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RE: [Xen-devel] adding device driver kernel module for xen/linux

  • To: "Fajar A. Nugraha" <fajar@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
  • Date: Tue, 17 Jan 2006 12:10:14 -0000
  • Delivery-date: Tue, 17 Jan 2006 12:17:53 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcYbKqw/6DK0IIdvQa2Eny/5bQ5wQQANA/SA
  • Thread-topic: [Xen-devel] adding device driver kernel module for xen/linux

> I wanted to add a kernel module (bcm5700, device driver for 
> Broadcom network adapter) to linux 2.6, xen-3.0.0. Is it 
> possible to use the kernel module (source) as-is, without 
> modifications, or do I need to edit the module source code to 
> be Xen-specific?

The code should not need to be modified.
> I noticed that the files tg3.c and tg3.h on linux-2.6.12-xen 
> is the same as the one on pristine-linux-2.6.12, so 
> presumably, no change is needed. 
> However, using bcm5700 module on linux-2.6.12-xen kernel 
> doesn't work, while using bcm5700 on native linux (on the 
> same machine) works.

The tg3 driver certainly works for me. When you say native, do you mean
2.6.12 native? Perhaps you have a very new version of the chip that
needs a more recent driver?

Perhaps more likely, you may have an interrupt routeing issue. Does the
NIC appear to be using the same interrupt number in both the native and
xen cases?


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