diff --git a/Source/Core/Core/PowerPC/JitCommon/JitCache.cpp b/Source/Core/Core/PowerPC/JitCommon/JitCache.cpp
index a41ebb71b2..98ce48f24a 100644
--- a/Source/Core/Core/PowerPC/JitCommon/JitCache.cpp
+++ b/Source/Core/Core/PowerPC/JitCommon/JitCache.cpp
@@ -42,7 +42,11 @@ void JitBaseBlockCache::Init()
 {
   Common::JitRegister::Init(Config::Get(Config::MAIN_PERF_MAP_DIR));
 
-  m_block_map_arena.GrabSHMSegment(FAST_BLOCK_MAP_SIZE, "dolphin-emu-jitblock");
+  m_fast_block_map = reinterpret_cast<JitBlock**>(m_block_map_arena.Create(FAST_BLOCK_MAP_SIZE));
+  if (m_fast_block_map)
+    m_fast_block_map_ptr = m_fast_block_map;
+  else
+    m_fast_block_map_ptr = m_fast_block_map_fallback.data();
 
   Clear();
 }
@@ -51,12 +55,7 @@ void JitBaseBlockCache::Shutdown()
 {
   Common::JitRegister::Shutdown();
 
-  if (m_fast_block_map)
-  {
-    m_block_map_arena.ReleaseView(m_fast_block_map, FAST_BLOCK_MAP_SIZE);
-  }
-
-  m_block_map_arena.ReleaseSHMSegment();
+  m_block_map_arena.Release();
 }
 
 // This clears the JIT cache. It's called from JitCache.cpp when the JIT cache
@@ -80,23 +79,7 @@ void JitBaseBlockCache::Clear()
   valid_block.ClearAll();
 
   if (m_fast_block_map)
-  {
-    m_block_map_arena.ReleaseView(m_fast_block_map, FAST_BLOCK_MAP_SIZE);
-    m_block_map_arena.ReleaseSHMSegment();
-    m_block_map_arena.GrabSHMSegment(FAST_BLOCK_MAP_SIZE, "dolphin-emu-jitblock");
-  }
-
-  m_fast_block_map =
-      reinterpret_cast<JitBlock**>(m_block_map_arena.CreateView(0, FAST_BLOCK_MAP_SIZE));
-
-  if (m_fast_block_map)
-  {
-    m_fast_block_map_ptr = m_fast_block_map;
-  }
-  else
-  {
-    m_fast_block_map_ptr = m_fast_block_map_fallback.data();
-  }
+    m_block_map_arena.Clear();
 }
 
 void JitBaseBlockCache::Reset()
diff --git a/Source/Core/Core/PowerPC/JitCommon/JitCache.h b/Source/Core/Core/PowerPC/JitCommon/JitCache.h
index d3f353e815..cf6f785d98 100644
--- a/Source/Core/Core/PowerPC/JitCommon/JitCache.h
+++ b/Source/Core/Core/PowerPC/JitCommon/JitCache.h
@@ -212,7 +212,7 @@ private:
   // This is used as a fast cache of block_map used in the assembly dispatcher.
   // It is implemented via a shm segment using m_block_map_arena.
   JitBlock** m_fast_block_map = 0;
-  Common::MemArena m_block_map_arena;
+  Common::LazyMemoryRegion m_block_map_arena;
 
   // An alternative for the above fast_block_map but without a shm segment
   // in case the shm memory region couldn't be allocated.