From: Dov Murik <dovmurik@linux.vnet.ibm.com>

The mirror field indicates mirror VCPUs.  This will allow QEMU to act
differently on mirror VCPUs.

Signed-off-by: Dov Murik <dovmurik@linux.vnet.ibm.com>
Co-developed-by: Ashish Kalra <ashish.kalra@amd.com>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
---
 hw/core/cpu-common.c  | 1 +
 include/hw/core/cpu.h | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/hw/core/cpu-common.c b/hw/core/cpu-common.c
index e2f5a64604..99298f3a79 100644
--- a/hw/core/cpu-common.c
+++ b/hw/core/cpu-common.c
@@ -269,6 +269,7 @@ static Property cpu_common_props[] = {
                      MemoryRegion *),
 #endif
     DEFINE_PROP_BOOL("start-powered-off", CPUState, start_powered_off, false),
+    DEFINE_PROP_BOOL("mirror_vcpu", CPUState, mirror_vcpu, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index bc864564ce..a8f5f7862d 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -402,6 +402,9 @@ struct CPUState {
     /* shared by kvm, hax and hvf */
     bool vcpu_dirty;
 
+    /* does this cpu belong to mirror VM */
+    bool mirror_vcpu;
+
     /* Used to keep track of an outstanding cpu throttle thread for migration
      * autoconverge
      */
-- 
2.17.1