From e5cb13588baf9cb6fca5891521e6b5f729eb1f94 Mon Sep 17 00:00:00 2001
From: Rob Bradford <robert.bradford@intel.com>
Date: Thu, 17 Mar 2022 12:33:04 +0000
Subject: [PATCH] vmm: cpu: Add concept of making CpuManager dynamic

If the CpuManager is dynamic it devices CPUs can be
hotplugged/unplugged.

Since TDX does not support CPU hotplug this is currently the only
determinator as to whether the CpuManager is dynamic.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
---
 vmm/src/cpu.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/vmm/src/cpu.rs b/vmm/src/cpu.rs
index 67161def9..6cf9b300b 100644
--- a/vmm/src/cpu.rs
+++ b/vmm/src/cpu.rs
@@ -418,6 +418,7 @@ pub struct CpuManager {
     #[cfg(feature = "acpi")]
     proximity_domain_per_cpu: BTreeMap<u8, u32>,
     affinity: BTreeMap<u8, Vec<u8>>,
+    dynamic: bool,
 }
 
 const CPU_ENABLE_FLAG: usize = 0;
@@ -626,6 +627,11 @@ impl CpuManager {
             BTreeMap::new()
         };
 
+        #[cfg(feature = "tdx")]
+        let dynamic = !tdx_enabled;
+        #[cfg(not(feature = "tdx"))]
+        let dynamic = true;
+
         let cpu_manager = Arc::new(Mutex::new(CpuManager {
             config: config.clone(),
             interrupt_controller: device_manager.interrupt_controller().clone(),
@@ -649,6 +655,7 @@ impl CpuManager {
             #[cfg(feature = "acpi")]
             proximity_domain_per_cpu,
             affinity,
+            dynamic,
         }));
 
         #[cfg(feature = "acpi")]