[ARM SMP] Do not clear cpu_vm_mask for VIPT caches

Since we do not invalidate TLBs/caches on MM switches, we should not
clear the cpu_vm_mask for the CPU.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-arm/mmu_context.h b/include/asm-arm/mmu_context.h
index 4af9c411c617..57b8def83d41 100644
--- a/include/asm-arm/mmu_context.h
+++ b/include/asm-arm/mmu_context.h
@@ -86,7 +86,8 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
                 cpu_set(cpu, next->cpu_vm_mask);
                 check_context(next);
                 cpu_switch_mm(next->pgd, next);
-                cpu_clear(cpu, prev->cpu_vm_mask);
+                if (cache_is_vivt())
+                        cpu_clear(cpu, prev->cpu_vm_mask);
         }
 }