xps 13 9310 and MSI vector allocation

[wi nk]

Hello all!

  I've been running around the internet trying to sort out my wifi
adapter and I've landed here.  Similar to other reports I have an XPS
13 that is failing to load the ath11k driver.  The other thread had a
few suggestions of kernel configuration options to try, and I've
attempted all of them but I'm still stuck with the driver
initialization failure:

[    9.991558] ath11k_pci 0000:55:00.0: WARNING: ath11k PCI support is
experimental!
[    9.991984] ath11k_pci 0000:55:00.0: BAR 0: assigned [mem
0x8e300000-0x8e3fffff 64bit]
[    9.992003] ath11k_pci 0000:55:00.0: enabling device (0000 -> 0002)
[    9.992041] ath11k_pci 0000:55:00.0: failed to get 32 MSI vectors,
only -28 available
[    9.992043] ath11k_pci 0000:55:00.0: failed to enable msi: -28
[    9.992056] ath11k_pci: probe of 0000:55:00.0 failed with error -28


I've confirmed I have the VT/VT-d settings enabled in the BIOS.  The
kernel has the irq/iommu settings from the other thread enabled.  Is
there anything else to be done to try to make this work?

Thanks!
-Lee