Questions tagged [pci-passthrough]
PCI passthrough allows PCI devices to appear and behave as if they were physically attached to the guest operating system when using KVM and Xen hypervisors.
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PCI Passthrough PCI Slot Reference Change
I'll do my best to explain this as its confusing. I have Qemu/Virtual Machine Manager on my host PC. I created an Ubuntu VM and assigned two PCI slots (which are physical network cards) to it within ...
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GPU passtrhough, subsystem lost
When I do lspci on my manjaro linux host I can see that my Nvidia GPU is a part of [1025:1409] subsystem (as is everything else on my machine). The GPU is in its own IOMMU group and has vfio-pci ...
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PCI Passthrough via OVMF; No Video Output
I've been following the Official Arch Linux Guide (https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF) and everything has been working exactly how it should be, but once I start the VM the ...
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kvm:the difference between "blacklist" and "softdep"
I am newbie here and I can only find the blog or readme from github.
Is there any official documents?
Emm,someone wrote the "blacklist" on "/etc/modules-load.d/modules.conf" while
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`libvirtd` crashes the system
Short version:
Using systemctl start libvirtd (or libvirtd.service, seems to have the same effect?) crashes the system, without warning, if one of the pools has /dev allocated.
Long version:
I'm ...
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How to isolate (reserve) GPUs with identical hardware IDs via IOMMU / dracut / kernel parameters (in VoidLinux)
I'm trying to set up pci/gpu passthrough on void.
Specifically, using the vfio-pci driver to "reserve" one of the GPUs.
I have been following the procedure outlined in this void-docs PR (and ...
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The strange power consumption behaviour of a Quadro card when `vfio-pci` has been removed an `nvidial` reattached
I have built a system with a Geforce GTX 960 and a Quadro M4000 graphics card, that I usually pass through to a virtual machine. The GTX 960 card is only used by the host.
Normally, the Quadro card ...
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How to passthrough GPU in QEMU-KVM? Failing to start
I have tried countless guides and always ended up with the same result, so it's time I ask those who know what's going on.
I have all virtualisation IOMMU etc enabled in my BIOS. I am running the VM ...
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How can I prevent USB drivers (EHCI) from loading on specific USB controller (PCIe card)?
I'm using Debian 10.8 with Linux Kernel 4.19.0-14.
I'm trying to use IOMMU to passthrough an entire USB controller (PCI Express card), but I'm having problems. The kernel is loading the ohci_pci and ...
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Too few IOMMU groups - split?
I bought AMD RyZEN 5 2400G, Gigabyte B450M D3SH and 16GB RAM. Some elder GPU AMD Radeon HD 6XXX I took for passing through. But I was unpleasantly surprised with the IOMMU grouping.
I put the GPU in ...
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Find out PCI(e) ID of a working PCI(e) device, in this case a USB controller
I inserted a mPCIe card - a USB controller - into one of my computers mPCIe slots.
Attached USB devices are shown by lsusb and everything is working fine.
Now I'm running KVM/qemu and I want to pass-...
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Blacklisting nouveau driver and bochs_drm don't work at all in the xen / ubuntu 20.10 guest os
I'm trying to passthrough my nvidia GTX 1060 from ubuntu 20.10 host to xen with ubuntu 20.10 guest os. Below you can see how is configured everything (default vga display adapter / nvidia 1060 driver ...
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VT-d support enabled but IOMMU groups are missing
On a Supermicro A2SDi-8C+-HLN4F Atom C3758 system I see that VT-d support is enabled in the BIOS but I can't find any IOMMU groups under Linux (Fedora 31):
$ ls /sys/kernel/iommu_groups
$
The kernel ...
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PCI passthrough stopped working in (K)ubuntu 20.04 guest, but only after login
I have been using KVM/QEMU for GPU passthrough successfully for over a year now. In my case, I was passing an GTX1070 to linux and an AMD RX480 to Windows. When my Arch installation got messed up, I ...
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Passthrough SATA Controller KVM
Ahoy friends.
Currently i use Fedora 31 and KVM to run a few virtual machines, including my storage machine, based on FreeBSD.
All the HDDs which are connected to my SATA controller should be passed ...
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