DMAR errors on Asrock ep2c602

I'm preparing to distro hop (as much as I love Fedora I can't get Blackmagic Fusion to work on F25) and thus finally did some closer look to the logs and info during boot.
When booting Solus live usb I'm getting this:

DMAR: DRHD: handling fault status reg 2
DMAR: [DMA Read] Request device [0a:00.0] fault addr 726ad000 [fault reason 06] PTE Read access is not set
ata7: COMRESET failed (errno=-16)

A look at Fedora's dmesg gets me:

$ dmesg | grep -e DMAR -e IOMMU
[ 0.000000] ACPI: DMAR 0x000000007DE192D0 000110 (v01 A M I OEMDMAR 00000001 INTL 00000001)
[ 0.083040] DMAR: Host address width 46
[ 0.083042] DMAR: DRHD base: 0x000000fbffe000 flags: 0x0
[ 0.083050] DMAR: dmar0: reg_base_addr fbffe000 ver 1:0 cap d2078c106f0462 ecap f020fe
[ 0.083051] DMAR: DRHD base: 0x000000dfffc000 flags: 0x1
[ 0.083055] DMAR: dmar1: reg_base_addr dfffc000 ver 1:0 cap d2078c106f0462 ecap f020fe
[ 0.083056] DMAR: RMRR base: 0x0000007f231000 end: 0x0000007f23efff
[ 0.083057] DMAR: ATSR flags: 0x0
[ 0.083058] DMAR: RHSA base: 0x000000fbffe000 proximity domain: 0x1
[ 0.083059] DMAR: RHSA base: 0x000000dfffc000 proximity domain: 0x0
[ 0.083061] DMAR-IR: IOAPIC id 3 under DRHD base 0xfbffe000 IOMMU 0
[ 0.083062] DMAR-IR: IOAPIC id 0 under DRHD base 0xdfffc000 IOMMU 1
[ 0.083063] DMAR-IR: IOAPIC id 2 under DRHD base 0xdfffc000 IOMMU 1
[ 0.083063] DMAR-IR: HPET id 0 under DRHD base 0xdfffc000
[ 0.083064] DMAR-IR: Queued invalidation will be enabled to support x2apic and Intr-remapping.
[ 0.083867] DMAR-IR: Enabled IRQ remapping in x2apic mode
[ 2.677193] DMAR: [Firmware Bug]: RMRR entry for device 02:00.0 is broken - applying workaround

Of course I could disable virtualization, but the plan is to use pcie passthrough on a virtual machine when I need to use apps that are not available on Linux.
I'm on a double Xeon e5 build with asrock ep2c602 moba.
Any ideas on a fix? Or at the very least how much worried should I bee about it? Humbly admit that terms like DMAR tables are beyond my comfort zone :D .