3 files changed, 32 insertions, 11 deletions

diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
index d7da19bcf928..c207504de84d 100644
--- a/arch/arm/include/asm/elf.h
+++ b/arch/arm/include/asm/elf.h
@@ -45,13 +45,15 @@ typedef struct user_fp elf_fpregset_t;
 #define EF_ARM_HASENTRY         0x00000002      /* All */
 #define EF_ARM_RELEXEC          0x00000001      /* All */
 
-#define R_ARM_NONE      0
-#define R_ARM_PC24      1
-#define R_ARM_ABS32     2
-#define R_ARM_CALL      28
-#define R_ARM_JUMP24    29
-#define R_ARM_V4BX      40
-#define R_ARM_PREL31    42
+#define R_ARM_NONE              0
+#define R_ARM_PC24              1
+#define R_ARM_ABS32             2
+#define R_ARM_CALL              28
+#define R_ARM_JUMP24            29
+#define R_ARM_V4BX              40
+#define R_ARM_PREL31            42
+#define R_ARM_MOVW_ABS_NC       43
+#define R_ARM_MOVT_ABS          44
 
 /*
  * These are used to set parameters in the core dumps.
diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h
index 857f1dfac794..321c83e43a1e 100644
--- a/arch/arm/include/asm/tlb.h
+++ b/arch/arm/include/asm/tlb.h
@@ -36,6 +36,8 @@
 struct mmu_gather {
         struct mm_struct        *mm;
         unsigned int            fullmm;
+        unsigned long           range_start;
+        unsigned long           range_end;
 };
 
 DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
@@ -63,7 +65,19 @@ tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
         put_cpu_var(mmu_gathers);
 }
 
-#define tlb_remove_tlb_entry(tlb,ptep,address)  do { } while (0)
+/*
+ * Memorize the range for the TLB flush.
+ */
+static inline void
+tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, unsigned long addr)
+{
+        if (!tlb->fullmm) {
+                if (addr < tlb->range_start)
+                        tlb->range_start = addr;
+                if (addr + PAGE_SIZE > tlb->range_end)
+                        tlb->range_end = addr + PAGE_SIZE;
+        }
+}
 
 /*
  * In the case of tlb vma handling, we can optimise these away in the
@@ -73,15 +87,18 @@ tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
 static inline void
 tlb_start_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
 {
-        if (!tlb->fullmm)
+        if (!tlb->fullmm) {
                 flush_cache_range(vma, vma->vm_start, vma->vm_end);
+                tlb->range_start = TASK_SIZE;
+                tlb->range_end = 0;
+        }
 }
 
 static inline void
 tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
 {
-        if (!tlb->fullmm)
-                flush_tlb_range(vma, vma->vm_start, vma->vm_end);
+        if (!tlb->fullmm && tlb->range_end > 0)
+                flush_tlb_range(vma, tlb->range_start, tlb->range_end);
 }
 
 #define tlb_remove_page(tlb,page)       free_page_and_swap_cache(page)
diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
index 010618487cf1..94cc58ef61ae 100644
--- a/arch/arm/include/asm/unistd.h
+++ b/arch/arm/include/asm/unistd.h
@@ -387,6 +387,8 @@
 #define __NR_dup3                       (__NR_SYSCALL_BASE+358)
 #define __NR_pipe2                      (__NR_SYSCALL_BASE+359)
 #define __NR_inotify_init1              (__NR_SYSCALL_BASE+360)
+#define __NR_preadv                     (__NR_SYSCALL_BASE+361)
+#define __NR_pwritev                    (__NR_SYSCALL_BASE+362)
 
 /*
  * The following SWIs are ARM private.