[vfio-users] What does intel VBIOS do in SeaBIOS.bin?

[Laszlo Ersek]

On 10/16/18 05:31, Acewind wrote:
> In hostdev passthrough, rombar=off also works. Is seabios running without
> any vga rom? How can it access the vga hardware?

rombar=off makes QEMU load the PCI expansion ROM into a "genroms" style
fw_cfg file, rather than the PCI device's ROM BAR. SeaBIOS dispatches
the ROM from fw_cfg then. That's how I remember it anyway.

If you truly wish to prevent oprom loading for a "-device", use the
"romfile=''" property.

Thanks
Laszlo