On Tue, Aug 13, 2019 at 08:11:38PM +0000, Christophe Leroy wrote: > Until vmalloc system is up and running, ioremap basically > allocates addresses at the border of the IOREMAP area.
Note that while a few other architectures have a magic hack like powerpc to make ioremap work before vmalloc, the normal practice would be to explicitly use early_ioremap. I guess your change is fine for now, but it might make sense convert powerpc to the explicit early_ioremap scheme as well.
