Re: [Qemu-devel] [PATCHv2 for-1.4] e1000: unbreak the guest network migration to 1.3

[Stefan Hajnoczi]

On Tue, Feb 26, 2013 at 11:53:28PM +0200, Michael S. Tsirkin wrote:
> QEMU 1.3 does not emulate the link auto negotiation, so if migrate to a
> 1.3 machine during link auto negotiation, the guest link will be set to down.
> Fix this by just disabling auto negotiation for 1.3 and older.
...
> diff --git a/hw/pc_piix.c b/hw/pc_piix.c
> index 0af436c..6de2476 100644
> --- a/hw/pc_piix.c
> +++ b/hw/pc_piix.c
> @@ -520,6 +520,10 @@ static QEMUMachine pc_machine_v0_14 = {
>              .driver   = "AC97",\
>              .property = "use_broken_id",\
>              .value    = stringify(1),\
> +        },{\
> +            .driver   = "e1000",\
> +            .property = "autonegotiation",\
> +            .value    = "off",\
>          }

Did you mean pc_i440fx_machine_v1_4 instead of pc_machine_v0_14?

Stefan