Re: [Xen-users] crash e100 amd64 >=4GB RAM

[Daniel Schmitt <daniel.schmitt@xxxxxxx>]

Am 27.05.2010 07:32, schrieb Claudiu Curcă:
> On Thu, May 27, 2010 at 8:19 AM, Daniel Schmitt<daniel.schmitt@xxxxxxx>  wrote:
> > Hello list,
> >
> > I'm using gentoo Linux with xen 3.4.1 and linux kernel 2.6.30 fine till
> > now where I need more RAM. I used 2GB and now I want to use 4GB.
> > But upping eth0 (4-port e100 Quad Port Device by Compaq) crashed the
> > kernel. I tried xen 4.0.0 with linux kernel 2.6.32-r1 from
> > http://code.google.com/p/gentoo-xen-kernel/downloads/list same error.
> > Using swiotlb=force or swiotlb=128,force or iommu=off did not succeed
> > even. The board has a tg3 gigabit NIC eth4, too. Upping this device does
> > not crash the kernel.
> > It must have something to do with e100 driver.
> > The machine where the crash happens is a Dell PowerEdge 840. It uses Intel
> > Core2Duo (dual core).
> >
> > Can anyone help?
> >
> > Here is some crash information:
> > ------------------------
> > kernel BUG at lib/swiotlb-xen.c:454!
> > [<ffffffff80481120>] e100_rx_alloc_skb+0x190/0x230
> > ...
> > RIP [<ffffffff803c56a6>] swiotlb_sync_single_for_device+0x96/0xe0
> > Segmentation fault
> > ------------------------
> Hello,
>
> Does it happen with a non-xen (sys-kernel/gentoo-sources) kernel too?
> (linux-2.6.32-gentoo-r7 is the latest, I believe).
> If it does, then this could surely be a problem in the e100 driver and
> should be reported upstream.
I tried now with grml 2010-04 amd64 version.
It does not hang. Upping eth0 works. Network traffic is received but not 
answered.
ARP Replies are sent to the wrong IP if an ARP Request is received. I 
analysed this with tcpdump.
Beside this, no packet is sent! If I try to ping another station, the TX 
packets counter does not get increased.
strange ...

Seems like e100 is broken with amd64?
Perhaps I manage to use plain old eepro100 by D. Becker.

Daniel

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