From 98dac352b8d6b8bb19fce65db0877e02c12d9bb6 Mon Sep 17 00:00:00 2001
From: Sebastien Boeuf <sebastien.boeuf@intel.com>
Date: Mon, 11 May 2020 17:21:25 +0200
Subject: [PATCH] vmm: Add optional PCI b/d/f to each DeviceNode

We need a way to store the information about where a PCI device was
placed on the PCI bus before the VM was snapshotted. The way to do this
is by adding an extra field to the DeviceNode structure.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
---
 vmm/src/device_tree.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/vmm/src/device_tree.rs b/vmm/src/device_tree.rs
index 187d1f192..c062db683 100644
--- a/vmm/src/device_tree.rs
+++ b/vmm/src/device_tree.rs
@@ -15,6 +15,8 @@ pub struct DeviceNode {
     pub children: Vec<String>,
     #[serde(skip)]
     pub migratable: Option<Arc<Mutex<dyn Migratable>>>,
+    #[cfg(feature = "pci_support")]
+    pub pci_bdf: Option<u32>,
 }
 
 impl DeviceNode {
@@ -25,6 +27,8 @@ impl DeviceNode {
             parent: None,
             children: Vec::new(),
             migratable,
+            #[cfg(feature = "pci_support")]
+            pci_bdf: None,
         }
     }
 }