Hi, > > We could probably wire up ecam (arm/virt style) for pcie support, once > > the acpi support for mictovm finally landed (we need acpi for that > > because otherwise the kernel wouldn't find the pcie bus). > > > > Question is whenever there is a good reason to do so. Why would someone > > prefer microvm with pcie support over q35? > > The usual reasons to use pcie apply to microvm just the same. > E.g.: pass through of pcie devices?
Playground: https://git.kraxel.org/cgit/qemu/log/?h=sirius/microvm-usb Adds support for usb and pcie (use -machine microvm,usb=on,pcie=on to enable). Reuses the gpex used on arm/aarch64. Seems to work ok on a quick test. Not fully sure how to deal correctly with ioports. The gpex device has a mmio window for the io address space. Will that approach work on x86 too? Anyway, just not having a ioport range seems to be a valid configuation, so I've just disabled them for now ... take care, Gerd
