Public bug reported:
-- Problem Description --
with kernel 4.8.0-11-generic We can not do pci passthru.
virsh start --console ltc-fire1-vm1-ubuntu-16.10
error: Failed to start domain ltc-fire1-vm1-ubuntu-16.10
error: unsupported configuration: host doesn't support VFIO PCI passthrough
dpkg --list | grep 4.8.0-11
ii linux-headers-4.8.0-11 4.8.0-11.12 all Header files related to Linux kernel
version 4.8.0
ii linux-headers-4.8.0-11-generic 4.8.0-11.12 ppc64el Linux kernel headers for
version 4.8.0 on PowerPC 64el SMP
ii linux-image-4.8.0-11-generic 4.8.0-11.12 ppc64el Linux kernel image for
version 4.8.0 on PowerPC 64el SMP
ii linux-image-extra-4.8.0-11-generic 4.8.0-11.12 ppc64el Linux kernel extra
modules for version 4.8.0 on PowerPC 64el SMP
ii linux-tools-4.8.0-11 4.8.0-11.12 ppc64el Linux kernel version specific tools
for version 4.8.0-11
ii linux-tools-4.8.0-11-generic 4.8.0-11.12 ppc64el Linux kernel version
specific tools for version 4.8.0-11
but it looks like VFIO is not enabled so I can not do any pci passthru not even
any card.
root@ltc-fire1:/boot# grep VFIO config-4.8.0-11-generic
root@ltc-fire1:/boot# grep VFIO config-4.6.0-9-generic
# CONFIG_VFIO_IOMMU_TYPE1 is not set
CONFIG_VFIO_IOMMU_SPAPR_TCE=m
CONFIG_VFIO_SPAPR_EEH=m
CONFIG_VFIO_VIRQFD=m
CONFIG_VFIO=m
CONFIG_VFIO_NOIOMMU=y
CONFIG_VFIO_PCI=m
CONFIG_VFIO_PCI_MMAP=y
CONFIG_VFIO_PCI_INTX=y
---uname output---
Linux ltc-fire1 4.8.0-11-generic #12-Ubuntu SMP Sat Sep 17 19:58:16 UTC 2016
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = P8
---Steps to Reproduce---
Just try to do pci passthru to a device
virsh start --console ltc-fire1-vm1-ubuntu-16.10
On Tue, Sep 20, 2016 at 7:13 AM, Thierry fa...@linux.vnet.ibm.com
<thie...@linux.vnet.ibm.com> wrote:
Hello Lean,
We get a question from our IO testing group regarding kernel 4.8
config file.
Currently we have the following VFIO variables not set in the kernel
so we can not do any pci passthru not even any card testing
root@ltc-fire1:/boot# grep VFIO config-4.8.0-11-generic
when we expected
root@ltc-fire1:/boot# grep VFIO config-4.6.0-9-generic
# CONFIG_VFIO_IOMMU_TYPE1 is not set
CONFIG_VFIO_IOMMU_SPAPR_TCE=m
CONFIG_VFIO_SPAPR_EEH=m
CONFIG_VFIO_VIRQFD=m
CONFIG_VFIO=m
CONFIG_VFIO_NOIOMMU=y
CONFIG_VFIO_PCI=m
CONFIG_VFIO_PCI_MMAP=y
CONFIG_VFIO_PCI_INTX=y
Do you expect them to change it for the 16.10 relase ?
This is indeed an error if these were inadvertently disabled from the previous
release. I'll have my team take a look and see about making sure these are
re-enabled before the final 16.10 release.
Thanks,
Leann
This appears to be something broken in upstream. The only dependency for
CONFIG_VFIO is CONFIG_IOMMU_API. The Ubuntu config has
CONFIG_IOMMU_API=y for all arches, yet I cannot get powerpc/ppc64el to
even present the VFIO option.
Still digging...
rtg
--
Tim Gardner tim.gard...@canonical.com
Alright, I figured it out. VFIO will be enabled for ppc64el in linux
Ubuntu-4.8.0-13.14
rtg
--
Tim Gardner tim.gard...@canonical.com
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-146533 severity-critical
targetmilestone-inin1610
** Tags added: architecture-ppc64le bugnameltc-146533 severity-critical
targetmilestone-inin1610
** Changed in: ubuntu
Assignee: (unassigned) => Taco Screen team (taco-screen-team)
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1625781
Title:
Ubuntu 16.10 KVM: Can not do pci passthru with kernel 4.8.0-11
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