On 7/6/22 12:34, Arnd Bergmann wrote: > On Wed, Jul 6, 2022 at 8:33 AM Christophe Leroy > <christophe.leroy@xxxxxxxxxx> wrote: > >> As far as I can see in Kconfig, CONFIG_MMU is user selectable on the >> following architectures: >> - ARM >> - M68K >> - RISCV >> - SH >> >> And is disabled by default on XTENSA. > > Right, the list is complete, though it's also default-enabled for > every CPU core on xtensa, and you can only disable it for > "custom" CPU cores. ARM, M68K, RISCV all have got them inside wrapper or files which are not built, without CONFIG_MMU. With build fixes for SH and XTENSA on linux-next, I guess we are good.