[dpdk-users] DPDK build failed in virtual machine

Tom Barbette barbette at kth.se
Sat Dec 29 10:42:25 CET 2018


?You can also double check by doing cat /proc/cpuinfo in the guest. But the message is clear, your guest CPU is x86 (32 bit).


Tom


________________________________
De : Murali Krishna <murali.krishna at broadcom.com>
Envoyé : vendredi 28 décembre 2018 11:43
À : wuzhouhui
Cc : Tom Barbette; users at dpdk.org
Objet : Re: [dpdk-users] DPDK build failed in virtual machine

can you try compiling dpdk after setting 'Copy host CPU configuation' option under CPU settings of that VM in virt-manager.

Regards,
Murali

On Fri, Dec 28, 2018 at 2:57 PM wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn<mailto:wuzhouhui14 at mails.ucas.ac.cn>> wrote:

> -----Original Messages-----
> From: "Tom Barbette" <barbette at kth.se<mailto:barbette at kth.se>>
> Sent Time: 2018-12-27 18:20:30 (Thursday)
> To: wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn<mailto:wuzhouhui14 at mails.ucas.ac.cn>>, "users at dpdk.org<mailto:users at dpdk.org>" <users at dpdk.org<mailto:users at dpdk.org>>
> Cc:
> Subject: RE: [dpdk-users] DPDK build failed in virtual machine
>
> Hi,
>
> By default DPDK build for the current CPU.
>
> I guess in your virtual machine configuration you enabled emulation of a CPU instead of CPU passthrough. This is the default of libvirt I think. The default emulated CPU has no fancy insturctions by default, and is, it seems from your error log, set in 32bit mode.
>

What do you mean "set in 32bit mode"? The arch of virtual machine is x86_64, so the cpu should
be in 64 bit mode.

Thanks.
Wu

> Tom
>
> ________________________________________
> De : users <users-bounces at dpdk.org<mailto:users-bounces at dpdk.org>> de la part de wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn<mailto:wuzhouhui14 at mails.ucas.ac.cn>>
> Envoyé : lundi 24 décembre 2018 03:51
> À : users at dpdk.org<mailto:users at dpdk.org>
> Objet : [dpdk-users] DPDK build failed in virtual machine
>
> Hi,
>
> A naive question, but I couldn't find any clue when searching Internet.
>
> When I build DPDK in a CentOS-6.3 virtual machine, I got some errors:
>
> [wzh at CentOS6-compiler dpdk-stable-18.05.1]$ make config T=x86_64-native-linuxapp-gcc
> Configuration done using x86_64-native-linuxapp-gcc
> [wzh at CentOS6-compiler dpdk-stable-18.05.1]$ make
> cc1: error: CPU you selected does not support x86-64 instruction set
> == Build lib
> cc1: error: CPU you selected does not support x86-64 instruction set
> == Build lib/librte_compat
> cc1: error: CPU you selected does not support x86-64 instruction set
>   SYMLINK-FILE include/rte_compat.h
> == Build lib/librte_eal
> cc1: error: CPU you selected does not support x86-64 instruction set
> ^Cmake[2]: *** [librte_eal] Interrupt
> make[1]: *** [lib] Interrupt
> make: *** [all] Interrupt
>
> [wzh at CentOS6-compiler dpdk-stable-18.05.1]$ gcc --version
> gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)
> Copyright (C) 2010 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
> But build in host (CentOS-6.3) seems fine. Does it means that DPDP cannot be
> build in virtual machine?
>
> Thanks.


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