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Re: [Xen-devel] [PATCH v4] igd-passthrough-i440FX: convert to realize()



Hi

On 01/11/2016 05:53 PM, Hao, Xudong wrote:
Stefano,

Patch http://marc.info/?l=qemu-devel&m=145137863501079 don't works for qemu at 
all, some conflict when git apply.
Patch http://marc.info/?l=qemu-devel&m=145137863501079 is based on patch 
http://marc.info/?l=qemu-devel&m=145172165010604, right?

I can boot up Linux VM with IGD pass-through with latest qemu (without any additional 
patch), guest run 3D "nexuiz" and get 180fps.


Because commit: 349a3b1cc is already in the latest qemu(maybe the day before yesterday?), so I guess that is why latest qemu works well with
igd-passthru and also the same reason for git apply conflict?

Will try the two patch together later.

Thanks,
-Xudong


-----Original Message-----
From: Stefano Stabellini [mailto:stefano.stabellini@xxxxxxxxxxxxx]
Sent: Friday, January 8, 2016 7:57 PM
To: Hao, Xudong <xudong.hao@xxxxxxxxx>
Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>; Lars Kurth
<lars.kurth.xen@xxxxxxxxx>; Lars Kurth <lars.kurth@xxxxxxxxxx>; Cao jin
<caoj.fnst@xxxxxxxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxx; Stefano Stabellini
<Stefano.Stabellini@xxxxxxxxxx>; qemu-devel@xxxxxxxxxx; Michael S. Tsirkin
<mst@xxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH v4] igd-passthrough-i440FX: convert to realize()

Since you are at it, could you please let me know how well igd passthrough
works without this bugfix:

http://marc.info/?l=qemu-devel&m=145172165010604

which is about to land in QEMU.  I guess it doesn't work at all?

I am asking because I would like to know the level of support we need to provide
to igd passthrough with the latest QEMU release (2.5).


On Thu, 7 Jan 2016, Hao, Xudong wrote:
Sure. I'll test it soon.

Thanks,
-Xudong

-----Original Message-----
From: Stefano Stabellini [mailto:stefano.stabellini@xxxxxxxxxxxxx]
Sent: Wednesday, January 6, 2016 8:18 PM
To: Lars Kurth <lars.kurth.xen@xxxxxxxxx>
Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>; Hao,
Xudong <xudong.hao@xxxxxxxxx>; Lars Kurth <lars.kurth@xxxxxxxxxx>;
Cao jin <caoj.fnst@xxxxxxxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxx;
Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxx>;
qemu-devel@xxxxxxxxxx; Michael S. Tsirkin <mst@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH v4] igd-passthrough-i440FX: convert
to realize()

Hello Xudong,

please test this patch:

http://marc.info/?l=qemu-devel&m=145137863501079

with an intel graphic card assigned to a Xen guest. If everything
still works as expected, please reply with your Tested-by.

Thanks,

Stefano

On Wed, 6 Jan 2016, Lars Kurth wrote:
Hi folks,
let me introduce you to Xudong from Intel, who is willing to help out.
Best Regards
Lars

On 4 Jan 2016, at 15:41, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx>
wrote:

On Mon, 4 Jan 2016, Lars Kurth wrote:
On 04/01/2016 14:47, "Stefano Stabellini"
<stefano.stabellini@xxxxxxxxxxxxx> wrote:

Unfortunately I don't have a setup to test this either. Maybe
Lars can find out who should be involved on the Intel side on this.

I can certainly help to this and get back to you. What exactly
are we asking Intel to do?
It is not clear to me from this email thread

Tiejun Chen, the author of the Intel graphic card passthrough
patches for QEMU, seems to have left the company. It would be
nice if somebody else tested this patch with an intel graphic
card assigned to a guest VM.

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.


--
Yours Sincerely,

Cao jin



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