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 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu