[okl4-developer] Question on device acess control.

Jean-Christophe DUBOIS jcd at tribudubois.net
Fri Jul 18 22:27:37 EST 2008


 Just a quick question:  

 In a previous thread, Geoffrey Lee wrote:
 So now I am wondering if there is a way to prevent OKLINUX to "see"
some hardware. Let's say I have a plateform with 2 identical PCI
ethernet boards and I want Linux to only handle one of them. Actually,
I'd like to make sure Linux doesn't even see the second board because
I want to assign it to another partition.  

 How will this work?  

 Linux could be redoing the PCI enumeration/configuration. I guess
this should be disabled and we should rely on the boot loader/BIOS to
do the correct initialisation.  

 So now Linux would just walk the PCI tree but is it possible to
prevent it from seeing the second Ethernet board.  

 If it is not possible to prevent this is it possible to prevent
Linux from "writing" to this Ethernet board while still allowing
another partition to get to it?  

 Is there another way to achieve this device access control for
"legacy OSes"?  

 thanks  

 JC   

   
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