Re: [Xen-users] Solved - PCIe/VGA passthrough

["Teo En Ming (Zhang Enming)" <singapore.mr.teo.en.ming@xxxxxxxxx>]

On 20/09/2012 01:42, Marc Tousignant wrote:
> -----Original Message-----
> From: Dariusz Krempa [mailto:imperiaonline4@xxxxxxxxx]
> Sent: Wednesday, September 19, 2012 11:23 AM
> To: Marc Tousignant
> Subject: Re: [Xen-users] PCIe/VGA passthrough
>
> 2012/9/19 Marc Tousignant<myrdhn@xxxxxxxxx>:
> > -----Original Message-----
> > From: Dariusz Krempa [mailto:imperiaonline4@xxxxxxxxx]
> > Sent: Wednesday, September 19, 2012 9:29 AM
> > To: Marc Tousignant
> > Subject: Re: [Xen-users] PCIe/VGA passthrough
> >
> >
> > Hi.
> > I've spend last few days to turn on vga passthrough on my box and
> > finally i did it. Everything what i've read about configurations tells
> > me that its not possible with my MB (Asus P8H67 + Asus GTX560 Top), but...
> > I followed also tutorial from Teo En Ming and i did patch from David
> > Gis. I have no BAR's, then i used ranges from dmesg | grep '1:00.0' |
> > grep mem and did patch like following David's Gis and Teo En Ming
> descriptions.
> > I'm not yet sure that is full success, but Gpu-z and Cpu-z recognized
> > my hardware, also benchmark from Unigin heaven is pretty good. I did
> > pciback configuration for window xp DomU not like Teo En Ming with
> > pci-stub. I hope this will helpfully for You.
> >
> > ---
> >
> > Unfortunately, this was not helpful at all. I'm only seeing 1 BAR/mem
> > line pci 0000:01:00.0: BAR 6: assigned [mem 0xcd000000-0xcd01ffff
> > pref]
> >
> > But my video card has ranges:
> >          Region 0: Memory at cc000000 (32-bit, non-prefetchable) [size=16M]
> >          Region 1: Memory at b0000000 (64-bit, prefetchable) [size=256M]
> >          Region 3: Memory at ca000000 (64-bit, non-prefetchable) [size=32M]
> >          Region 5: I/O ports at 9c00 [size=128] What the dmesg seems to
> > be finding is the one line from the lspci output on my card:
> >           [virtual] Expansion ROM at cd000000 [disabled] [size=128K]
> >
> > MarcT
> I am totally newbie with linux and Xen, but i think You could rebuild
> Dom0 or Xen or both, but first try to see what You get from this and compare
> to David's Gis output. I have for all "=y"
>
> grep -i xen /boot/config
>
> ----
>
> Solved it. Turns out you can't find the memory without first setting up the
> kernel commands to hide the device.
>
> dmesg | grep 01:00.0 | grep "pci.*mem"
> pci 0000:01:00.0: BAR 0: assigned [mem 0xcc000000-0xccffffff]
> pci 0000:01:00.0: BAR 1: assigned [mem 0xb0000000-0xbfffffff 64bit pref]
> pci 0000:01:00.0: BAR 3: assigned [mem 0xca000000-0xcbffffff 64bit]
> pci 0000:01:00.0: BAR 6: assigned [mem 0xcd000000-0xcd01ffff pref]
>
> MarcT
>
>
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Dear MarcT,

May I know the exact steps you have taken to get all the BARs? I don't 
have any BAR at all.
Solved it. Turns out you can't find the memory without first setting up the
kernel commands to hide the device.

dmesg | grep 01:00.0 | grep "pci.*mem"
pci 0000:01:00.0: BAR 0: assigned [mem 0xcc000000-0xccffffff]
pci 0000:01:00.0: BAR 1: assigned [mem 0xb0000000-0xbfffffff 64bit pref]
pci 0000:01:00.0: BAR 3: assigned [mem 0xca000000-0xcbffffff 64bit]
pci 0000:01:00.0: BAR 6: assigned [mem 0xcd000000-0xcd01ffff pref]


--
Yours sincerely,

Mr. Teo En Ming (Zhang Enming)
Singapore


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