----- Original Message ----- From: "Avi Kivity" <avi@xxxxxxxxxx> To: "Alex Jia" <ajia@xxxxxxxxxx> Cc: "Andrew Holway" <a.holway@xxxxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx Sent: Monday, September 3, 2012 9:27:08 PM Subject: Re: [libvirt-users] vm pxe fail On 08/31/2012 05:37 PM, Alex Jia wrote: > Hi Andrew, > Great, BTW, in fact, you may pxe boot via VF of Intel82576, however, Intel82576 SR-IOV 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, you need to configure guest XML like this: > > <hostdev mode='subsystem' type='pci' managed='yes'> > <source> > <address bus='XX' slot='XX' function='XX'/> > </source> > <boot order='1'/> > <rom bar='on' file='/xxxx/ipxe-808610ca.rom'/> > </hostdev> > > You need to build a ipxe-808610ca.rom by yourself, if you're interested in this, > please refer to http://ipxe.org/. Is there a way to automate this? Perhaps a database matching PCI IDs and ipxe .roms, which qemu could consult? Hi Avi, Good question, I haven't try this via qemu yet, from libvirt POV, basically, we may filter and parse 'lspci' or 'virsh nodedev-list --tree' output to get a bus, slot and function number then add them into above guest XML, WRT above 'ipxe-808610ca.rom' file, we may directly 'git clone git://git.ipxe.org/ipxe.git' then compile it and generate a .rom file such as 82576.rom or use a vendor+product id as a rom name if you like. Regards, Alex -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
