restoring previously passthroughed adapters

Spiros Papageorgiou

Well-Known Member
Aug 1, 2017
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0
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Hi all,

I am on Proxmox 5.4.6 and I did a passthrough of an Intel x710 adapter to a VM. The adapter had a interface name on Proxmox (enp59s0f0) and after the VM started, the adapter was removed from Proxmox.
I have two questions:
- Now I have stopped the VM and I have removed the passthrough adapter from the VM. So, I want to have the adapter available in Proxmox, again as before. How do i do that? Keep in mind that, I can't "rmmod i40e and modprobe i40e", because I have two x710 adapters and the other one is vital for proxmox. Also I would not like to reboot.
- When I did the passthrough on the VM, the VM reported something strange:
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: [8086:1572] type 00 class 0x020000
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: reg 0x10: [mem 0xf9000000-0xf9ffffff 64bit pref]
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: reg 0x1c: [mem 0xfa000000-0xfa007fff 64bit pref]
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: reg 0x30: [mem 0xfe800000-0xfe87ffff pref]
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: Max Payload Size set to 128 (was 256, max 2048)
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[Sat Nov 30 17:59:42 2019] pci 0000:01:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s x1 link at 0000:00:1c.0 (capable of 63.008 Gb/s with 8 G


The last line, which says that the card is PCI-e x1, is not true. the card is x8. Why does it say that? It is a 10G port and I need more than the 2Gb/s that it seems to be able to handle.

Thanx,
Sp
 

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