[Xen-users] pci passthrough toubles in debian xen 3.4.1

[mikkel@xxxxxxxxxx]

Hi all,

I have been running xen 3.4.1 on debian 7.3 for some time and it is stable and working for my purpose.

Every now and then I have to shut the system down, and bring it up again. The latter is my pain, because I have to remember to add my pcie devices manually in regards to passing them through.

The way I hide the devices is via:

/etc/initramfs-tools/modules
  xen-pciback passthrough=1 hide=(00:1d.0)(00:1c.4)(02:00.0)(03:00.0)(03:01.0)

perviously I also entered xen-pciback hide in GRUB, but that made no difference so I stuck to only editing modules

GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT="xen-pciback.hide=(00:1d.0)(00:1c.4)(02:00.0)(03:00.0)(03:01.0)"

I have also black-listed relevant kernel modules which could try to connect

but only using xl will make the devices available for the DomU
$ xl pci-assignable-add (00:1d.0)

I cannot figure out why it does not work for all devices. I am thinking about scripting my way out of the, but maybe I am missing something?

Googling has unfortunately now given me any new insight.

cheers for any input
Mik

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