My first version patches including pBAR=vBAR and loading vbios from file
patches can work for many cards, but I didn't try your ATI card. If you need
more help, pls send out qemu log, and output of 'xm dmesg'.
BTW, pBAR=vBAR is too tricky, so we didn't try to push it into upstream.
If you try IGD pass-through, you can use recent changeset which already include
basic graphics pass-through patches, and only need to apply the IGD
pass-through patch to qemu. It should be very simple have a try.
From: Sander Eikelenboom [mailto:linux@xxxxxxxxxxxxxx]
Sent: Friday, November 27, 2009 5:16 PM
To: Han, Weidong
Subject: Re: [Xen-devel] Partial succes VGA passthrough Ati Radeon HD4850 on
Asus P5Q-EM DO (Q45 chipset)
Nope the Ati catalyst driver is not working properly, so it has fallen back to
the basic vga driver it seems.
I was going to tryout the IGD aswell, and perhaps i haven't got an entire copy
of the VGA bios or something like that, so I will try some more things.
I have applied all four patches your have sent in august/september (first
version), including the pbar=vbar patch
Is there anymore news / newer version of vga passthrough patches ?
Would it be handy to eventually have the pbar=vbar as generic option in
Friday, November 27, 2009, 3:06:15 AM, you wrote:
> Did you see the driver working properly in guest winxp? Did you applied the
> pBAR=vBAR patch? Mr. Teo En Ming (Zhang Enming)
> [space.time.universe@xxxxxxxxx] can successfully pass-through graphics card
> to winxp, you can search his mails for detailed steps.
> Actually, on Q45 chipset, you can pass-through the integrated graphics card
> to winxp with my IGD-passthrough patch (sent out last month).
> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Sander Eikelenboom
> Sent: Thursday, November 26, 2009 10:40 PM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] Partial succes VGA passthrough Ati Radeon HD4850 on Asus
> P5Q-EM DO (Q45 chipset)
> I just found some time to try vga passthrough again.
> With Han Weidong's patches from around august/september i am able to get
> winxp to boot passing through vga.
> The videocard is not properly recognised yet, but at least basic vga support
> is working in winxp.
> - P5Q-EM DO mainbord (Q45 chipset)
> - Ati Radeon 4850 PCI-e GFX card
> - 2 GB mem
> - Q9400 processor
> Thx so far
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