Subject: Re: [BUG] e1000 fails on 2.4.26+bk with CONFIG_SMP=y
From: Chris Croswhite <csc@cadence.com>
Reply-To: csc@cadence.com
To: joe.korty@ccur.com
Cc: Willy Tarreau <w@w.ods.org>, cramerj@intel.com, scott.feldman@intel.com,
       linux-kernel@vger.kernel.org
In-Reply-To: <20040419214247.GA5273@tsunami.ccur.com>
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	 <20040417072455.GD596@alpha.home.local>
	 <20040419165425.GA3988@tsunami.ccur.com>
	 <20040419193930.GA28340@alpha.home.local>
	 <20040419214247.GA5273@tsunami.ccur.com>
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Organization: Cadence Design Systems, Inc
Message-Id: <1082412219.5804.241.camel@d158140025182.Cadence.COM>
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Date: Mon, 19 Apr 2004 15:03:39 -0700
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FYI, using the dual 85540 board w/e1000 works fine on a quad SMP w/APIC
support.

However, if I try to bond, I get immediate detonation.


On Mon, 2004-04-19 at 14:42, Joe Korty wrote:
> On Mon, Apr 19, 2004 at 09:39:30PM +0200, Willy Tarreau wrote:
> > On Mon, Apr 19, 2004 at 12:54:25PM -0400, Joe Korty wrote:
> >> 
> >> Uniprocessor 2.4.26 works fine.
> >> Uniprocessor 2.4.26 + local apic works fine.
> >> Uniprocessor 2.4.26 + local apic + io apic fails.
> > 
> > interesting. Unfortunately, I didn't have time to try on the machine I told
> > you about last day. But right here, I have a dual athlon communicating
> > with an alpha, both with e1000 (544) in 2.4.26. Since there's a PCI
> > bridge on your quad, I wonder if the IOAPIC doesn't trigger an interrupt
> > routing problem with bridges. Are all the ports unusable or do some of
> > them work reliably in APIC mode ?
> 
> I just verified that the Quad Ethernet board works with 2.6.5 SMP, so it
> is unlikely to be a bridge or other hardware problem.
> 
> For 2.4.26, the Dell 650 has an Intel 82545EM Gigabit Ethernet Controller
> soldered in, which also uses the e1000 driver, and that works fine, so
> we know the 2.4.26 e1000 driver works with some of these Intel chips.
> 
> When the Quad board works, it negotiates down to 10 MBits/sec Half Duplex.
> Not sure yet if this is what it is supposed to be doing in our environment.
> 
> Regards,
> Joe
> 
> PS: do you CC'ed Intel guys have some insights or data for us?
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