diff --git a/Makefile b/Makefile
index 9ddbd54..b7b35a5 100644
--- a/Makefile
+++ b/Makefile
@@ -196,13 +196,14 @@ else ifeq ($(platform), vita)
 	CC = arm-vita-eabi-gcc$(EXE_EXT)
 	AR = arm-vita-eabi-ar$(EXE_EXT)
 	CFLAGS += -DVITA
-	CFLAGS += -mcpu=cortex-a9 -mfloat-abi=hard
+	CFLAGS += -marm -mcpu=cortex-a9 -mfloat-abi=hard
 	CFLAGS += -Wall -mword-relocations
 	CFLAGS += -fomit-frame-pointer -ffast-math
 	CFLAGS += -mword-relocations -fno-unwind-tables -fno-asynchronous-unwind-tables 
 	CFLAGS += -ftree-vectorize -fno-optimize-sibling-calls
 	ASFLAGS += -mcpu=cortex-a9
 	STATIC_LINKING = 1
+	HAVE_DYNAREC = 1
 	CPU_ARCH := arm
 
 # CTR(3DS)
diff --git a/arm/arm_emit.h b/arm/arm_emit.h
index 185caef..c40d1ce 100644
--- a/arm/arm_emit.h
+++ b/arm/arm_emit.h
@@ -21,10 +21,7 @@
 #define ARM_EMIT_H
 
 #include "arm_codegen.h"
-#if defined(VITA)
-#define VITA_RW_INIT sceKernelOpenVMDomain
-#define VITA_RW_END sceKernelCloseVMDomain
-#endif
+
 u32 arm_update_gba_arm(u32 pc);
 u32 arm_update_gba_thumb(u32 pc);
 u32 arm_update_gba_idle_arm(u32 pc);
diff --git a/cpu_threaded.c b/cpu_threaded.c
index 63f258d..f740502 100644
--- a/cpu_threaded.c
+++ b/cpu_threaded.c
@@ -260,12 +260,21 @@ static INLINE void RW_END(void)
 #if defined(PSP_BUILD)
 #define translate_invalidate_dcache() sceKernelDcacheWritebackAll()
 #elif defined(VITA)
-#define translate_invalidate_dcache() (void)0
+#define translate_invalidate_dcache_one(which)                                \
+  if (which##_translation_ptr > last_##which##_translation_ptr)               \
+  {   	                                             \
+    sceKernelSyncVMDomain(sceBlock,last_##which##_translation_ptr,          \
+      which##_translation_ptr - last_##which##_translation_ptr);              \
+  }
 
-#define invalidate_icache_region(addr, size)																	\
-{																																							\
-	int ret = sceKernelSyncVMDomain(sceBlock, addr, size);											\
-} 																																						
+#define translate_invalidate_dcache()                                         \
+{                                                                             \
+  translate_invalidate_dcache_one(rom)                                        \
+  translate_invalidate_dcache_one(ram)                                        \
+  translate_invalidate_dcache_one(bios)                                       \
+}
+
+#define invalidate_icache_region(addr, size) (void)0
 
 #elif defined(_3DS)
 #include "3ds/3ds_utils.h"
@@ -2854,7 +2863,7 @@ u8 *block_lookup_address_##type(u32 pc)                           	      \
   /* Starting at the beginning, we allow for one translation cache flush. */  \
   if(translation_recursion_level == 0){                                       \
     translation_flush_count = 0;                                              \
-		RW_INIT();                                        										  	\
+		RW_INIT();                                              \
 	}																																						\
   block_lookup_address_pc_##type();                                           \
                                                                               \
@@ -2950,8 +2959,6 @@ u8 *block_lookup_address_##type(u32 pc)                           	      \
       block_address = (u8 *)(-1);                                             \
       break;                                                                  \
   }                                                                           \
-	if(translation_recursion_level == 0)                                    		\
-		RW_END();                                           		\
 		                                                                      		\
   return block_address;                                                       \
 }                                                                             \
@@ -3415,7 +3422,6 @@ s32 translate_block_arm(u32 pc, translation_region_type
           flush_translation_cache_bios();                                     
           break;                                                              
       }                                                                       
-      RW_END();                                                                        
       return -1;                                                              
     }                                                                         
                                                                               
@@ -3493,13 +3499,11 @@ s32 translate_block_arm(u32 pc, translation_region_type
     branch_target = external_block_exits[i].branch_target;                    
     arm_link_block();                                                      
     if(!translation_target){                                          
-			RW_END();            
 			return -1;
 		}                                                  
     generate_branch_patch_unconditional(                                      
      external_block_exits[i].branch_source, translation_target);              
   }                                                                           
-  RW_END();                                                                
   return 0;                                                                   
 }
 
@@ -3635,7 +3639,6 @@ s32 translate_block_thumb(u32 pc, translation_region_type
           flush_translation_cache_bios();                                     
           break;                                                              
       }                                                                       
-			RW_END();                                                                
       return -1;                                                              
     }                                                                         
                                                                               
@@ -3713,13 +3716,11 @@ s32 translate_block_thumb(u32 pc, translation_region_type
     branch_target = external_block_exits[i].branch_target;                    
     thumb_link_block();                                                      
     if(!translation_target){         
-			RW_END();                                                                                              
       return -1;           
 		}                                                   
     generate_branch_patch_unconditional(                                      
      external_block_exits[i].branch_source, translation_target);              
   }                                                                           
-	RW_END();                                                                                                                                              
   return 0;
 }
 
diff --git a/libretro.c b/libretro.c
index 00dfe55..d0081da 100644
--- a/libretro.c
+++ b/libretro.c
@@ -19,6 +19,12 @@ static inline int align(int x, int n) {
 #define FOUR_KB_ALIGN(x) align(x, 12)
 #define MB_ALIGN(x) align(x, 20)
 
+int _newlib_vm_size_user = ROM_TRANSLATION_CACHE_SIZE +
+                           RAM_TRANSLATION_CACHE_SIZE + 
+                           BIOS_TRANSLATION_CACHE_SIZE;
+
+int getVMBlock();
+
 #endif
 
 #if defined(_3DS)
@@ -163,9 +169,8 @@ void retro_init(void)
       if(!translation_caches_inited){
       void* currentHandle;
 
-      sceBlock = sceKernelAllocMemBlockForVM("code", MB_ALIGN(FOUR_KB_ALIGN(ROM_TRANSLATION_CACHE_SIZE +
-                                                    RAM_TRANSLATION_CACHE_SIZE + 
-                                                    BIOS_TRANSLATION_CACHE_SIZE)));
+      sceBlock = getVMBlock();
+      
       if (sceBlock < 0)
       {
         return;
@@ -237,9 +242,7 @@ void retro_deinit(void)
 
 #if defined(VITA) && defined(HAVE_DYNAREC)
     if(translation_caches_inited){
-        sceKernelFreeMemBlock(sceBlock);
-
-      translation_caches_inited = 0;
+        translation_caches_inited = 0;
     }
 #endif
 
@@ -438,6 +441,11 @@ bool retro_load_game(const struct retro_game_info* info)
    rom_translation_ptr = rom_translation_cache;
    ram_translation_ptr = ram_translation_cache;
    bios_translation_ptr = bios_translation_cache;
+#elif defined(VITA)
+   dynarec_enable = 1;
+   rom_translation_ptr = rom_translation_cache;
+   ram_translation_ptr = ram_translation_cache;
+   bios_translation_ptr = bios_translation_cache;
 #endif
    }
    else