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Re: [Xen-devel] x86_64 eth0 e1000_clean_tx_irq tx hang

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] x86_64 eth0 e1000_clean_tx_irq tx hang
From: Chris Wright <chrisw@xxxxxxxxxxxx>
Date: Wed, 8 Feb 2006 12:11:50 -0800
Cc: Chris Wright <chrisw@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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* Ian Pratt (m+Ian.Pratt@xxxxxxxxxxxx) wrote:
> Yep, this is the bug I warned y'all about at the summit, but you asked
> for the code to be checked in anyway... 

Hehe, get what you ask for...

> A bug shared is a bug fixed quicker? :-)

Let's hope ;-)

> For us, this only manifests on x86_64, and arrived with the subarch xen
> version of 2.6.12. Extensive inspection of the arch->subarch conversion
> suggests that nothing should have changed, so this is likely a latent
> bug being triggered by slight timing changes.
> It sounds like it's rather easier for you to trigger than it was for us
> -- we had to run xm-test several times to get it to happen. Happy
> hunting, and good luck :-)

It's trivial for me to trigger.  I'll keep poking at it.


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