[re-adding vfio-users] On Mon, 11 Mar 2019 18:23:14 +0100 Cor Saelmans <c.saelm...@gmail.com> wrote:
> Thank you Alex for your reply. > > I tested earlier today with a fresh install of my ubuntu host in legacy > mode and this worked directly without any further customization. > > Just reinstalled my host back to EFI and tried your suggestion, but without > any result. > > I did not know display output is not supported with upt. > > I reinstalled my host again in legacy mode. The legacy mode I'm referring to is specifically for the VM, not the host, see: https://git.qemu.org/?p=qemu.git;a=blob;f=docs/igd-assign.txt;hb=HEAD The host can make a difference though, but it's usually in the availability of the vBIOS. For instance since we really only support SeaBIOS in the guest with physical IGD assignment, it may be necessary to boot the host in legacy mode to dump a legacy compatible ROM image for the device. The ROM image file can then be used for the VM regardless of the host booting via legacy or EFI. The entire idea of "support" with physical IGD assignment is a bit of a misnomer, Intel seems to have mostly abandoned the idea of Universal Passthrough Mode and IGD legacy mode is barely supportable by it's very nature and lack of standards within the hardware. Intel vGPU is closer to supported, but does not currently have an option for controlling the physical display output. There is QEMU "display" support though, which can make local graphics fairly efficient, but the output is still controlled by the host drivers. Thanks, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
