PCI Passthough not working

lessfoobar

I've been following the tutorial for pci passthrough on the wiki but it dosnt' work for me.

03:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10)
03:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10)
04:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
07:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
07:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)

# those are all the network devices that will be passed through pfsense vm.
/opt/xensource/libexec/xen-cmdline --set-dom0 "xen-pciback.hide=(0000:03:00.0)(0000:03:00.1)(0000:04:00.0)(0000:04:00.1)(0000:04:00.2)(0000:04:00.3)(0000:07:00.0)"
# no output of the command

/opt/xensource/libexec/xen-cmdline --delete-dom0 xen-pciback.hide
# no output of the command

reboot

xl pci-assignable-list
# empty

So yeah I'm on step 4 and I can't continue because the devices don't show up after reboot.

olivierlambert

@lessfoobar said in PCI Passthough not working:

/opt/xensource/libexec/xen-cmdline --delete-dom0 xen-pciback.hide

This command will basically remove everything you did before. So don't use it if you want to keep your parameters added to Xen and then reboot

lessfoobar

@olivierlambert thanks for the feedback. I guess I understood the documentation wrong. Because I remember how Wendell from level1techs was talking about removing the ethernet devices from dom0...

olivierlambert

xen-pciback.hide is precisely removing the devices from the Dom0.

However, xen-cmdline --delete-dom0 will actually REMOVE the parameters you entered in the grub configuration file.

In other words, xen-cmdline is a helper tool to edit Grub configuration file for Xen and Linux arguments (on boot).

As it's written, xen-cmdline --set-dom0 will actually set parameters for the dom0, and xen-cmdline --delete-dom0 will remove them.