diff --git a/devices/src/pci/acpi.rs b/devices/src/pci/acpi.rs
index d969634e47..bcb5f166df 100644
--- a/devices/src/pci/acpi.rs
+++ b/devices/src/pci/acpi.rs
@@ -45,6 +45,14 @@ impl Aml for DeviceVcfgRegister {
             &4096_usize,
         )
         .to_aml_bytes(bytes);
+        aml::Field::new(
+            "VREG".into(),
+            aml::FieldAccessType::DWord,
+            aml::FieldLockRule::Lock,
+            aml::FieldUpdateRule::Preserve,
+            vec![aml::FieldEntry::Named(*b"PFPM", 32)],
+        )
+        .to_aml_bytes(bytes);
         aml::OpRegion::new(
             "SHAM".into(),
             aml::OpRegionSpace::SystemMemory,
@@ -58,3 +66,47 @@ impl Aml for DeviceVcfgRegister {
         .to_aml_bytes(bytes);
     }
 }
+
+pub struct PowerResourceMethod {}
+
+impl Aml for PowerResourceMethod {
+    fn to_aml_bytes(&self, aml: &mut Vec<u8>) {
+        aml::PowerResource::new(
+            "PRIC".into(),
+            0u8,
+            0u16,
+            vec![
+                &aml::Name::new("_STA".into(), &aml::ONE),
+                &aml::Method::new(
+                    "_ON_".into(),
+                    0,
+                    true,
+                    vec![
+                        &aml::Store::new(&aml::Name::new_field_name("PFPM"), &aml::ONE),
+                        &aml::Store::new(&aml::Name::new_field_name("_STA"), &aml::ONE),
+                    ],
+                ),
+                &aml::Method::new(
+                    "_OFF".into(),
+                    0,
+                    true,
+                    vec![
+                        &aml::Store::new(&aml::Name::new_field_name("_STA"), &aml::ZERO),
+                        &aml::Store::new(&aml::Name::new_field_name("PFPM"), &aml::ZERO),
+                    ],
+                ),
+            ],
+        )
+        .to_aml_bytes(aml);
+        aml::Name::new(
+            "_PR0".into(),
+            &aml::Package::new(vec![&aml::Name::new_field_name("PRIC")]),
+        )
+        .to_aml_bytes(aml);
+        aml::Name::new(
+            "_PR3".into(),
+            &aml::Package::new(vec![&aml::Name::new_field_name("PRIC")]),
+        )
+        .to_aml_bytes(aml);
+    }
+}
diff --git a/devices/src/pci/mod.rs b/devices/src/pci/mod.rs
index 3944c315c1..8c52b77b1b 100644
--- a/devices/src/pci/mod.rs
+++ b/devices/src/pci/mod.rs
@@ -42,6 +42,7 @@ pub use self::ac97::Ac97Dev;
 #[cfg(all(unix, feature = "audio"))]
 pub use self::ac97::Ac97Parameters;
 pub use self::acpi::DeviceVcfgRegister;
+pub use self::acpi::PowerResourceMethod;
 #[cfg(unix)]
 pub use self::coiommu::CoIommuDev;
 #[cfg(unix)]
diff --git a/devices/src/pci/vfio_pci.rs b/devices/src/pci/vfio_pci.rs
index 7ab97a56f8..31831b8ce0 100644
--- a/devices/src/pci/vfio_pci.rs
+++ b/devices/src/pci/vfio_pci.rs
@@ -51,6 +51,7 @@ use vm_control::VmRequest;
 use vm_control::VmResponse;
 
 use crate::pci::acpi::DeviceVcfgRegister;
+use crate::pci::acpi::PowerResourceMethod;
 use crate::pci::acpi::SHM_OFFSET;
 use crate::pci::msi::MsiConfig;
 use crate::pci::msi::MsiStatus;
@@ -2159,6 +2160,11 @@ impl PciDevice for VfioPciDevice {
                     .create_shm_mmap()
                     .map(|shm| (vcfg_offset + SHM_OFFSET, shm));
                 self.vcfg_shm_mmap = vcfg_register.create_shm_mmap();
+                // All vfio-pci devices should have virtual _PRx method, otherwise
+                // host couldn't know whether device has enter into suspend state,
+                // host would always think it is in active state, so its parent PCIe
+                // switch couldn't enter into suspend state.
+                PowerResourceMethod {}.to_aml_bytes(&mut amls);
             }
         }