[PATCH 7/9] reuse env stop and stopped states

[Glauber Costa <glommer@xxxxxxxxxx>]

qemu CPUState already provides "stop" and "stopped" states. And they
mean exactly that. There is no need for us to provide our own.

Signed-off-by: Glauber Costa <glommer@xxxxxxxxxx>
---
 cpu-defs.h |    2 --
 qemu-kvm.c |   30 ++++++++++++------------------
 vl.c       |    2 +-
 3 files changed, 13 insertions(+), 21 deletions(-)

diff --git a/cpu-defs.h b/cpu-defs.h
index 7570096..fce366f 100644
--- a/cpu-defs.h
+++ b/cpu-defs.h
@@ -142,8 +142,6 @@ struct qemu_work_item;
 struct KVMCPUState {
     pthread_t thread;
     int signalled;
-    int stop;
-    int stopped;
     int created;
     void *vcpu_ctx;
     struct qemu_work_item *queued_work_first, *queued_work_last;
diff --git a/qemu-kvm.c b/qemu-kvm.c
index 58d5de2..6d556b8 100644
--- a/qemu-kvm.c
+++ b/qemu-kvm.c
@@ -91,7 +91,7 @@ static int kvm_debug(void *opaque, void *data,
 
     if (handle) {
 	kvm_debug_cpu_requested = env;
-	env->kvm_cpu_state.stopped = 1;
+	env->stopped = 1;
     }
     return handle;
 }
@@ -979,7 +979,7 @@ int handle_halt(kvm_vcpu_context_t vcpu)
 int handle_shutdown(kvm_context_t kvm, CPUState *env)
 {
     /* stop the current vcpu from going back to guest mode */
-    env->kvm_cpu_state.stopped = 1;
+    env->stopped = 1;
 
     qemu_system_reset_request();
     return 1;
@@ -1817,7 +1817,7 @@ int kvm_cpu_exec(CPUState *env)
 
 static int is_cpu_stopped(CPUState *env)
 {
-    return !vm_running || env->kvm_cpu_state.stopped;
+    return !vm_running || env->stopped;
 }
 
 static void flush_queued_work(CPUState *env)
@@ -1863,9 +1863,9 @@ static void kvm_main_loop_wait(CPUState *env, int timeout)
     cpu_single_env = env;
     flush_queued_work(env);
 
-    if (env->kvm_cpu_state.stop) {
-	env->kvm_cpu_state.stop = 0;
-	env->kvm_cpu_state.stopped = 1;
+    if (env->stop) {
+	env->stop = 0;
+	env->stopped = 1;
 	pthread_cond_signal(&qemu_pause_cond);
     }
 
@@ -1877,7 +1877,7 @@ static int all_threads_paused(void)
     CPUState *penv = first_cpu;
 
     while (penv) {
-        if (penv->kvm_cpu_state.stop)
+        if (penv->stop)
             return 0;
         penv = (CPUState *)penv->next_cpu;
     }
@@ -1891,11 +1891,11 @@ static void pause_all_threads(void)
 
     while (penv) {
         if (penv != cpu_single_env) {
-            penv->kvm_cpu_state.stop = 1;
+            penv->stop = 1;
             pthread_kill(penv->kvm_cpu_state.thread, SIG_IPI);
         } else {
-            penv->kvm_cpu_state.stop = 0;
-            penv->kvm_cpu_state.stopped = 1;
+            penv->stop = 0;
+            penv->stopped = 1;
             cpu_exit(penv);
         }
         penv = (CPUState *)penv->next_cpu;
@@ -1912,8 +1912,8 @@ static void resume_all_threads(void)
     assert(!cpu_single_env);
 
     while (penv) {
-        penv->kvm_cpu_state.stop = 0;
-        penv->kvm_cpu_state.stopped = 0;
+        penv->stop = 0;
+        penv->stopped = 0;
         pthread_kill(penv->kvm_cpu_state.thread, SIG_IPI);
         penv = (CPUState *)penv->next_cpu;
     }
@@ -2698,12 +2698,6 @@ int kvm_log_stop(target_phys_addr_t phys_addr, target_phys_addr_t len)
     return 0;
 }
 
-void qemu_kvm_cpu_stop(CPUState *env)
-{
-    if (kvm_enabled())
-        env->kvm_cpu_state.stopped = 1;
-}
-
 int kvm_set_boot_cpu_id(uint32_t id)
 {
 	return kvm_set_boot_vcpu_id(kvm_context, id);
diff --git a/vl.c b/vl.c
index 92ae881..32134a2 100644
--- a/vl.c
+++ b/vl.c
@@ -3553,7 +3553,7 @@ void qemu_system_reset_request(void)
         reset_requested = 1;
     }
     if (cpu_single_env) {
-        qemu_kvm_cpu_stop(cpu_single_env);
+        cpu_single_env->stopped = 1;
     }
     qemu_notify_event();
 }
-- 
1.6.2.2

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