The MSI-X resource shouldn't be assumed to be always on BAR1. The Virtio v1.1 Spec did not specify that MSI-X table and PBA BAR has to be BAR1 either. Reported by: Yuan Rui <number201724@me.com> MFC after: 2 weeks Reviewed by: bryanv, jhb Approved by: philip (mentor) Differential Revision: https://reviews.freebsd.org/D28817