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Re: [Qemu-discuss] e1000 / pc ~ e1000e / q35


From: Pascal
Subject: Re: [Qemu-discuss] e1000 / pc ~ e1000e / q35
Date: Mon, 28 May 2018 15:53:31 +0200

the guests are started as follows :

/usr/bin/qemu-system-x86_64 -enable-kvm -m 2048 -machine {q35|pc} -usb -hda
{arch1|arch2}.img

regards.

2018-05-28 15:32 GMT+02:00 Pascal <address@hidden>:

> hello,
>
> I come back to you with this subject that I opened to bring some
> clarifications, because my problem remains and also because nobody seems
> confronted with it.
>
> my physical host is an ArchLinux with 4.14.40-1-lts kernel and Qemu 2.12.0.
>
> in my first virtualisation case, my virtual host - my guest - is an
> ArchLinux with 4.9.36-1-lts kernel (e1000e ver. 3.2.6-k) : everything works
> normally when I request the assignment of a network address with dhcpcd
> (after a few seconds, my guest gets the 10.0.2.15 intended address).
>
> in my second virtualisation case, my guest is an ArchLinux with
> 4.14.40-1-lts kernel (e1000e ver. 3.2.6-k) : no carrier is detected and
> therefore no address is assigned to the enp0s2 network card.
>
> this problem does not appear if I add in both cases the parameter *"-machine
> pc"* (which forces the use of the module e1000/ens3 instead of the module
> e1000e/enp0s2).
>
> I think the problem would rather come from the virtualized 4.14.40-1-lts
> kernel side because I do not meet it on my physical host which also uses
> the e1000e module...
>
> does anyone have an idea or a lead ?
>
> regards, lacsaP.
>
> 2018-05-11 15:39 GMT+02:00 Pascal <address@hidden>:
>
>> hi,
>>
>> when I run qemu with machine pc, my virtual network card "runs", but not
>> when I run it with machine q35.
>>
>> in the first case (pc), module e1000 is loaded and dhcpcd on ens3 is ok (
>> 10.0.2.15/24).
>>
>> in the second case (q35), module e1000e is loaded and dhcpcd on enp0s2 is
>> ko (waiting for carrier/timed out).
>>
>> does anyone have a lead ?
>>
>> my host is ArchLinux 4.14.40-1-lts and my guest is ArchLinux
>> 4.14.32-1-lts.
>>
>> regards.
>>
>
>


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