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c4e1638148
For non pci express passthrough additional addresses are reserved. For pcie passthrough pcie root ports are needed (unless guest is like windows 7). The first 4 pcie root ports are defined by default in the pve-q35*.cfg files. If more than 4 pcie devices are passed through the needed root ports are created on demand. This helps to keep live migration possible without adding a new pve-q35*.cfg file. For the windows 7 like guests additional addresses are reserved as well. Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>