[COMMIT master] Don't call kvm_cpu_synchronize_state() if there is no irqchip events to process

[Avi Kivity]

From: Gleb Natapov <g...@redhat.com>

Signed-off-by: Gleb Natapov <g...@redhat.com>
Signed-off-by: Avi Kivity <a...@redhat.com>

diff --git a/qemu-kvm-x86.c b/qemu-kvm-x86.c
index 32561f0..acb1b91 100644
--- a/qemu-kvm-x86.c
+++ b/qemu-kvm-x86.c
@@ -1673,9 +1673,12 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, 
uint32_t function,
 
 void kvm_arch_process_irqchip_events(CPUState *env)
 {
-    kvm_cpu_synchronize_state(env);
-    if (env->interrupt_request & CPU_INTERRUPT_INIT)
+    if (env->interrupt_request & CPU_INTERRUPT_INIT) {
+        kvm_cpu_synchronize_state(env);
         do_cpu_init(env);
-    if (env->interrupt_request & CPU_INTERRUPT_SIPI)
+    }
+    if (env->interrupt_request & CPU_INTERRUPT_SIPI) {
+        kvm_cpu_synchronize_state(env);
         do_cpu_sipi(env);
+    }
 }
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