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Date: Thu, 18 Nov 2010 11:03:21 +0200
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] Re: [PATCH] spice: add qxl device
Message-ID: <20101118090321.GD16832@redhat.com>
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To: Gleb Natapov <gleb@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>, qemu-devel@nongnu.org

On Thu, Nov 18, 2010 at 10:09:35AM +0200, Gleb Natapov wrote:
> On Wed, Nov 17, 2010 at 08:00:08PM +0200, Michael S. Tsirkin wrote:
> > > >>  If so: does qemu
> > > >>emulate this correctly?
> > > >
> > > >It mostly does.
> > > 
> > > I doubt it actually enables/disables the legacy vga ports.
> > 
> > I'll check when I have the time. We can fix it if it doesn't,
> > 
> So many guests (all of them?) just assume that vga ports and
> framebuffer is there.

Why do you think they disable io memory then?

> So what "fixing" this will buy us?

Besides spec compliancy, you mean?  Ability to support multiple VGA
cards. That's how it works I think: BIOS enables IO on the primary
VGA device only.

> --
> 			Gleb.