> > And why is this allocating memory inside the acpi table walker? It > > seems to me like the memory should be allocated once the mapping is > > made. > > > > Yes, this looks bad. Letting the walker build the list and then using > it is, probably, a better idea. > > > Maybe all the mappings should be created from the ACPI ranges right > > away? > > > > I don't know if it's a good idea to just map them all instead of doing > so only for relevant ones. Maybe it is safe, here I need an advice > from a more knowledgeable person. > Vanya, I also made a patch series to solve AMD's fTPM. My patch link is here, https://lkml.org/lkml/2019/9/9/132 . The maintainer, Jarkko, wanted me to remark on your patch, so I would like to cooperate with you. Your patch is good for me. If you are fine, I would like to take your patch and merge it with my patch series. I also would like to change some points Jason mentioned before. Of course, I will leave your commit message and sign-off-by note. According to the guideline below, I will just add co-developed-by and sign-off-by notes behind you. https://www.kernel.org/doc/html/v5.2/process/submitting-patches.html#when-to-use-acked-by-cc-and-co-developed-by If you have any idea about our co-work, please let me know. I hope we can solve AMD's fTPM problem soon. Seunghun