error: internal error: Process exited prior to exec: libvirt: error :
internal error: Invalid device 0000:09:00.1 iommu_group file
/sys/bus/pci/devices/0000:09:00.1/iommu_group is not a symlink
(intel 82576 quad port nic, assigning itself works fine)
I am trying to get sr-iov working on a platform with 32bit MMIO space
(is that even possible)
So I have added pci-realloc and pci-assign-buses to the kernel command
line, without that I get a "Not enough MMIO resources for SR-IOV" error
even when adding just one VF via sysfs.
I also get an error about not enough space for BAR's in dmesg with or
without the cmdline additions but with the cmdline parms the vf bars
seem to allocate fine.
[ 2.705747] pci 0000:07:00.0: VF(n) BAR0 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR0 for 8 VFs)
[ 2.715887] pci 0000:07:00.0: VF(n) BAR3 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR3 for 8 VFs)
[ 2.726342] pci 0000:07:00.1: VF(n) BAR0 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR0 for 8 VFs)
[ 2.736477] pci 0000:07:00.1: VF(n) BAR3 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR3 for 8 VFs)
[ 2.763896] pci 0000:09:00.0: VF(n) BAR0 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR0 for 8 VFs)
[ 2.774036] pci 0000:09:00.0: VF(n) BAR3 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR3 for 8 VFs)
[ 2.784487] pci 0000:09:00.1: VF(n) BAR0 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR0 for 8 VFs)
[ 2.794621] pci 0000:09:00.1: VF(n) BAR3 space: [mem
0x00000000-0x0001ffff 64bit] (contains BAR3 for 8 VFs)
I get this message and see the VF's in lspci but there isn't any IOMMU
group allocated.
[ 116.175246] igb 0000:07:00.0: 1 VFs allocated
[ 420.514477] igb 0000:09:00.1: 1 VFs allocated
Would disabling devices in the BIOS help?
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