On Wed, Aug 11, 2021 at 03:08:24PM +0100, Christoph Hellwig wrote: > On Wed, Aug 11, 2021 at 12:40:28PM +0200, Ard Biesheuvel wrote: > > The whole problem we are solving here is that ACPI, being based on > > x86, conflates MMIO mappings with memory mappings, and has been using > > the same underlying infrastructure for either. > > So let's fix that problem instead of papering over it. Patch (3) in this series is a fix - I would ask whether it makes sense to merge patches (2-3) now and think about reworking the current ACPI IO/MEM mapping API later, it can be an invasive change for a fix, assuming we agree on how to rework the ACPI IO/MEM mapping API. Lorenzo