Adds support for Intels GVT-d feature to passthrough an integrated graphics device to a bhyve-guest.
No dedicated graphic card is neccessary to use this feature. If there is no dedicated graphic card build in, the FreeBSD host runs headless after booting the guest.
This patch is based on other patches and I'm going to split this patch into smaller patches to simplify review. For easier testing, it includes all changes. As soon as some patches are merged, this patch will be rebased.
- Intel CPU with VT-d
- BIOS option "PM Support" set to Enabled
How to enable GVT-d:
Just add your integrated graphics device to bhyve as any other PCI Passthru device
bhyve -c 2 -m 4G -A -H -S -w \ -s 0,hostbridge \ -s 2,passthru,0/2/0 \ -s 4,virtio-blk,/root/win/win10.img \ -s 5,virtio-net,tap10 \ -s 31,lpc \ -l com1,stdio \ -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \ win10
|Debian||Working with "pci=nocrs" as kernel cmdline option|
|FreeBSD||Working (13.0-CURRENT - 20200903 snapshot)|
Tested with Windows as a guest:
|Sandy Bridge||Not Working (Windows reports that the device works properly but there's no correct display output)|
- Install your VM on the "old" way with GVT-d disabled
- Boot into your VM with GVT-d enabled and install the graphics driver (not required for Ubuntu 20.04)
- Install i915 driver
- Add "pci=nocrs" option as kernel parameter:
- add "pci=nocrs" to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub
- "sudo update-grub"
- Do not use a "fbuf" device in your bhyve cmd. It crashes your VM while installing graphics driver. Use Remote-Desktop instead.
- Install igfx driver (download here)
- Boot your VM with GVT-d enabled
- The bhyve-edk2 doesn't contain the Intel GOP driver. Therefore, there is no graphical output while booting. First graphical output is displayed when the Guest-OS driver is loaded. This also means that there is no graphical output while installing an Guest-OS.