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-rw-r--r--target/i386/machine.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/target/i386/machine.c b/target/i386/machine.c
index 2767b3096d..6481f846f6 100644
--- a/target/i386/machine.c
+++ b/target/i386/machine.c
@@ -943,6 +943,25 @@ static const VMStateDescription vmstate_xss = {
     }
 };
 
+static bool umwait_needed(void *opaque)
+{
+    X86CPU *cpu = opaque;
+    CPUX86State *env = &cpu->env;
+
+    return env->umwait != 0;
+}
+
+static const VMStateDescription vmstate_umwait = {
+    .name = "cpu/umwait",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = umwait_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(env.umwait, X86CPU),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 #ifdef TARGET_X86_64
 static bool pkru_needed(void *opaque)
 {
@@ -1391,6 +1410,7 @@ VMStateDescription vmstate_x86_cpu = {
         &vmstate_msr_hyperv_reenlightenment,
         &vmstate_avx512,
         &vmstate_xss,
+        &vmstate_umwait,
         &vmstate_tsc_khz,
         &vmstate_msr_smi_count,
 #ifdef TARGET_X86_64