Enabling RO on a VF

[Haakon Bugge]

Hey,


Commit 1477d44ce47d ("RDMA/mlx5: Enable Relaxed Ordering by default for kernel ULPs") uses pcie_relaxed_ordering_enabled() to check if RO can be enabled. This function checks if the Enable Relaxed Ordering bit in the Device Control register is set. However, on a VF, this bit is RsvdP (Reserved for future RW implementations. Register bits are read-only and must return zero when read. Software must preserve the value read for writes to bits.).

Hence, AFAICT, RO will not be enabled when using a VF.

How can that be fixed?


Thxs, Håkon