diff --git a/Utilities/VirtualMemory.cpp b/Utilities/VirtualMemory.cpp
index 88e0774938..23fed38db4 100644
--- a/Utilities/VirtualMemory.cpp
+++ b/Utilities/VirtualMemory.cpp
@@ -80,7 +80,7 @@ namespace utils
 #ifdef _WIN32
 		verify(HERE), ::VirtualAlloc(pointer, size, MEM_COMMIT, +prot);
 #else
-		verify(HERE), ::mprotect((void*)((u64)pointer & -4096), ::align(size, 4096), +prot) != -1;
+		verify(HERE), ::mprotect((void*)((u64)pointer & -4096), size + ((u64)pointer & 4095), +prot) != -1;
 #endif
 	}
 
@@ -93,6 +93,16 @@ namespace utils
 #endif
 	}
 
+	void memory_reset(void* pointer, std::size_t size, protection prot)
+	{
+#ifdef _WIN32
+		memory_decommit(pointer, size);
+		memory_commit(pointer, size, prot);
+#else
+		verify(HERE), ::mmap(pointer, size, +prot, MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
+#endif
+	}
+
 	void memory_release(void* pointer, std::size_t size)
 	{
 #ifdef _WIN32
@@ -120,7 +130,7 @@ namespace utils
 			addr += block_size;
 		}
 #else
-		verify(HERE), ::mprotect((void*)((u64)pointer & -4096), ::align(size, 4096), +prot) != -1;
+		verify(HERE), ::mprotect((void*)((u64)pointer & -4096), size + ((u64)pointer & 4095), +prot) != -1;
 #endif
 	}
 
diff --git a/Utilities/VirtualMemory.h b/Utilities/VirtualMemory.h
index f6fd0df133..4618baf012 100644
--- a/Utilities/VirtualMemory.h
+++ b/Utilities/VirtualMemory.h
@@ -25,11 +25,12 @@ namespace utils
 	*/
 	void memory_commit(void* pointer, std::size_t size, protection prot = protection::rw);
 
-	/**
-	* Decommit all memory committed via commit_page_memory.
-	*/
+	// Decommit all memory committed via commit_page_memory.
 	void memory_decommit(void* pointer, std::size_t size);
 
+	// Decommit all memory and commit it again.
+	void memory_reset(void* pointer, std::size_t size, protection prot = protection::rw);
+
 	// Free memory after reserved by memory_reserve, should specify original size
 	void memory_release(void* pointer, std::size_t size);