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@tristank, I've also answered this in your other post, but for anyone else that also stumbles across this thread in the future, presumably on the back of an J3455 ACS IOMMU quirks edit the answer to my original post is as follows. This malformed patch issue was the result of my removing a whole...

I found with my setup, that the easiest way to sidestep the malformed patches line was to not remove the entire "pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS))" line, but to leave the closing ")" on there so that you're left with: + if (!pci_is_pcie(dev) + ) The...

I know this could well be a OPNsense/FreeBSD VirtIO network driver problem, but wondered if anyone else was running this setup without issue before I try something else... I'm only getting 500-600mbps iperf3 throughput between my Proxmox host and OPNsense VM over a vmbridge (or any LAN client...

So the relevant patch section is: @@ -4514,6 +4615,7 @@ static const struct pci_dev_acs_enabled { { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */ /* Cavium ThunderX */ { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs }, + { PCI_ANY_ID...

When trying to build an updated Kernel for Proxmox, using the latest (v2.14.2) "0003-pci-Enable-overrides-for-missing-ACS-capabilities-4..patch" file pulled from git I get an error on the makefile output when it runs through the patch: patching file drivers/pci/quirks.c Using Plan A... patch...

I've discovered I have a very similar issue to yours with an Asrock J3455B-ITX board, in that among other devices the onboard NIC is in the same group as the PCIe slot, so can't pass through either to a VM without the host losing access to the other. I've not had chance to try the following...