On Sun, Jun 27, 2010 at 3:09 PM, Stefan Hajnoczi <stefa...@gmail.com> wrote: > On Sat, Jun 26, 2010 at 5:33 AM, Vagrant Cascadian > <vagrant+g...@freegeek.org> wrote: >> i was testing out gPXE today using qemu on a debian system (0.12.4+dfsg-2), >> with gPXE roms built from 1.0.1-rc1, and i noticed an issue when using the >> virtio network driver. >> >> if there was only one virtio network card, gPXE would work fine. >> >> if i configured qemu to use two virtio network cards, gPXE would very briefly >> display the following message and reboot: >> >> I/O address 0x0000c020, IRQ #11 >> MAC address 52:54:00:12:34:56 >> WARNING: Using legacy NIC wrapper on 52:54:00:12:34:56 >> >> with two cards, it doesn't get as far as displaying: >> >> gPXE 1.0.1-rc1 -- Open Source Boot Firmware -- http://etherboot.org >> Features: AoE HTTP iSCSI DNS TFTP bzImage COMBOOT ELF Multiboot NBI PXE >> PXEXT >> >> other network cards i tested e1000, pcnet, ne2k_pci seemed to handle multiple >> network cards without problem. > > Thanks for reporting this issue. The virtio-net driver was originally > written for legacy Etherboot. The code still works in gPXE but isn't > able to take advantage of gPXE's native driver API. > > What's more is that the virtio-net driver is keeping global state - it > is not possible to have multiple instances of the driver active > simultaneously, as you discovered. > > The solution requires restructuring the virtio-net driver to eliminate > global state. It would make sense to update the driver to use gPXE's > native API at the same time. > > If you file a bug for this issue at http://support.etherboot.org/ you > will be kept up to date when this issue is resolved.
I am rewriting virtio-net as a native driver that supports multiple NICs in a VM. Will post patches and test gPXE images soon. Stefan _______________________________________________ gPXE mailing list gPXE@etherboot.org http://etherboot.org/mailman/listinfo/gpxe
