On 23/07/2022 04:37, Steev Klimaszewski wrote: >> >> Currently it's 5.19.0-rc7 (torvalds tree at 4ba1329c) with a few extra >> patches on top, the bwmon set included. It's possible that secure >> world uses it, but I do not know enough about that to say one way or >> the other. To test patches you should apply them on maintainer's tree or linux-next. Applying on other trees of course might be useful for testing some backports, but it is independent process and different issue. >> >> -- steev >> > I think you may be right; I just applied this patchset to -next > (20220722) and i do not see the error message there. On my 5.19-rc7 > tree, i am also testing a patchset that enables qcom devices to access > efivars, so possibly we are ending up in secure world there? Actually mapping of IO space should not touch secure world, so this was a long shot assuming you test it on the next. Best regards, Krzysztof