Description of problem:
Chelsio T5 adapters incorrectly list the MSI-X Pending Bit Array (PBA) table at an offset beyond the PCI BAR containing it. The guest does not use the PBA, but vfio does as part of mapping device regions for the guest. When attempting to assign one of these devices to a VM, the call to msix_init() will fail due to this inconsistency. A quirk has been added to the QEMU vfio-pci driver correct this problem in the case of a Chelsio T5 adapter and error with a useful message indicating a hardware problem in the general case.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Attempt to assign Chelsio T5 to a guest
Device fails to attach on hot plug, VM startup failure on cold plug (presumably, we don't have any)
Device attaches/VM starts
Fix included in qemu-kvm-1.5.3-98.el7
According to comment9, set this issue as verified.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.