[RFC PATCH 11/11] ARM: Allow ARCH_MULTIPLATFORM to be selected for NOMMU

Russell King - ARM Linux linux at armlinux.org.uk
Wed Nov 23 11:16:21 PST 2016


On Wed, Nov 23, 2016 at 09:18:29PM +0530, Afzal Mohammed wrote:
> multi_v7_defconfig & MMU disabled, stderr was more verbose and was
> unhappy with Kconfig dependencies,

Well, !MMU and multiplatform _are_ exclusive in reality.  One of the
things we work around in multiplatform is the different physical
address space layouts of the platforms, particularly with where RAM
is located.  That's not possible in !MMU configurations.  A kernel
built to support every platform in multiplatform will not boot on
most of them.

So efforts to make !MMU work with multiplatform are IMHO rather
misguided.

!MMU makes sense with classifications of systems (like the Cortex-M*
based systems) but not everything.

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