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xen-ia64-devel
Re: [Xen-devel] PCI backend and slot functions
Le Mercredi 02 Août 2006 15:17, Chris a écrit :
> Tristan Gingold wrote:
> > Currently PCI slot functions are not virtualized. When I hide
> > 0000:06:01.1 it appears as 0000:00:00.1 and there is no function 0 for
> > the slot. This is an issue because on linux/ia64, functions > 0 are not
> > probed if there is no function 0.
> >
> > How is it handled on x86 ?
> >
> > Should I add an option to virtualize slot functions ?
>
> IIUC, when you hide 0000:06:01.1 from dom0 you want that device to
> appear as 0000:06:01.1 to domU. Have you looked at the PCI Backend Mode
> options in the xenolinux configuration? Specifically, look at the
> difference between XEN_PCIDEV_BACKEND_VPCI and XEN_PCIDEV_BACKEND_PASS
> to see if either gives what you want.
Yes both works on ia64.
> I've only tried this on x86, but
> it sounds like what you want, but perhaps there's a bug in the ia64
> implementation (I haven't looked at it yet).
As far as I understand pci backend and frontend work correctly but the pci
cards probing seems to be different to x86.
Thank you for your comment,
Tristan.
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