diff --git a/crates/vm-bootloader/src/boot_loader.rs b/crates/vm-bootloader/src/boot_loader.rs
index 8124f63..03f1ad5 100644
--- a/crates/vm-bootloader/src/boot_loader.rs
+++ b/crates/vm-bootloader/src/boot_loader.rs
@@ -56,7 +56,7 @@ where
     fn load(
         &self,
         virt: &mut V,
-        memory: &mut MemoryAddressSpace<V::Memory>,
+        memory: &MemoryAddressSpace<V::Memory>,
         irq_chip: &dyn InterruptController,
         devices: Iter<'_, Box<dyn MmioDevice>>,
     ) -> Result<()>;
diff --git a/crates/vm-bootloader/src/boot_loader/arch/aarch64.rs b/crates/vm-bootloader/src/boot_loader/arch/aarch64.rs
index dd66fbb..6a979f3 100644
--- a/crates/vm-bootloader/src/boot_loader/arch/aarch64.rs
+++ b/crates/vm-bootloader/src/boot_loader/arch/aarch64.rs
@@ -33,7 +33,7 @@ impl AArch64BootLoader {
     fn load_image<C>(
         &self,
         layout: &mut AArch64Layout,
-        memory: &mut MemoryAddressSpace<C>,
+        memory: &MemoryAddressSpace<C>,
     ) -> Result<()>
     where
         C: MemoryContainer,
@@ -61,7 +61,7 @@ impl AArch64BootLoader {
     fn load_initrd<C>(
         &self,
         layout: &mut AArch64Layout,
-        memory: &mut MemoryAddressSpace<C>,
+        memory: &MemoryAddressSpace<C>,
     ) -> Result<()>
     where
         C: MemoryContainer,
@@ -88,7 +88,7 @@ impl AArch64BootLoader {
     fn load_dtb<C>(
         &self,
         layout: &mut AArch64Layout,
-        memory: &mut MemoryAddressSpace<C>,
+        memory: &MemoryAddressSpace<C>,
         dtb: Vec<u8>,
     ) -> Result<()>
     where
@@ -256,7 +256,7 @@ where
     fn load(
         &self,
         virt: &mut V,
-        memory: &mut MemoryAddressSpace<V::Memory>,
+        memory: &MemoryAddressSpace<V::Memory>,
         irq_chip: &dyn InterruptController,
         devices: Iter<'_, Box<dyn MmioDevice>>,
     ) -> Result<()> {
diff --git a/crates/vm-bootloader/src/boot_loader/arch/x86_64.rs b/crates/vm-bootloader/src/boot_loader/arch/x86_64.rs
index de9a97f..b95a426 100644
--- a/crates/vm-bootloader/src/boot_loader/arch/x86_64.rs
+++ b/crates/vm-bootloader/src/boot_loader/arch/x86_64.rs
@@ -28,7 +28,7 @@ where
     fn load(
         &self,
         _virt: &mut V,
-        _memory: &mut MemoryAddressSpace<V::Memory>,
+        _memory: &MemoryAddressSpace<V::Memory>,
         _irq_chip: &dyn InterruptController,
         _devices: Iter<'_, Box<dyn MmioDevice>>,
     ) -> Result<()> {
diff --git a/crates/vm-bootloader/src/initrd_loader.rs b/crates/vm-bootloader/src/initrd_loader.rs
index d604122..c517650 100644
--- a/crates/vm-bootloader/src/initrd_loader.rs
+++ b/crates/vm-bootloader/src/initrd_loader.rs
@@ -30,7 +30,7 @@ impl InitrdLoader {
         Ok(InitrdLoader { initrd })
     }
 
-    pub fn load<C>(&self, addr: u64, memory: &mut MemoryAddressSpace<C>) -> Result<LoadResult>
+    pub fn load<C>(&self, addr: u64, memory: &MemoryAddressSpace<C>) -> Result<LoadResult>
     where
         C: MemoryContainer,
     {
diff --git a/crates/vm-bootloader/src/kernel_loader.rs b/crates/vm-bootloader/src/kernel_loader.rs
index 1ace535..8b73284 100644
--- a/crates/vm-bootloader/src/kernel_loader.rs
+++ b/crates/vm-bootloader/src/kernel_loader.rs
@@ -40,6 +40,6 @@ pub trait KernelLoader<C> {
     fn load(
         &self,
         boot_params: &Self::BootParams,
-        memory: &mut MemoryAddressSpace<C>,
+        memory: &MemoryAddressSpace<C>,
     ) -> Result<LoadResult>;
 }
diff --git a/crates/vm-bootloader/src/kernel_loader/linux/bzimage.rs b/crates/vm-bootloader/src/kernel_loader/linux/bzimage.rs
index 3583a43..98bf4ab 100644
--- a/crates/vm-bootloader/src/kernel_loader/linux/bzimage.rs
+++ b/crates/vm-bootloader/src/kernel_loader/linux/bzimage.rs
@@ -180,7 +180,7 @@ where
     fn load(
         &self,
         _boot_params: &Self::BootParams,
-        _memory: &mut MemoryAddressSpace<C>,
+        _memory: &MemoryAddressSpace<C>,
     ) -> Result<LoadResult> {
         todo!()
     }
diff --git a/crates/vm-bootloader/src/kernel_loader/linux/image.rs b/crates/vm-bootloader/src/kernel_loader/linux/image.rs
index 857b456..1c07d16 100644
--- a/crates/vm-bootloader/src/kernel_loader/linux/image.rs
+++ b/crates/vm-bootloader/src/kernel_loader/linux/image.rs
@@ -89,7 +89,7 @@ where
     fn load(
         &self,
         boot_params: &AArch64BootParams,
-        memory: &mut MemoryAddressSpace<C>,
+        memory: &MemoryAddressSpace<C>,
     ) -> Result<LoadResult> {
         let header = self.get_header()?;
 
diff --git a/crates/vm-core/src/virt/hvp/mm.rs b/crates/vm-core/src/virt/hvp/mm.rs
index 0836cad..e86425f 100644
--- a/crates/vm-core/src/virt/hvp/mm.rs
+++ b/crates/vm-core/src/virt/hvp/mm.rs
@@ -10,7 +10,7 @@ unsafe impl Send for MemoryWrapper {}
 unsafe impl Sync for MemoryWrapper {}
 
 impl MemoryContainer for MemoryWrapper {
-    fn to_hva(&mut self) -> *mut u8 {
+    fn to_hva(&self) -> *mut u8 {
         self.0.host_addr()
     }
 }
diff --git a/crates/vm-device/src/device/virtio/virtio_blk.rs b/crates/vm-device/src/device/virtio/virtio_blk.rs
index 86a3a66..d6e158f 100644
--- a/crates/vm-device/src/device/virtio/virtio_blk.rs
+++ b/crates/vm-device/src/device/virtio/virtio_blk.rs
@@ -1,5 +1,4 @@
 use std::sync::Arc;
-use std::sync::Mutex;
 
 use tokio::sync::Notify;
 use vm_core::arch::irq::InterruptController;
@@ -22,7 +21,7 @@ use zerocopy::IntoBytes;
 pub struct VirtIoBlkDevice<C> {
     irq: u32,
     irq_chip: Arc<dyn InterruptController>,
-    mm: Arc<Mutex<MemoryAddressSpace<C>>>,
+    mm: Arc<MemoryAddressSpace<C>>,
     cfg: VirtioBlkConfig,
 }
 
@@ -33,7 +32,7 @@ where
     pub fn new(
         irq: u32,
         irq_chip: Arc<dyn InterruptController>,
-        mm: Arc<Mutex<MemoryAddressSpace<C>>>,
+        mm: Arc<MemoryAddressSpace<C>>,
     ) -> Self {
         let cfg = VirtioBlkConfig {
             capacity: 50,
@@ -88,12 +87,12 @@ where
                     notify.notified().await;
 
                     let mut dev = dev.lock().unwrap();
-                    let mut mm = mm.lock().unwrap();
+
                     let q = dev.get_virt_queue_mut(queue_sel).unwrap();
 
-                    let avail_ring = q.avail_ring(&mut mm).unwrap();
-                    let desc_ring = q.desc_table_ref(&mut mm).unwrap();
-                    let mut used_ring = q.used_ring(&mut mm).unwrap();
+                    let avail_ring = q.avail_ring(&mm).unwrap();
+                    let desc_ring = q.desc_table_ref(&mm).unwrap();
+                    let mut used_ring = q.used_ring(&mm).unwrap();
 
                     let mut updated = false;
 
@@ -101,7 +100,7 @@ where
                         let last_available_idx = q.last_available_idx();
                         let desc_id = avail_ring.ring(last_available_idx);
                         let desc_entry = desc_ring.get(desc_id);
-                        let req = desc_entry.addr(&mut mm).unwrap();
+                        let req = desc_entry.addr(&mm).unwrap();
                         let req = unsafe { &*(req.as_ptr() as *const VirtioBlkReq) };
 
                         match req.r#type {
@@ -109,12 +108,12 @@ where
                                 let chains = desc_ring.get_chain(desc_id);
 
                                 let data = chains[1];
-                                let data_hva = data.addr(&mut mm).unwrap();
+                                let data_hva = data.addr(&mm).unwrap();
                                 let data_len = data.len;
                                 unsafe { data_hva.write_bytes(0xff, data_len.try_into().unwrap()) };
 
                                 let status = chains[2];
-                                let mut status_hva = status.addr(&mut mm).unwrap();
+                                let mut status_hva = status.addr(&mm).unwrap();
                                 *unsafe { status_hva.as_mut() } = 0;
 
                                 let used_idx = used_ring.idx();
diff --git a/crates/vm-machine/src/device.rs b/crates/vm-machine/src/device.rs
index 66d2d21..b074ff7 100644
--- a/crates/vm-machine/src/device.rs
+++ b/crates/vm-machine/src/device.rs
@@ -1,5 +1,4 @@
 use std::sync::Arc;
-use std::sync::Mutex;
 
 use vm_core::arch::irq::InterruptController;
 use vm_core::device::device_manager::DeviceManager;
@@ -18,7 +17,7 @@ use crate::error::Error;
 pub trait InitDevice {
     fn init_devices<C>(
         &mut self,
-        mm: Arc<Mutex<MemoryAddressSpace<C>>>,
+        mm: Arc<MemoryAddressSpace<C>>,
         devices: Vec<Device>,
         irq_chip: Option<Arc<dyn InterruptController>>,
     ) -> Result<(), Error>
@@ -29,7 +28,7 @@ pub trait InitDevice {
 impl InitDevice for DeviceManager {
     fn init_devices<C>(
         &mut self,
-        mm: Arc<Mutex<MemoryAddressSpace<C>>>,
+        mm: Arc<MemoryAddressSpace<C>>,
         devices: Vec<Device>,
         irq_chip: Option<Arc<dyn InterruptController>>,
     ) -> Result<(), Error>
diff --git a/crates/vm-machine/src/vm.rs b/crates/vm-machine/src/vm.rs
index 3854066..f8ef894 100644
--- a/crates/vm-machine/src/vm.rs
+++ b/crates/vm-machine/src/vm.rs
@@ -11,7 +11,7 @@ use crate::error::Error;
 use crate::error::Result;
 
 pub struct Vm<V: Virt> {
-    pub(crate) memory: Arc<Mutex<MemoryAddressSpace<V::Memory>>>,
+    pub(crate) memory: Arc<MemoryAddressSpace<V::Memory>>,
     pub(crate) virt: V,
     pub(crate) device_manager: Arc<Mutex<DeviceManager>>,
     pub(crate) gdb_stub: Option<GdbStub>,
@@ -23,13 +23,11 @@ where
 {
     pub fn run(&mut self, boot_loader: &dyn BootLoader<V>) -> Result<()> {
         {
-            let mut memory = self.memory.lock().unwrap();
-
             let device_manager = self.device_manager.lock().unwrap();
 
             boot_loader.load(
                 &mut self.virt,
-                &mut memory,
+                &self.memory,
                 device_manager
                     .get_irq_chip()
                     .ok_or_else(|| Error::InitIrqchip("irq_chip is not exists".to_string()))?
diff --git a/crates/vm-machine/src/vm_builder.rs b/crates/vm-machine/src/vm_builder.rs
index 372b865..a176184 100644
--- a/crates/vm-machine/src/vm_builder.rs
+++ b/crates/vm-machine/src/vm_builder.rs
@@ -43,7 +43,7 @@ impl VmBuilder {
 
         let mut memory_regions = MemoryAddressSpace::default();
         virt.init_memory(&mut memory_regions, self.memory_size)?;
-        let memory = Arc::new(Mutex::new(memory_regions));
+        let memory = Arc::new(memory_regions);
 
         let layout = virt.get_layout();
         let mmio_layout = MmioLayout::new(layout.get_mmio_start(), layout.get_mmio_len());
diff --git a/crates/vm-mm/src/allocator.rs b/crates/vm-mm/src/allocator.rs
index 4960b4a..c7e2064 100644
--- a/crates/vm-mm/src/allocator.rs
+++ b/crates/vm-mm/src/allocator.rs
@@ -3,7 +3,7 @@ use crate::error::Error;
 pub mod mmap_allocator;
 
 pub trait MemoryContainer: Send + Sync + 'static {
-    fn to_hva(&mut self) -> *mut u8;
+    fn to_hva(&self) -> *mut u8;
 }
 
 pub trait Allocator {
diff --git a/crates/vm-mm/src/allocator/mmap_allocator.rs b/crates/vm-mm/src/allocator/mmap_allocator.rs
index 3ec6cd2..cc0a26d 100644
--- a/crates/vm-mm/src/allocator/mmap_allocator.rs
+++ b/crates/vm-mm/src/allocator/mmap_allocator.rs
@@ -9,8 +9,8 @@ mod container {
     use crate::allocator::MemoryContainer;
 
     impl MemoryContainer for MmapMut {
-        fn to_hva(&mut self) -> *mut u8 {
-            self.as_mut_ptr()
+        fn to_hva(&self) -> *mut u8 {
+            self.as_ptr() as *mut u8
         }
     }
 }
diff --git a/crates/vm-mm/src/manager.rs b/crates/vm-mm/src/manager.rs
index 59f5177..f664b4b 100644
--- a/crates/vm-mm/src/manager.rs
+++ b/crates/vm-mm/src/manager.rs
@@ -40,8 +40,8 @@ where
         Ok(())
     }
 
-    pub fn gpa_to_hva(&mut self, gpa: u64) -> Result<*mut u8, Error> {
-        let region = self.try_get_region_by_gpa_mut(gpa)?;
+    pub fn gpa_to_hva(&self, gpa: u64) -> Result<*mut u8, Error> {
+        let region = self.try_get_region_by_gpa(gpa)?;
         let hva = region.to_hva();
 
         let offset = gpa - region.gpa;
@@ -49,8 +49,8 @@ where
         unsafe { Ok(hva.add(offset as usize)) }
     }
 
-    pub fn memset(&mut self, gpa: u64, val: u8, len: usize) -> Result<(), Error> {
-        let region = self.try_get_region_by_gpa_mut(gpa)?;
+    pub fn memset(&self, gpa: u64, val: u8, len: usize) -> Result<(), Error> {
+        let region = self.try_get_region_by_gpa(gpa)?;
         let hva = region.to_hva();
         let offset = gpa - region.gpa;
 
@@ -63,8 +63,8 @@ where
         Ok(())
     }
 
-    pub fn copy_from_slice(&mut self, gpa: u64, buf: &[u8], len: usize) -> Result<(), Error> {
-        let region = self.try_get_region_by_gpa_mut(gpa)?;
+    pub fn copy_from_slice(&self, gpa: u64, buf: &[u8], len: usize) -> Result<(), Error> {
+        let region = self.try_get_region_by_gpa(gpa)?;
         let hva = region.to_hva();
         let offset = gpa - region.gpa;
 
@@ -90,15 +90,15 @@ where
         })
     }
 
-    fn get_mut_by_gpa(&mut self, gpa: u64) -> Option<&mut MemoryRegion<C>> {
+    fn get_by_gpa(&self, gpa: u64) -> Option<&MemoryRegion<C>> {
         self.regions
-            .values_mut()
+            .values()
             .find(|region| gpa >= region.gpa && gpa < region.gpa + region.len as u64)
             .map(|v| v as _)
     }
 
-    fn try_get_region_by_gpa_mut(&mut self, gpa: u64) -> Result<&mut MemoryRegion<C>, Error> {
-        self.get_mut_by_gpa(gpa).ok_or(Error::AccessInvalidGpa(gpa))
+    fn try_get_region_by_gpa(&self, gpa: u64) -> Result<&MemoryRegion<C>, Error> {
+        self.get_by_gpa(gpa).ok_or(Error::AccessInvalidGpa(gpa))
     }
 }
 
@@ -144,7 +144,7 @@ mod tests {
         let mut memory_as = MemoryAddressSpace::<MmapMut>::default();
         let allocator = MmapAllocator;
 
-        let mut region = MemoryRegion::new(GPA, LEN, allocator.alloc(LEN, None)?);
+        let region = MemoryRegion::new(GPA, LEN, allocator.alloc(LEN, None)?);
 
         let hva = region.to_hva();
 
diff --git a/crates/vm-mm/src/region.rs b/crates/vm-mm/src/region.rs
index 35a703c..cfe2fed 100644
--- a/crates/vm-mm/src/region.rs
+++ b/crates/vm-mm/src/region.rs
@@ -14,7 +14,7 @@ where
         MemoryRegion { gpa, len, memory }
     }
 
-    pub fn to_hva(&mut self) -> *mut u8 {
+    pub fn to_hva(&self) -> *mut u8 {
         self.memory.to_hva()
     }
 }
diff --git a/crates/vm-virtio/src/virt_queue.rs b/crates/vm-virtio/src/virt_queue.rs
index 53bfdbb..f5a79a6 100644
--- a/crates/vm-virtio/src/virt_queue.rs
+++ b/crates/vm-virtio/src/virt_queue.rs
@@ -121,7 +121,7 @@ impl VirtQueue {
         }
     }
 
-    pub fn desc_table_ref<C>(&self, mm: &mut MemoryAddressSpace<C>) -> Result<VirtqDescTableRef>
+    pub fn desc_table_ref<C>(&self, mm: &MemoryAddressSpace<C>) -> Result<VirtqDescTableRef>
     where
         C: MemoryContainer,
     {
@@ -135,7 +135,7 @@ impl VirtQueue {
         Ok(VirtqDescTableRef::new(self.queue_size, hva))
     }
 
-    pub fn avail_ring<C>(&self, mm: &mut MemoryAddressSpace<C>) -> Result<VirtqAvail>
+    pub fn avail_ring<C>(&self, mm: &MemoryAddressSpace<C>) -> Result<VirtqAvail>
     where
         C: MemoryContainer,
     {
@@ -149,7 +149,7 @@ impl VirtQueue {
         Ok(VirtqAvail::new(self.queue_size, hva as *const u16))
     }
 
-    pub fn used_ring<C>(&self, mm: &mut MemoryAddressSpace<C>) -> Result<VirtqUsed>
+    pub fn used_ring<C>(&self, mm: &MemoryAddressSpace<C>) -> Result<VirtqUsed>
     where
         C: MemoryContainer,
     {
diff --git a/crates/vm-virtio/src/virt_queue/virtq_desc_table.rs b/crates/vm-virtio/src/virt_queue/virtq_desc_table.rs
index 8febbee..9126f6e 100644
--- a/crates/vm-virtio/src/virt_queue/virtq_desc_table.rs
+++ b/crates/vm-virtio/src/virt_queue/virtq_desc_table.rs
@@ -28,7 +28,7 @@ pub struct VirtqDesc {
 
 impl VirtqDesc {
     /// Get hva of the buf
-    pub fn addr<C>(&self, mm: &mut MemoryAddressSpace<C>) -> Result<NonNull<u8>>
+    pub fn addr<C>(&self, mm: &MemoryAddressSpace<C>) -> Result<NonNull<u8>>
     where
         C: MemoryContainer,
     {