Re: intel x540-at2

[Jose Gavine Cueto <pepedocs-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Hi Venky,


On Fri, Jan 3, 2014 at 9:43 PM, Venkatesan, Venky <
venky.venkatesan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:

> Pepe ,
>
> Was the DPDK library compiled on a different machine and the used in the
> VM? It looks like it has been compiled for native AVX (hence the
> vzeroupper). Could you dump cpuinfo in the VM and see what instruction set
> the VM supports?
>

Yes, it was compiled in a different machine and it was used in my VM.  I
don't have cpuinfo prog as of the moment so I've pasted my VM's cpuinfo
file instead.

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 58
model name      : Intel(R) Core(TM) i5-3340M CPU @ 2.70GHz
stepping        : 9
cpu MHz         : 2658.957
cache size      : 6144 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc
rep_good nopl pni monitor ssse3 lahf_lm
bogomips        : 5317.91
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

 It seems that there is no avx here, does this mean this doesn't support
avx instructions ?

Thanks,
Pepe

>
> -Venky
>
> Sent from my iPhone
>
> > On Jan 3, 2014, at 2:32 AM, "Jose Gavine Cueto" <pepedocs-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
> >
> > I haven't added it yet, because as of the moment I do not have an access
> to
> > the built DPDK library I was using.  I was just linking it with my DPDK
> > application.
> >
> > I tried to debug it with GDB and disassembled it, the invalid instruction
> > was "vzeroupper" which occurs at rte_eal_init, somewhere when
> initializing
> > pthreads.
> >
> > Ok, I'll to debug more and get more information.
> >
> > Thanks again,
> > Pepe
> >
> >
> > On Fri, Jan 3, 2014 at 6:26 PM, Thomas Monjalon
> > <thomas.monjalon-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>wrote:
> >
> >> 03/01/2014 11:09, Jose Gavine Cueto :
> >>> I am running a DPDK application in a guest VM which uses one VF.  This
> VM
> >>> runs on top of the host that has an x540-at2 NIC and uses the ixgbe
> >> driver.
> >>> The issue was that every time I run the DPDK application in the VM it
> >>> errors an invalid instruction and stops there.
> >>
> >> First, have you added x540-at2 in ixgbe_type.h, ixgbe_api.c and
> >> rte_pci_dev_ids.h ?
> >> What is the invalid instruction ? Have you tried to debug it ?
> >>
> >> I don't know this NIC so I'm afraid you should debug it by yourself.
> >>
> >> Please, keep us informed if you make it working.
> >> --
> >> Thomas
> >
> >
> >
> > --
> > To stop learning is like to stop loving.
>



-- 
To stop learning is like to stop loving.