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RE: [Xen-users] Kernel drivers on domU

To: "'kanour'" <xen@xxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Kernel drivers on domU
From: "Steffen Heil" <lists@xxxxxxxxxxxxxxx>
Date: Fri, 1 Sep 2006 14:06:56 +0200
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> I would like to ask if I have to have drivers in kernel for domU.
> For example for Ethernet card. I have them in dom0 but not in domU.
> Is there any rule what should be or does not have to be in 
> kernel for domU.

First basic rule: Keep the kernel as small as possible.
Second basic role: Hardware is typically controlled by dom0.

Hence, you don't need real hardware drivers in domUs.

However if you want to passthrough PCI devices, you will need their drivers
in domU.
Current source tarballs by default build only one kernel anyway, giving you
all drivers anywhere.


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