[Xen-users] PCI passthrough w/o module in kernel

[Paul Muster <paul@xxxxxxxxxx>]

Hi there,

I have a question regarding PCI passthrough without xen-pciback in the 
kernel.
Will it work to add the module to initrd

  # echo xen-pciback >> /etc/initramfs-tools/modules
  # update-initramfs -u -k all

with the well-known parameters in kernel command-line

  # grep pciback /boot/grub/grub.cfg
        module  /vmlinuz-3.2.0-4-686-pae placeholder root=/dev/<root> 
ro  xen-pciback.hide=(02:00.0)
?

I'm not sure how to understand the second sentence on

http://wiki.xen.org/wiki/Assign_Hardware_to_DomU_with_PCIBack_as_module

| If the Dom0 XenLinux kernel is built with pciback as a module,
| attempting to use the kernel command-line parameter pciback.hide
| won't work. This includes loading pciback in an initrd.

If the above described way works, could it be added as a third option?

---

Option 3

Targeted at distributions using initrd like Debian Wheezy.

a) Add the module to initrd

  # echo xen-pciback >> /etc/initramfs-tools/modules
  # update-initramfs -u -k all

b) Use the well-known parameters in kernel command-line

  # grep pciback /boot/grub/grub.cfg
         module  /vmlinuz-3.2.0-4-686-pae placeholder root=/dev/<root> 
ro  xen-pciback.hide=(02:00.0)
---

Thanks & kind regards

Paul

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