[patch 1/5] Staging: VME Framework for the Linux Kernel

Martyn Welch martyn.welch at gefanuc.com
Wed Aug 12 09:59:13 UTC 2009


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.
>   


-- 
Martyn Welch MEng MPhil MIET (Principal Software Engineer)   T:+44(0)1327322748
GE Fanuc Intelligent Platforms Ltd,        |Registered in England and Wales
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