MIPS: Avoid potential hazard on Context register

[firefly-linux-kernel-4.4.55.git] / arch / mips / include / asm / mmu_context.h

diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h
index ed331c2e48826c6a87cb0c9c1823d419b85264c8..6083db586500ba14e22f94acab819f40e13a158f 100644 (file)
--- a/arch/mips/include/asm/mmu_context.h
+++ b/arch/mips/include/asm/mmu_context.h
@@ -16,6 +16,7 @@
 #include <linux/smp.h>
 #include <linux/slab.h>
 #include <asm/cacheflush.h>
+#include <asm/hazards.h>
 #include <asm/tlbflush.h>
 #ifdef CONFIG_MIPS_MT_SMTC
 #include <asm/mipsmtregs.h>
@@ -36,11 +37,13 @@ extern unsigned long pgd_current[];
 #ifdef CONFIG_32BIT
 #define TLBMISS_HANDLER_SETUP()                                                \
        write_c0_context((unsigned long) smp_processor_id() << 25);     \
+       back_to_back_c0_hazard();                                       \
        TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
 #endif
 #ifdef CONFIG_64BIT
 #define TLBMISS_HANDLER_SETUP()                                                \
        write_c0_context((unsigned long) smp_processor_id() << 26);     \
+       back_to_back_c0_hazard();                                       \
        TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
 #endif