Messages in this thread | | | Date | Fri, 27 Jul 2018 10:27:54 +0200 | From | Jörg Rödel <> | Subject | Re: MSI B350M MORTAR: `AMD-Vi: Unable to write to IOMMU perf counter.` and `pci 0000:00:00.2: can't derive routing for PCI INT A` |
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Hi Paul,
On Mon, Jul 23, 2018 at 12:09:37PM +0200, Paul Menzel wrote: > > or the BIOS did not enable the performance counter feature in the IOMMU > > hardware. > > Is it possible to check that from the OS side?
It would be if we had the NB documentation, but I guess those details are not publicly available.
> > Are you running on the latest BIOS? > > Yes, I am even using a “beta“ one from [1]. > > DMI: MSI MS-7A37/B350M MORTAR (MS-7A37), BIOS 1.G1 05/17/2018
I think the best you can do is to report this as a bug to your BIOS vendor and hope they'll fix it.
Joerg
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