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

[Stuart Menefy <stuart.menefy@xxxxxxxxxxx>]

Alexandre Ghiti <alexghiti@xxxxxxxxxxxx> 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@xxxxxxxxxxxx>

Tested-by: Stuart Menefy <stuart.menefy@xxxxxxxxxxx>