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-rw-r--r--kernel/arch/arm/include/asm/mmu.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/arch/arm/include/asm/mmu.h b/kernel/arch/arm/include/asm/mmu.h
new file mode 100644
index 000000000..a5b474210
--- /dev/null
+++ b/kernel/arch/arm/include/asm/mmu.h
@@ -0,0 +1,40 @@
+#ifndef __ARM_MMU_H
+#define __ARM_MMU_H
+
+#ifdef CONFIG_MMU
+
+typedef struct {
+#ifdef CONFIG_CPU_HAS_ASID
+ atomic64_t id;
+#else
+ int switch_pending;
+#endif
+ unsigned int vmalloc_seq;
+ unsigned long sigpage;
+#ifdef CONFIG_VDSO
+ unsigned long vdso;
+#endif
+} mm_context_t;
+
+#ifdef CONFIG_CPU_HAS_ASID
+#define ASID_BITS 8
+#define ASID_MASK ((~0ULL) << ASID_BITS)
+#define ASID(mm) ((unsigned int)((mm)->context.id.counter & ~ASID_MASK))
+#else
+#define ASID(mm) (0)
+#endif
+
+#else
+
+/*
+ * From nommu.h:
+ * Copyright (C) 2002, David McCullough <davidm@snapgear.com>
+ * modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
+ */
+typedef struct {
+ unsigned long end_brk;
+} mm_context_t;
+
+#endif
+
+#endif