Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / include / asm-arm / mmu_context.h

diff --git a/include/asm-arm/mmu_context.h b/include/asm-arm/mmu_context.h
index 81c59fa..d1a65b1 100644 (file)
--- a/include/asm-arm/mmu_context.h
+++ b/include/asm-arm/mmu_context.h
@@ -17,6 +17,8 @@
 #include <asm/cacheflush.h>
 #include <asm/proc-fns.h>
 
+void __check_kvm_seq(struct mm_struct *mm);
+
 #if __LINUX_ARM_ARCH__ >= 6
 
 /*
@@ -45,13 +47,21 @@ static inline void check_context(struct mm_struct *mm)
 {
        if (unlikely((mm->context.id ^ cpu_last_asid) >> ASID_BITS))
                __new_context(mm);
+
+       if (unlikely(mm->context.kvm_seq != init_mm.context.kvm_seq))
+               __check_kvm_seq(mm);
 }
 
 #define init_new_context(tsk,mm)       (__init_new_context(tsk,mm),0)
 
 #else
 
-#define check_context(mm)              do { } while (0)
+static inline void check_context(struct mm_struct *mm)
+{
+       if (unlikely(mm->context.kvm_seq != init_mm.context.kvm_seq))
+               __check_kvm_seq(mm);
+}
+
 #define init_new_context(tsk,mm)       0
 
 #endif
@@ -82,6 +92,7 @@ static inline void
 switch_mm(struct mm_struct *prev, struct mm_struct *next,
          struct task_struct *tsk)
 {
+#ifdef CONFIG_MMU
        unsigned int cpu = smp_processor_id();
 
        if (prev != next) {
@@ -91,6 +102,7 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
                if (cache_is_vivt())
                        cpu_clear(cpu, prev->cpu_vm_mask);
        }
+#endif
 }
 
 #define deactivate_mm(tsk,mm)  do { } while (0)