On Wed, 2010-08-11 at 13:17 +0100, Daniel P. Berrange wrote: > On Wed, Aug 11, 2010 at 12:20:57PM +0200, Daniel Veillard wrote: > > On Sun, Aug 08, 2010 at 06:19:09PM +0200, Martin Kraus wrote: > > > Hello. I'm using debian squeeze with libvirt and kvm and I need to load a > > > newer version of seabios into qemu. I'd like to do it without overwriting > > > seabios in the debian package because that might be overwritten on the next > > > update. I hopend that the <loader> directive in the config would work but it > > > doesn't. > > > > As far as I know, the BIOS used by QEmu is completely hidden from > > libvirt (this can actually be a problem as some corner cases of virtio > > boot support are dependant on the seabios version), so unfortunately > > there is nothing which can be done at the libvirt level I think, > > I believe there is a command line parameter that could let libvirt point > QEMU at a different bios, but it certainly isn't part of libvirt yet, > and I've not tried how it works > You can fudge this by using a shell script as the "emulator", e.g. <emulator>/path/to/start.sh</emulator> For my use case I had the following requirements, which are working successfully in the attached start.sh scirpt: - supply smbios type 0 and 1 files - supply an additional ACPI table - use a customized rebuilt seabios bin file For the first req. you must not allow the -uuid arg to be passed or it won't allow the smbios to be applied For the second, you must trim the apci header data from a binary acpi, because that data is given in the command line option. For the third, the path cannot be specified, so the file must be in /usr/share/kvm directory and path must not be given. Attached is my start.sh, you must correct the details as required for your use case.