powerpc/44x: don't use tlbivax on AMP systems

Since other OS's may be running on the other cores don't use tlbivax

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 4138b21ae80a..bb5591f424b3 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -120,9 +120,14 @@ static inline int mmu_has_feature(unsigned long feature)
         return (cur_cpu_spec->mmu_features & feature);
 }
 
+static inline void mmu_clear_feature(unsigned long feature)
+{
+        cur_cpu_spec->mmu_features &= ~feature;
+}
+
 extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
 
-/* MMU initialization (64-bit only fo now) */
+/* MMU initialization */
 extern void early_init_mmu(void);
 extern void early_init_mmu_secondary(void);