Re: [libvirt] [PATCH 02/13] qemu: always permit PCI devices to be manually assigned to a PCIe bus

When support for the pcie-root and dmi-to-pci-bridge buses on a Q35 machinetype was added, I was concerned that even though qemu at the time allowed plugging a PCI device into a PCIe port, that it might not be supported in the future. To prevent painful backtracking in the possible future where this happened, I disallowed such connections except in a few specific cases requested by qemu developers (indicated in the code with the flag VIR_PCI_CONNEcT_TYPE_EITHER_IF_CONFIG).

Now that a couple years have passed, there is a clear message from qemu that there is no danger in allowing PCI devices to be plugged into PCIe ports. This patch eliminates VIR_PCI_CONNECT_TYPE_EITHER_IF_CONFIG and changes the code to always allow PCI->PCIe or PCIe->PCI connection *when the PCI address is specified in the config. (For newly added devices that haven't yet been given a PCI address, the auto-placement still prefers using the correct type of bus). --- docs/formatdomain.html.in | 18 +++++++++++------- src/conf/domain_addr.c | 18 +++++++++++------- src/conf/domain_addr.h | 16 ++++++++++------ src/qemu/qemu_command.c | 6 ++---- 4 files changed, 34 insertions(+), 24 deletions(-)