On 01/07/2012 02:21 PM, Gordon Messmer wrote:
I'm certain that qemu-kvm loads both /usr/share/qemu-kvm/vgabios-cirrus.bin and /var/lib/libvirt/images/Radeon3470.rom, which seems correct. However, in the guest, both the virtual VGA card and the real PCI one have the same ROM, from vgabios-cirrus.bin.
I've learned slightly more. First, I built a version of seabios that never calls vga_setup.
Once I disabled vga_setup, I was able to boot my guest with no emulated VGA device. Now, the PCI device passed through no longer has the Cirrus ROM. Instead it has the etherboot rom attached to the virtio ethernet device. When I remove that device and boot the guest, the VGA card has no ROM at all.
I get the same results on qemu-kvm-0.12.1.2 from CentOS 6.2 and with qemu-0.15.0 from Fedora 16, rebuilt for CentOS.
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