This should not be needed when running on UP systems.
Additionally we will also get an undefined instruction on ARM cores
without the extended CPUID registers with CONFIG_SMP_ON_UP.
Also, we can now remove the is_smp() test from mmu.c.
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h
index 7de5aa5..7f4e663 100644
--- a/arch/arm/include/asm/smp_plat.h
+++ b/arch/arm/include/asm/smp_plat.h
@@ -7,17 +7,6 @@
#include <asm/cputype.h>
-/* all SMP configurations have the extended CPUID registers */
-static inline int tlb_ops_need_broadcast(void)
-{
- return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 2;
-}
-
-static inline int cache_ops_need_broadcast(void)
-{
- return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 1;
-}
-
/*
* Return true if we are running on a SMP platform
*/
@@ -33,4 +22,21 @@ static inline bool is_smp(void)
#endif
}
+/* all SMP configurations have the extended CPUID registers */
+static inline int tlb_ops_need_broadcast(void)
+{
+ if (!is_smp())
+ return 0;
+
+ return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 2;
+}
+
+static inline int cache_ops_need_broadcast(void)
+{
+ if (!is_smp())
+ return 0;
+
+ return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 1;
+}
+
#endif
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index a789320..34df905 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -800,7 +800,7 @@ static void __init sanity_check_meminfo(void)
* rather difficult.
*/
reason = "with VIPT aliasing cache";
- } else if (is_smp() && tlb_ops_need_broadcast()) {
+ } else if (tlb_ops_need_broadcast()) {
/*
* kmap_high needs to occasionally flush TLB entries,
* however, if the TLB entries need to be broadcast
--
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