The main patch in this series is 3/3 with some preparatory patches to simplify the implementation. To summarize:
Concurrent access the the MSI-X control register are not serialized with a suitable lock. For example, in msix_capability_init() access use the pcidevs_lock() but some calls to msi_set_mask_bit() use the interrupt descriptor lock. This can lead to MSI-X being incorrectly disabled and subsequent failures due to msix_memory_decoded() calls that check for MSI-X being enabled. David