X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-arm%2Fmmu_context.h;h=d1a65b1edcaab236f0a65706380f60e85d26fc04;hb=refs%2Fheads%2Fvserver;hp=4af9c411c617933438af278113f042bf15113cd9;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git

diff --git a/include/asm-arm/mmu_context.h b/include/asm-arm/mmu_context.h
index 4af9c411c..d1a65b1ed 100644
--- a/include/asm-arm/mmu_context.h
+++ b/include/asm-arm/mmu_context.h
@@ -13,8 +13,12 @@
 #ifndef __ASM_ARM_MMU_CONTEXT_H
 #define __ASM_ARM_MMU_CONTEXT_H
 
+#include <linux/compiler.h>
+#include <asm/cacheflush.h>
 #include <asm/proc-fns.h>
 
+void __check_kvm_seq(struct mm_struct *mm);
+
 #if __LINUX_ARM_ARCH__ >= 6
 
 /*
@@ -43,13 +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
@@ -80,14 +92,17 @@ 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) {
 		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);
 	}
+#endif
 }
 
 #define deactivate_mm(tsk,mm)	do { } while (0)