linux-kernel - Re: [patch 1/5] Staging: VME Framework for the Linux Kernel

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Message-ID: <4A829271.6000507@gefanuc.com>
Date:	Wed, 12 Aug 2009 10:59:13 +0100
From:	Martyn Welch <martyn.welch@...anuc.com>
To:	"Emilio G. Cota" <cota@...ap.org>
CC:	Greg K-H <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org,
	Sebastien Dugue <sebastien.dugue@...l.net>
Subject: Re: [patch 1/5] Staging: VME Framework for the Linux Kernel

Emilio G. Cota wrote:
> Martyn Welch wrote:
>   
>> There is a further device situated between the two.
>>     
>>> How do you now protect the registers of this device from
>>>       
>>>> accidental/malicous/buggy behaviour from your board, since
>>>>         
>> this region of the VME bus is now enabled for transfers
>> in the PCI IO Mem space?
>>     
>
> The kernel is not designed to work with buggy hardware--that
> would be insane, we've got more than enough dealing with our
> own bugs. However when there's no other solution (e.g.
> hardware can't be fixed for whatever reason), fixes on a
> per-case basis may be applied.
>
>   
Apart from : not mapping regions of the VME bus that you are not using.

Martyn

> E.
>   


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