RE: [Xen-devel] RE: xen-unstable pci passthrough

["Han, Weidong" <weidong.han@xxxxxxxxx>]

Agree. It's cleaner in pciback. Community discussed it a long time ago. But no 
one did it for xen-unstable. Now it also needs to implement it in pci-stub for 
pv-ops dom0.

Regards,
Weidong

-----Original Message-----
From: Ian Pratt [mailto:Ian.Pratt@xxxxxxxxxxxxx] 
Sent: 2009年9月10日 19:24
To: Han, Weidong; 'Tim Moore'
Cc: 'xen-devel@xxxxxxxxxxxxxxxxxxx'; Ian Pratt
Subject: RE: [Xen-devel] RE: xen-unstable pci passthrough

> Tim,
> 
> the FLR code is in xend (tools/python/xen/util/pci.py).

IMO, it should live in pciback -- see the code in the XCI tree.

It would be good to get this cleaned up and upstream.

Ian


> 
> Regards,
> Weidong
> 
> ________________________________
> 
> From: Tim Moore [mailto:timothy.moore@xxxxxxxxxxx]
> Sent: 2009年9月10日 18:21
> To: Han, Weidong
> Cc: 'xen-devel@xxxxxxxxxxxxxxxxxxx'
> Subject: RE: [Xen-devel] RE: xen-unstable pci passthrough
> 
> 
> 
> hi Weidong,
> 
> 
> 
> Below, you mention the FLR code is in xen-unstable already - please could
> you point out where?
> 
> 
> 
> I thought that this code was in pciback and now transferred to pci-stub,
> but I can`t seem to find it anywhere ...
> 
> 
> 
> Cheers,
> 
> Tim
> 
> 
> 
> From: Han, Weidong [mailto:weidong.han@xxxxxxxxx]
> Sent: 03 September 2009 10:43
> To: Tim Moore
> Cc: 'enming.teo@xxxxxxxxxxxxxxx'; 'djmagee@xxxxxxxxxxxx'; 'xen-
> devel@xxxxxxxxxxxxxxxxxxx'
> Subject: RE: [Xen-devel] RE: xen-unstable pci passthrough
> 
> 
> 
> Tim,
> 
> 
> 
> See my comments belew.
> 
> 
> 
> 
> 
> ________________________________
> 
> From: Tim Moore [mailto:timothy.moore@xxxxxxxxxxx]
> Sent: 2009年9月3日 17:03
> To: Han, Weidong
> Cc: 'enming.teo@xxxxxxxxxxxxxxx'; djmagee@xxxxxxxxxxxx; xen-
> devel@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-devel] RE: xen-unstable pci passthrough
> 
> Hi Weidong,
> 
> 
> 
> Thank you for all your hard work ;)
> 
> 
> 
> I have just successfully passed through my Nvidia Geforce GTX260 as a
> fully functional card to my WinXP DomU !!!!!
> 
> 
> 
> My findings so far:
> 
> 1) Tried with my 9500 GT (Secondary card) which DOES load the driver
> successfully but NO output on the Monitor (VGA is sized correctly but
> monitor is OFF)
> 
> 2) GTX260 (Primary card) (Dom0 boot VGA) starting DomU from remote SSH
> console, VGA Loads and Display works !!!!
> 
> 
> 
> In both cases I am using the NVidia binary driver in the WinXP DomU.
> 
> 
> 
> The 9500GT (Secondary card) passthrough still has issues, the driver loads
> without the Monitor displaying anything (DPMS?) and if I make ANY changes
> to the DomU Graphics then the DomU locks up hard.
> 
> 
> 
> [Weidong]: I didn't try 9500GT. Seems it needs extra hacks.
> 
> 
> 
> In both cases the VGA card only works the FIRST time, I.e. FLR is required
> to reset the card for re-use, display become corrupt on second boot of
> DomU. Restart Dom0 and the VGA will work again the first time DomU is
> started.
> 
> 
> 
> [Weidong]:  Yes, it's not reset well. I suspect it's still in graphics
> mode, so cannot display the boot messages in VGA mode. In my experiments,
> WinXP guest can still boot into graphics mode, although you cannot see
> booting progress.
> 
> 
> 
> Is there anyway we can impletement the d3r, sbr or flr functionality that
> is in XCI? I would like to see if a sbr will enable to Card to be reset.
> 
> [Weidong]: these reset functions are already in xen-unstable, but no one
> can really reset gfx. In my feeling, it needs vendor specific method to
> reset it.
> 
> 
> 
> I would also like to debug the issue with Secondary passthrough as it
> seems that this is nearly there too ...
> 
> 
> 
> Regards,
> 
> Tim
> 
> 
> 
> 
> 
> 
> 
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Teo En Ming (Zhang Enming)
> Sent: 03 September 2009 05:12
> To: djmagee@xxxxxxxxxxxx; 'Han, Weidong'; xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-devel] RE: xen-unstable pci passthrough
> 
> 
> 
> Dear Magee,
> 
> 
> 
> Any luck with the Intel vga passthrough patches to xen 3.5-unstable on
> Intel DQ45CB with extra PCI-e x16 graphics card? Are you using pvops dom 0
> kernels 2.6.30-rc3 and 2.6.31-rc6?
> 
> 
> 
> Regards,
> 
> 
> Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering)
> BEng(Hons)(Mechanical Engineering)
> 
> Technical Support Engineer
> 
> Information Technology Department
> Asiasoft Online Pte Ltd
> Tampines Central 1 #04-01 Tampines Plaza
> Singapore 529541
> 
> Republic of Singapore
> Mobile: +65-9648-9798
> MSN: teoenming@xxxxxxxxxxx
> 
> ________________________________
> 
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of djmagee@xxxxxxxxxxxx
> Sent: Wednesday, September 02, 2009 6:59 PM
> To: Han, Weidong; xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-devel] RE: xen-unstable pci passthrough
> 
> 
> 
> That was the problem, thank you.  Now I’ll work on testing the gfx-
> passthrough patches.
> 
> 
> 
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Han, Weidong
> Sent: Tuesday, September 01, 2009 6:55 PM
> To: djmagee@xxxxxxxxxxxx; 'xen-devel@xxxxxxxxxxxxxxxxxxx'
> Subject: [Xen-devel] RE: xen-unstable pci passthrough
> 
> 
> 
> I suspect you are using old hvm config file. The device_model is changes
> in config file.
> 
> 
> 
> in old config file:
> 
> # New stuff
> device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
> 
> 
> 
> in new config file:
> 
> # Device Model to be used
> device_model = 'qemu-dm'
> 
> 
> 
> Pls check it, and use the latest config file to create guest.
> 
> 
> 
> Regards,
> 
> Weidong
> 
> 
> 
> ________________________________
> 
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of djmagee@xxxxxxxxxxxx
> Sent: 2009年9月2日 6:40
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] xen-unstable pci passthrough
> 
> I have not been able to passthrough any PCI devices using the latest xen-
> unstable.  I have a DQ45CB, and have successfully passed devices to guests
> using 3.4.1.
> 
> 
> 
> The latest c/s in my copy of xen-unstable is 20145.  I just started
> playing around with unstable yesterday, so I can’t tell you if earlier
> revisions worked.  I’ve tried with various dom0 kernels, the current
> 2.6.18.8-xen branch, a xenified 2.6.29.6, and a pvops 2.6.31-rc6, and in
> every case I get the same error.  I’ve tried both putting pci= in the
> config file, and hot-adding the device using xm pci-attach.  In every
> case, the xm command (either create or pci-attach) fails with the message
> “Error: Timed out waiting for device model action”.  The guests in every
> case are HVM guests, some flavors of Windows, as well as the Knoppix 5.3.1
> DVD.
> 
> 
> 
> The relevant xm dmesg output is:
> (XEN) PCI add device 00:1b.0
> 
> (XEN) [VT-D]iommu.c:1292:d0 domain_context_unmap:PCIe: bdf = 0:1b.0
> 
> (XEN) [VT-D]iommu.c:1178:d0 domain_context_mapping:PCIe: bdf = 0:1b.0
> 
> (XEN) [VT-D]io.c:284:d0 VT-d irq bind: m_irq = 37 device = 3 intx = 0
> 
> (XEN) [VT-D]iommu.c:1292:d0 domain_context_unmap:PCIe: bdf = 0:1b.0
> 
> (XEN) [VT-D]iommu.c:1178:d0 domain_context_mapping:PCIe: bdf = 0:1b.0
> 
> 
> 
> And the messages from qemu-log:
> 
> dm-command: hot insert pass-through pci dev
> 
> hot add pci slot -2 exceed.
> 
> 
> 
> Please let me know what else I need to supply to help resolve this
> problem.  If I need to enable debugging messages, let me know the best way
> to do this.
> 
> 
> 
> Doug Magee
> 
> djmagee@xxxxxxxxxxxx
> 
> 
> 
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