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 <m...@ellerman.id.au>
---
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 99b0ae8acb78..5c011e4baf0b 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -371,9 +371,15 @@ 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
- 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
--
2.7.4
