https://bugzilla.kernel.org/show_bug.cgi?id=201631 --- Comment #36 from erhard_f@xxxxxxxxxxx --- (In reply to Benjamin Herrenschmidt from comment #29) > [...] > Talking of which, I noticed the AMD GPU driver in the call traces above, > could it be a similar case of fun with GUP ? If you are talking about the "[ 4.883250] radeon: No suitable DMA available" message, this has also been the case before kernel 4.20-rc*. There also have been some DMA-related patches from https://git.raptorengineering.com/git/op-kernel-dev/log/?h=raptor-dma-dev-4.18-pre. Don't know if they reslove this error message of if they have been taken upstream already. The card is BTW a Radeon HD 6450, which is running fine on the Talos II. -- You are receiving this mail because: You are watching the assignee of the bug.