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Laine Stump
3801831cdf
This patch addresses: https://bugzilla.redhat.com/show_bug.cgi?id=781562 Along with the "rombar" option that controls whether or not a boot rom is made visible to the guest, qemu also has a "romfile" option that allows specifying a binary file to present as the ROM BIOS of any emulated or passthrough PCI device. This patch adds support for specifying romfile to both passthrough PCI devices, and emulated network devices that attach to the guest's PCI bus (just about everything other than ne2k_isa). One example of the usefulness of this option is described in the bugzilla report: 82576 sriov network adapters don't provide a ROM BIOS for the cards virtual functions (VF), but an image of such a ROM is available, and with this ROM visible to the guest, it can PXE boot. In libvirt's xml, the new option is configured like this: <hostdev> ... <rom file='/etc/fake/boot.bin'/> ... </hostdev (similarly for <interface>).
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>