Once both cards are bound to pci-stub, do I need to unbind them before binding them to nvidia and vfio-pci? I just realized my script never unbinds the gpus from the kernel, so hopefully it will work this time.
On Tue, Feb 23, 2016 at 1:47 PM Garland Key <david.garland....@gmail.com> wrote: > Okay - I'll try it with pci-stub grabbing both at boot, then I'll unbind > both cards from the kernel in initramfs, then I'll assign one to vfio-pci > and the other to nvidia. From there, systemd will take over and try to > boot x (I think) and if this script works, I will have overcome this > hurdle. Hit me back if you think I'm not understanding something. > > On Tue, Feb 23, 2016 at 1:38 PM Ben J <btpprogr...@gmail.com> wrote: > >> Did vfio-pci bind? I would bind the vfio before nvidia in your script. >> You can try to unbind from nvidia but I know it generally doesn't work >> well. So for #2 I wouldn't expect that to work. I'm pretty bad with the >> boot process so I'll leave that for someone else. >> On Feb 23, 2016 1:33 PM, "Garland Key" <david.garland....@gmail.com> >> wrote: >> >>> @Alex & @Ben J >>> >>> I tried binding both cards to pci-stub in boot options and then running >>> the following script in initramfs: >>> >>> echo 0000:01:00.0 > /sys/bus/pci/drivers/pci-stub/unbind >>> echo 0000:01:00.1 > /sys/bus/pci/drivers/pci-stub/unbind >>> echo 0000:02:00.0 > /sys/bus/pci/drivers/pci-stub/unbind >>> echo 0000:02:00.1 > /sys/bus/pci/drivers/pci-stub/unbind >>> echo 0000:01:00.0 > /sys/bus/pci/drivers/nvidia/bind >>> echo 0000:01:00.1 > /sys/bus/pci/drivers/nvidia/bind >>> echo 0000:02:00.0 > /sys/bus/pci/drivers/vfio-pci/bind >>> echo 0000:02:00.1 > /sys/bus/pci/drivers/vfio-pci/bind >>> >>> This didn't work (nvidia driver doesn't attach to either card) but I >>> think I'm understanding more and will find a solution with the more >>> understanding I gain (call me Captain Obvious). >>> >>> I have a two questions that should help me understand what to do. >>> >>> 1. After initramfs runs, systemd takes over. At what point in this >>> process does the nvidia driver actually try to load and when does X try to >>> start? >>> >>> 2. Should I just not use pci-stub and instead just run a script in >>> initramfs that unbinds both cards and then binds each one to the driver >>> that I want? >>> >>> On Sun, Feb 21, 2016 at 12:58 PM Garland Key < >>> david.garland....@gmail.com> wrote: >>> >>>> I checked dmesg and there wasn't anything that stood out. There was a >>>> DRM error message for nvidia but it wasn't critical. I'll look into this >>>> more tomorrow. I have to go to sleep (I work at night). Thanks, Alex. >>>> I'll let you know if and when the advice you and Ben have shared works. >>>> >>>> On Sun, Feb 21, 2016 at 12:40 PM Alex Williamson < >>>> alex.william...@redhat.com> wrote: >>>> >>>>> On Sun, Feb 21, 2016 at 10:01 AM, Garland Key < >>>>> david.garland....@gmail.com> wrote: >>>>> >>>>>> It seems xorg crashed because the nvidia kernel module failed. >>>>>> Here's the xorg log file: >>>>>> >>>>> >>>>> Did the intended device get bound to the nvidia module? Are there >>>>> dmesg errors? You could try creating a file like: >>>>> >>>>> /etc/X11/xorg.conf.d/10-nvidia.conf: >>>>> Section "Device" >>>>> Identifier "Device0" >>>>> Driver "nvidia" >>>>> VendorName "NVIDIA Corporation" >>>>> BusID "PCI:1:0:0" >>>>> # Or PCI:2:0:0, depending on which is intended for the host >>>>> EndSection >>>>> >>>>> Maybe Xorg is complaining because it's trying to use both cards when >>>>> you only intend for it to use one. >>>>> >>>> >>> _______________________________________________ >>> vfio-users mailing list >>> vfio-users@redhat.com >>> https://www.redhat.com/mailman/listinfo/vfio-users >>> >>>
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