netdev - Re: [net-next 02/11] e1000: Adding e1000

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Message-ID: <8813313.EUCIY7NiG3@alaris>
Date:	Mon, 13 Feb 2012 09:24:32 +0100
From:	Michal Kubeček <mkubecek@...e.cz>
To:	"Dave, Tushar N" <tushar.n.dave@...el.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"gospo@...hat.com" <gospo@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>,
	"jbeulich@...e.com" <jbeulich@...e.com>
Subject: Re: [net-next 02/11] e1000: Adding e1000_dump function

On Wednesday 08 of February 2012 18:39EN, Dave, Tushar N wrote:
> How did you fix the problem in e1000e then? I don't see bus_to_virt
> used in any of our Ethernet drivers.

We didn't, yet. I don't understand the memory mapping well enough to 
propose a solution. We have run into this problem when we investigated a 
different issue (repeated Tx hangs without apparent cause) and an 
attempt to dump registers resulted in kernel crash.

                                                        Michal Kubeček

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