[PATCH] riscv: Extend sv39 linear mapping max size to 128G

[Stuart Menefy]

Alexandre Ghiti <alexghiti at rivosinc.com> writes:
> This harmonizes all virtual addressing modes which can now all map
> (PGDIR_SIZE * PTRS_PER_PGD) / 4 of physical memory.
>
> Signed-off-by: Alexandre Ghiti <alexghiti at rivosinc.com>

Tested-by: Stuart Menefy <stuart.menefy at codasip.com>