How to mask the PCI bus/slot/functions of the passed through devices on the DFLY
Hello to everyone. I have installed dragonflybsd 6.1 development version phisycally on my PC using the Hammer2 fs,using the commands below : cd /usr rm -rf src git clone git://git.dragonflybsd.org/dragonfly.git src make buildworld make buildkernel make installkernel make installworld make upgrade Rebooted pkg update pkg upgrade What I would like to do is to test how good is the passthrough of my nvidia graphic card inside a Linux VM using qemu and NVMM on the DFLY. First of all,I've added : "i915_load="YES" to /etc/rc.conf because the graphic card that I use on the host os is the UHD Graphics 630,as u can see below : vgapci1@pci0:0:2:0: class=0x030000 card=0xd0001458 chip=0x3e988086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = 'CoffeeLake-S GT2 [UHD Graphics 630]' class = display subclass = VGA But I have another GPU,but I want to use it as secondary,since I want to try to pass through it with Qemu. it is the GeForce RTX 2080Ti that u can see below : vgapci0@pci0:2:0:0: class=0x030000 card=0x250319da chip=0x1e0410de rev=0xa1 hdr=0x00 vendor = 'NVIDIA Corporation' device = 'TU102 [GeForce RTX 2080 Ti]' class = display subclass = VGA If you want to see all the hardware specifications of my PC,you can give a look here : https://pastebin.ubuntu.com/p/PQRYbCh7Wr/ Now,I didn't find any good informations about the passthrough of the devices on the DFLY howTos. Since it is a BSD derived os,I supposed that the developers had implemented the masking of the PCI device at bus/slot/functions,adding a parameter like that below inside the file /boot/loader.conf ; pptdevs="2/0/0 2/0/1 2/0/2 2/0/3" but it didn't work. So,what's the correct method to do that ? thanks. -- Mario.
