On 26.08.20 08:20, Jan Beulich wrote: > Hmm, to me __phys_to_virt() and __virt_to_phys_nodebug() give > the impression that they're just linear transformations of the > address, which would seem to suggest there's a pre-determined > address range used for the direct map.
>From eyeballing the kernel code, it seems like __is_lm_address() is suitable for such a check, especially since it is also used in __virt_to_phys() (the one in arch/arm64/mm/physaddr.c). Greetings, Simon