On Thu, Oct 04, 2018 at 10:43:18AM +0200, Joerg Roedel wrote: > Yeah, that's what I also found out back then, the region needs to be WX. > So we can either leave with the warning, as we know it is harmless and > where it comes from or implement an exception in the checking code for > that region. The second thing is what I'm thinking too. Or, a 3rd: not direct-map that first range at all. Commenting out the ISA range mapping didn't have any adverse effects on my system here, for example. But then those other mappings appeared: https://lkml.kernel.org/r/20181003212255.GB28361@xxxxxxx for which I have no explanation yet how they came about. This needs to be understood fully before we do anything. But it is 32-bit so it gets preempted by more important things all the time :) -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.
