[vfio-users] Fwd: vga and subsystem

[ehsan davoodi]

asus n56jk
vt-d support motherboard(bios) and cpu i7-4710HQ
recent laptop does not have pci express card slot
I just want to passthrough subsystem id  too of pci

On Fri, Aug 21, 2015 at 6:19 PM, Bradley Davis <bradleydavisjr at gmail.com>
wrote:

> What laptop make and model is it? If it doesn't support it now, chances
> are it wont due to a technical limitation. I was able to get PCI
> passthrough working in a HP Elitebook of mine by passing through the
> Express Card to the VM. I was only doing a USB express card. If you wanted
> to do VGA, you could create yourself an express card to pcie slot with
> powersupply. Here is an example:
> http://www.ioi.com.tw/products/proddetail.aspx?AppID=1008&CatID=113&HostID=2043&ProdID=1130005
>
> There are a  number of solutions out there so do the research. All this
> depends on if your Processor and Chipset support VT-D or IOMMU.
>
> On Thu, Aug 20, 2015 at 3:50 PM, ehsan davoodi <e.davoodi at gmail.com>
> wrote:
>
>> oh noooooooo
>> I cant belive.
>> Please tell the meaning of  "no-go" is not "not supported" or "not
>> supported yet" .:-)
>>
>> one of the best situation for VGA passthrough is in laptop which has two
>> vga.
>> I will wait and hope some one find the solution
>> thanks
>>
>> On Thu, Aug 20, 2015 at 10:05 PM, Will Marler <will at wmarler.com> wrote:
>>
>>> I think others will chime in here, but in general, VGA passthrough is a
>>> no-go on laptops : (.
>>>
>>> On Thu, Aug 20, 2015 at 9:54 AM, ehsan davoodi <e.davoodi at gmail.com>
>>> wrote:
>>>
>>>>
>>>> Dear Mr Alex Williamson AND VFIO USERS
>>>> first sorry about my English and
>>>> sorry for disturbing your time but I have some questions please.
>>>> I am not computer programmer and try to solve my problem but I cant.
>>>>
>>>> I am using Linux in my Laptop (OpenSuse 13.2) and want to use VGA
>>>> passthrough.
>>>> I add some patches "ACS override patch
>>>> <https://lkml.org/lkml/2013/5/30/513>" and "i915 VGA arbiter patch
>>>> <https://lkml.org/lkml/2014/5/9/517>" to kernel 4.1.3 and compile it.
>>>>
>>>> my problem is that subsystem ID of VGA does not recognized in Linux and
>>>> therefore when it passthrough kvm the driver of windows not installed. In
>>>> windows(host) vga works fine and  subsystem Id is 14AD1043.
>>>> In Linux just after boot the subsystem is correct but after running VM
>>>> and after shutting down it the subsystem not recognized (three condition
>>>> and outputs are in lspci-nv.txt) so in vm subsystem will be 00000000 (guest
>>>> win.png).
>>>> I tried to change main windows driver inf file nvami.inf(nvami.inf.txt)
>>>> and add another gtx 850m to list with zero subsystem but hash error not
>>>> permit driver installation.
>>>>
>>>> I extract VGA ROM(vga4pres) from laptop bios(n56jkas.203 in
>>>> http://dlcdnet.asus.com/pub/ASUS/nb/N56JK/N56JKAS203.zip) and use it
>>>> in xml but not changed.
>>>>  other PCI like my LAN recognized subsystem in Linux and when passed to
>>>> kvm worked fine.
>>>> Attachments are some of my outputs and my configs.
>>>>
>>>> lsmod
>>>>
>>>> lspci -vvvv
>>>>
>>>> /etc/modeprobe/99-local.conf
>>>>
>>>> my grub:
>>>>  resume=/dev/disk/by-uuid/a7507032-1ea2-43dc-a1aa-3d9754aedb19
>>>> splash=silent quiet showopts nomodeset intel_iommu=on acpi_backlight=vendor
>>>> vfio_iommu_type1.allow_unsafe_interrupts=1 i915.enable_hd_vgaarb=1
>>>> i915.modeset=0 pci-stub.ids=10de:1391 rd.driver.pre=vfio-pci
>>>> pcie_acs_override=downstream
>>>>
>>>> thanks lot
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>> vfio-users at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>
>>>>
>>>
>>
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>
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