3 files changed, 17 insertions, 1 deletions

diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index 94f973b704f1..176a4fb04989 100644
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -68,6 +68,11 @@
  */
 #define XIP_VIRT_ADDR(physaddr)  (MODULE_START + ((physaddr) & 0x000fffff))
 
+/*
+ * Allow 2MB-aligned ioremap pages
+ */
+#define IOREMAP_MAX_ORDER       21
+
 #else /* CONFIG_MMU */
 
 /*
diff --git a/include/asm-arm/mmu.h b/include/asm-arm/mmu.h
index 23dde52e0945..fe2a23b5627b 100644
--- a/include/asm-arm/mmu.h
+++ b/include/asm-arm/mmu.h
@@ -7,6 +7,7 @@ typedef struct {
 #if __LINUX_ARM_ARCH__ >= 6
         unsigned int id;
 #endif
+        unsigned int kvm_seq;
 } mm_context_t;
 
 #if __LINUX_ARM_ARCH__ >= 6
diff --git a/include/asm-arm/mmu_context.h b/include/asm-arm/mmu_context.h
index 9fadb01e030d..d1a65b1edcaa 100644
--- 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