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

On Mon, 2015-01-05 at 14:37 +0100, mikkel@xxxxxxxxxx wrote:
> Hi all,
> I have been running xen 3.4.1

You don't really mean 3.4.1 (released in 2009, 6 years ago) do you?
Given your use of xl I suspect you probably meant 4.3.1.

>  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)"

Is the module loaded and does /sys/modules/xen-pciback exist? Does the
parameters directory under there contain a hide file with the expected
> 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?

xl -vvv pci-assignable-add might print what the old driver was, or you
can look for the driver symlink in the device's sysfs directory.


> Googling has unfortunately now given me any new insight.
> cheers for any input
> Mik
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