should be
as simple as adding a PCI ID ...

cheers,
  Gerd