On Wed, 2017-08-02 at 11:06 +0200, Marcin Juszkiewicz wrote: > Thanks a lot for that documentation. Glad you found it useful :) Hopefully I can get it merged soon. > At Linaro we use AArch64 servers to deploy VM machines (with OpenStack > Newton or just libvirt) and issues with PCI hotplug came again and again. > > https://bugs.linaro.org/show_bug.cgi?id=2819 is main one. It was created > when we used libvirt 2.2.0 but now we are at 3.4.0 version and problem > is finally debugged properly ;D > > From my tests it looks like adding 9-10 pcie-root-port devices will > handle our use - just have to convince OpenStack guys about it (or find > a way around libvirt to get those by default). The number of PCIe Root Ports provided by libvirt by default is very unlikely to change: the current behavior, which is consistent among aarch64/virt and x86_64/q35, has been chosen specifically because it provides enough flexibility for casual users without enforcing (too much of) a policy, which is something that libvirt actively tries to avoid. Adding extra PCIe Root Ports as appropriate for the specific guest flavor is left as an exercise for the higher-level management tool, in your case OpenStack. -- Andrea Bolognani / Red Hat / Virtualization -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
