From ebbe9d7d3a2ca0d62f1a2c08c7e7a3e0a88cf999 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 5 Apr 2017 12:44:49 +1000 Subject: [PATCH] powerpc: Allow platforms to force-enable CONFIG_SMP Of the 64-bit Book3S platforms, only powermac supports booting on an actual non-SMP system. The other platforms can be built with SMP disabled, but it doesn't make a lot of sense given the CPUs they support are all multicore or multithreaded. So give platforms the option of forcing SMP=y. Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/Kconfig.cputype | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index ef4c4b8fc547..ee87cb37c580 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -371,10 +371,16 @@ config PPC_PERF_CTRS help This enables the powerpc-specific perf_event back-end. +config FORCE_SMP + # Allow platforms to force SMP=y by selecting this + bool + default n + select SMP + config SMP depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x select GENERIC_IRQ_MIGRATION - bool "Symmetric multi-processing support" + bool "Symmetric multi-processing support" if !FORCE_SMP ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more -- 2.20.1