[RFC PATCHv1 0/7] ARM core support for hardware I/O coherency in non-SMP platforms

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Mon May 19 02:19:15 PDT 2014

Dear Catalin Marinas,

On Fri, 16 May 2014 16:11:30 +0100, Catalin Marinas wrote:

> > My question is should the kernel unconditionally enable the SCU
> > regardless of CONFIG_SMP or any other condition? Is there harm in
> > enabling the SCU when in AMP mode?
> I don't see why we couldn't always enable the SCU at boot, whether the
> OS runs SMP, AMP or UP mode.

Does this means that my "[RFC PATCHv1 4/7] ARM: kernel: allow the SCU
to be enabled even on !SMP" is OK ?


Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering

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