Hi Anthony, -----Original Message----- From: Anthony PERARD <[email protected]> Sent: 2021年8月19日 22:16 To: Jiamei Xie <[email protected]> Cc: [email protected]; Wei Chen <[email protected]>; nd <[email protected]> Subject: Re: Some questions about virtio-net on Xen x86
On Thu, Aug 19, 2021 at 10:38:49AM +0000, Jiamei Xie wrote: > Hi all, > I tried to run virtio-net on X86 machine according to the Wiki page > https://wiki.xenproject.org/wiki/Virtio_On_Xen. > And I Encountered some confusing problems. > > It seems eth0 is not virtio-net, properly a pv-net. I am really confused. > > I have the following questions: > 1. Does Xen x86 still support virtio-net based on QEMU backend? Well, we don't test it, and the libxl toolstack doesn't really help getting virtio devices. > 2. If yes, is there anything wrong in my guest config file? The wiki state that you should add 'xen_emul_unplug=never' to the guest kernel's command line. (That would be "extra" in your guest.cfg.) I think that will prevent the virtio-net device from been unplug, and so you will see the virtio-net device in the guest. But since libxl create Xen PV device anyway, you'll still have the Xen PV NIC, so two NICs with the same MAC. I hope that help, -- Anthony PERARD Your answer helped me a lot, thank you very much. After adding 'xen_emul_unplug=never', virtio-net can work normally. I can see the virtio net device with lspci command. 00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02) 00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] 00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] 00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03) 00:02.0 Unassigned class [ff80]: XenSource, Inc. Xen Platform Device (rev 01) 00:03.0 SCSI storage controller: Broadcom / LSI 53c895a 00:04.0 VGA compatible controller: Cirrus Logic GD 5446 00:05.0 Ethernet controller: Red Hat, Inc. Virtio network device Best wishes Jiamei Xie
