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[Qemu-ppc] [RFC for-2.10 0/3] Rework handling of PCI/PCIe "hybrid" devic
[Qemu-ppc] [RFC for-2.10 0/3] Rework handling of PCI/PCIe "hybrid" devices
Tue, 28 Mar 2017 13:16:48 +1100
A couple of devices - virtio-pci and XHCI - can present themselves to
the guest as either PCI or PCIe devices depending on how they're
attached. However, the logic is a little different between the two
devices. In addition the logic in virtio makes it difficult to put a
PCIe virtio device into a "pseries" guest because of the unusual way
the paravirtualized PCI bus works there.
This series makes the logic more consistent, and allows per-machine
overrides to address that.
Currently patch 3/3 shows a non-obvious side effect of this change. A
PCIe virtio device is, by default, modern mode only, but the qtest
logic doesn't handle modern-only virtio devices correctly. We work
around this by explicitly adding disable-legacy=off to the testcases.
It would probably be better to update libqos so that it can handle
modern virtio devices.
David Gibson (3):
pci/pcie: Make a consistent helper for switching PCI/PCIe "hybrid"
pci: Allow host bridges to override PCI/PCIe hybrid device behaviour
pseries: Allow PCIe virtio and XHCI on pseries machine type
hw/pci/pci.c | 14 ++++++++++++++
hw/ppc/spapr_pci.c | 9 +++++++++
hw/usb/hcd-xhci.c | 2 +-
hw/virtio/virtio-pci.c | 3 +--
include/hw/pci/pci.h | 1 +
include/hw/pci/pci_host.h | 1 +
tests/virtio-9p-test.c | 2 +-
tests/virtio-blk-test.c | 4 ++--
tests/virtio-net-test.c | 2 +-
tests/virtio-scsi-test.c | 2 +-
10 files changed, 32 insertions(+), 8 deletions(-)
- [Qemu-ppc] [RFC for-2.10 0/3] Rework handling of PCI/PCIe "hybrid" devices,
David Gibson <=