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xen-users
RE: [Xen-users] CentOS and pciback
Florian Heigl wrote:
>
> hi,
>
> i wonder if there is anyone on this list who successfully uses pciback
> on CentOS, especially for delegating usb/graphics.
> I already found out they turned it into a module, thereby disabling
> the (safe) grub.conf way of hiding devices. I downloaded and build the
> kernel source SRPM but it's just "a" kernel source, not the Xen
> patched & configured one I hoped for - in that case I'd be done just
> by changing the single option I'm after :)
>
> I opened a bug ( # 2767 ) in their bugzilla, but I'd hope for some
> input from someone who as already dealt with the issue instead of
> waiting 3 months for someone to pick up on the issue :(
>
> I know a few people had this issue but so far found no notes from
> anyone who actually set out to just build a kernel with the single
> option changed :)
I have pciback running on CentOS, here's the trick to get pciback
to grab the devices early in the boot process,
In /etc/modprobe.conf set your pciback options like such:
options pciback hide=(00:1b.0)(00:1d.0)(00:1d.1)
Then make a new initrd preloading the pciback driver before all
others:
# mkinitrd -f --preload=pciback /boot/initrd-$(uname -r).img $(uname -r)
Voila! Now reboot. If you are delegating your primary VGA interface
then make sure to have a serial console setup before hand.
-Ross
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