diff --git a/src/dragonball/dbs_acpi/src/rsdp.rs b/src/dragonball/dbs_acpi/src/rsdp.rs
index 05c36f809..5ded2edb0 100644
--- a/src/dragonball/dbs_acpi/src/rsdp.rs
+++ b/src/dragonball/dbs_acpi/src/rsdp.rs
@@ -5,7 +5,7 @@
 // RSDP (Root System Description Pointer) is a data structure used in the ACPI programming interface.
 use vm_memory::ByteValued;
 
-#[repr(packed)]
+#[repr(Rust, packed)]
 #[derive(Clone, Copy, Default)]
 pub struct Rsdp {
     pub signature: [u8; 8],
diff --git a/src/dragonball/dbs_acpi/src/sdt.rs b/src/dragonball/dbs_acpi/src/sdt.rs
index f6a79f576..62d463458 100644
--- a/src/dragonball/dbs_acpi/src/sdt.rs
+++ b/src/dragonball/dbs_acpi/src/sdt.rs
@@ -2,7 +2,7 @@
 // Copyright (c) 2023 Alibaba Cloud
 //
 // SPDX-License-Identifier: Apache-2.0
-#[repr(packed)]
+#[repr(Rust, packed)]
 pub struct GenericAddress {
     pub address_space_id: u8,
     pub register_bit_width: u8,
diff --git a/src/dragonball/dbs_pci/src/msi.rs b/src/dragonball/dbs_pci/src/msi.rs
index b6741a7fa..560cccbba 100644
--- a/src/dragonball/dbs_pci/src/msi.rs
+++ b/src/dragonball/dbs_pci/src/msi.rs
@@ -463,7 +463,7 @@ impl PciCapability for MsiCap {
 }
 
 /// Struct to manage PCI Message Signalled Interrupt controller working state.
-#[repr(packed)]
+#[repr(Rust, packed)]
 #[derive(Clone, Copy, Default, PartialEq)]
 pub struct MsiState {
     msg_ctl: u16,
diff --git a/src/dragonball/dbs_pci/src/msix.rs b/src/dragonball/dbs_pci/src/msix.rs
index e912fd945..8d3f0f30c 100644
--- a/src/dragonball/dbs_pci/src/msix.rs
+++ b/src/dragonball/dbs_pci/src/msix.rs
@@ -32,7 +32,7 @@ pub const MSIX_TABLE_ENTRIES_MODULO: u64 = 16;
 /// This struct is the shadow copy of the PCI MSI-x capability. Guest device drivers read from/write
 /// to this struct. There's another struct MsixState, which maintains the working state about the
 /// PCI MSI-x controller.
-#[repr(packed)]
+#[repr(Rust, packed)]
 #[derive(Clone, Copy, Default, PartialEq)]
 pub struct MsixCap {
     // Capability ID