From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gerd Hoffmann <kraxel@redhat.com>
Subject: Re: [PATCH] kvm tools, ui: Optimize SDL updates
Date: Mon, 06 Jun 2011 09:02:47 +0200
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References: <1307136023-16693-1-git-send-email-penberg@kernel.org> <20110604095451.GA15349@elte.hu> <11EB6DEC-41E9-4C0A-A057-7E88EBA2A008@suse.de> <20110604104245.GF16292@elte.hu> <34B8A15A-AEF2-4E2D-99F5-0EDB41447C31@suse.de> <20110604105443.GH16292@elte.hu> <EF895B2F-0138-4386-AF44-AA5531D8EB1D@suse.de>
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Cc: Ingo Molnar <mingo@elte.hu>, Pekka Enberg <penberg@kernel.org>,
	KVM list <kvm@vger.kernel.org>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	John Floren <john@jfloren.net>,
	Sasha Levin <levinsasha928@gmail.com>
To: Alexander Graf <agraf@suse.de>
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   Hi,

> Also, I'm fairly sure vesafb implements scrolling almost
> unconditionally. Check for "ypan" in drivers/video/vesafb.c.

ypan uses the protected mode interface provided by the vesa bios.
It is not used by default works on 32bit only.

>> If you think qxl-fb can be done gradually in that context then
>> that's probably the right solution. Is there *any* QXL code in the
>> kernel that would allow us to get started? I really know nothing
>> about QXL.
>
> I don't think there is. CC'ing Gerd for that discussion. He's taking
> care of all the upstreaming work and community efforts around QXL.

No kernel code right now.

cheers,
   Gerd