Re: Query on IOMMU

[Chris Wright <chrisw@sous-sol.org>]

* Prasad Joshi (P.G.Joshi@student.reading.ac.uk) wrote:
> > From: Chris Wright [chrisw@sous-sol.org]
> > Sent: 21 December 2010 19:29
> > To: Prasad Joshi
> > Cc: Chris Wright; kvm@vger.kernel.org; Tejun Heo
> > Subject: Re: Query on IOMMU
> 
> > * Prasad Joshi (P.G.Joshi@student.reading.ac.uk) wrote:
> >> Besides when I insert the pci_stub module, it emits a messages
> >> [   49.197112] pci-stub: invalid id string ""
> >> I don't know why?
> 
> > It's just broken error message.  The commit b439b1d ("PCI: pci-stub: add
> > pci_stub.ids parameter") created that.  I looked at it very briefly a few
> > weeks ago and didn't see the issue.  It's cosmetic, and not related to
> > the failure you are seeing.
> 
> Is it okay to add a following line in section 4. unbind device from host kernel driver (example PCI device 01:00.0)
> 
> * If the PCI Stub Driver is compiled as module, then load the module using modprobe pci_stub.
> 
> When I compiled the kernel I selected it as a kernel module. As the driver was not loaded, I could not see the entries in /sys file system. I could figure that out after reading few things. It will good to add a note to mention this fact.
> 
> Let me know if I should add it or not.

Yes, that sounds fine.

thanks,
-chris