Re: [Xen-users] pciback.hide equivalent boot arg for PVOPS xen/master kernel?

[Rick McNeal <rick.mcneal@xxxxxxx>]

On 12-Oct-2009, at 12:21 PM, Bruce Edge wrote:

> On Mon, Oct 12, 2009 at 11:04 AM, McNeal, Rick <Rick.McNeal@xxxxxxx>  
> wrote:
> > Have you used the /sys/bus/pci/drivers/pciback to do the same thing?
> Here's what I tried:
>
> These are devices I wanted to pass through:
>
> lspci -n | grep 07:00
>
> 07:00.0 0c04: 11f8:8032 (rev 05)
> 07:00.1 0c04: 11f8:8032 (rev 05)
> 07:00.2 0c04: 11f8:8032 (rev 05)
> 07:00.3 0c04: 11f8:8032 (rev 05)
>
> I started following the instructions for the pv_ops VT_d here:
> http://wiki.xensource.com/xenwiki/VTdHowTo
>
> 0 #> echo "11f8 8032" > /sys/bus/pci/drivers/pci-stub/new_id
> 0 #> echo "0000:17:00.0" > /sys/bus/pci/devices/0000:17:00.0/driver/ 
> unbind
> 0 #> echo "0000:17:00.0" > /sys/bus/pci/drivers/pci-stub/bind
On my system I would do the unbind first and then use new_slot instead  
of new_id. For example:
echo -n 0000:82:00.0 > /sys/bus/pci/drivers/pciback/new_slot
echo -n 0000:82:00.0 > /sys/bus/pci/drivers/pciback/bind

My current configuration doesn't require the unbind because no other  
driver is attempting to claim the device. I also noticed you're using  
pci-stub and not pciback. On my machine it doesn't have pci-stub. I'm  
currently running an older version of Xen than what I believe is  
current which might explain why thing are different and possibly  
working for me.
> Then, when I ran
>
> xm pci-attach dpm 0000:17:00.0 17      ( is that right? )
>
>
> the console prints:
>
> (XEN) [VT-D]iommu.c:1289:d0 domain_context_unmap:PCIe: bdf = 17:0.0
> (XEN) [VT-D]iommu.c:1175:d0 domain_context_mapping:PCIe: bdf = 17:0.0
> (XEN) [VT-D]iommu.c:1289:d0 domain_context_unmap:PCIe: bdf = 17:0.0
> (XEN) [VT-D]iommu.c:1175:d0 domain_context_mapping:PCIe: bdf = 17:0.0
>
> and the domU reboots.
>
> -Bruce
>
> > ----
> > Rick
> >
> > Twenty years from now you will be more disappointed by the things you
> > didn't do than by the ones you did do. So throw off the bowline. Sail
> > away from the safe harbor. Catch the trade winds in your sails.
> > Explore. Dream. Discover. -Mark Twain
> >
> > On Oct 12, 2009, at 11:26 AM, "Bruce Edge" <bruce.edge@xxxxxxxxx>  
> > wrote:
> > > I used to be able to do this with the 2.6.30.3 dom0:
> > > pciback.hide=(07:00.0)(07:00.1)(07:00.2)(07:00.3)(14:00.0)
> > >
> > > Now I get:
> > > Unknown boot option
> > > `pciback.hide=(07:00.0)(07:00.1)(07:00.2)(07:00.3)(14:00.0)':  
> > > ignoring
> > > Is there an equivalent boot arg for the PVOPS kernel for this?
> > >
> > > Where are the docs for what boot args this dom0 kernel supports?
> > >
> > > -Bruce
> > >
> > > _______________________________________________
> > > Xen-users mailing list
> > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-users
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----
Rick McNeal
rick.mcneal@xxxxxxx

"An armed society is a polite society. Manners are good when one may  
have to back up his acts with his  life."  -- Robert A.  Heinlein

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