On 09/27/2012 07:22 AM, Martin Wolf wrote: > hello, > > im using kvm with virt-manager and i really like the interface you provide. > but i would like to know if there is a way to supply a romfile to a passed through > device like shown here. > > http://www.linux-kvm.org/page/VGA_device_assignment > *VBIOS ROM access* > To re-run the POST procedures of the assigned adapter inside the guest, the > proper VBIOS ROM image has to be used. However, when passing through the > primary adapter of the host, Linux provides only access to the shadowed > version of the VBIOS which may differ from the pre-POST version (due to > modification applied during POST). This has be been observed with NVDIA Quadro > adapters. A workaround is to retrieve the VBIOS from the adapter while it is > in secondary mode and use this saved image (-device > pci-assign,...,romfile=...). But even that may fail, either due to problems of > the host chipset or BIOS (host kernel complains about unmappable ROM BAR). > > thank you in advance > virt-manager doesn't support that option. You can set it with libvirt though, use virsh edit to add something like this to your <hostdev> block: <rom file='/etc/fake/bootrom.bin'/> How to use virsh edit: http://wiki.libvirt.org/page/FAQ#What_is_the_.27virsh_edit.27_command_and_how_do_I_use_it.3F - Cole
