Tomasz Golinski wrote: > On 05.04.2016 14:26, Clemens Ladisch wrote: >> Martin/Tomasz, could we get the amd_iommu_dump dmesg output for an >> earlier kernel? > > It's for 4.1.15. > ... > [ 0.486934] AMD-Vi: DEV_SPECIAL(IOAPIC[5]) devid: 00:14.0 > [ 0.569054] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
All those "iommu: Adding device x to group y" messages from 4.4 are missing. Apparently, something caused the IOMMU to be enabled. Tomasz, could you please compare the configurations (/lib/modules/(version)/build/.config) with "diff -u" or something like that? Regards, Clemens _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
