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elbarna
Asked: 2022-01-01 06:33:32 +0800 CST

There is a way to pass the option " pci=[’00:...,rdm_policy=relaxed’] " to libvirt?

  • 772

I can run (successfully) a xen virtual machine use the classical method with xl

xl create -f myvm.xenxl.cfg

I know also how to convert from xl format to libvirt xml

virsh -c xen:///system domxml-from-native xen-xl myvm.xenxl.cfg > myvm.xml

What is the problem? I had to pass a pci device to xen machine, but this work ONLY with this option

pci = [ "0000:08:04.0,rdm_policy=relaxed" ]

when I convert to xml it generate this for the pci device

  <hostdev mode='subsystem' type='pci' managed='no'>
      <driver name='xen'/>
      <source>
        <address domain='0x0000' bus='0x08' slot='0x04' function='0x0'/>
      </source>
    </hostdev>

as you can se the "rdm_policy=relaxed" is ignored so if I start with libvirt generate this error

(XEN) [VT-D] It's disallowed to assign 0000:08:04.0 with shared RMRR at f1ffd000 for Dom3.
(XEN) d3: assign (0000:08:04.0) failed (-1)

my question is: no way to pass the rdm_policy to libvirt?

xen libvirt

0 Answers