On 26.08.20 09:50, Simon Leiner wrote:
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).
This seems to be an Arm specific function.
virt_addr_valid() seems to be a good fit.
Juergen
