RHEL6: "dmar: DRHD: handling fault status reg 2" messages are printed by the kdump kernel

Issue

When starting the kdump kernel, these messages appear:

dmar: DRHD: handling fault status reg 2
dmar: INTR-REMAP: Request device [[04:00.0] fault index 64
INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear

or

dmar: DRHD: handling fault status reg 2
dmar: INTR-REMAP: Request device [f1:00.0] fault index 46
INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
dmar: INTR-REMAP: Request device [f1:00.1] fault index 86
INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear