cpu-exec: reset exception_index correctly

Exception index is reset at every entry at every entry into cpu_exec()
function. This may cause missing the exceptions while replaying them.
This patch moves exception_index reset to the locations where they are
processed.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/cpus.c b/cpus.c
index 0c33458bb1..91119bb864 100644
--- a/cpus.c
+++ b/cpus.c
@@ -934,6 +934,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
     qemu_mutex_lock(&qemu_global_mutex);
     qemu_thread_get_self(cpu->thread);
     cpu->thread_id = qemu_get_thread_id();
+    cpu->exception_index = -1;
     current_cpu = cpu;
 
     r = kvm_init_vcpu(cpu);
@@ -974,6 +975,7 @@ static void *qemu_dummy_cpu_thread_fn(void *arg)
     qemu_mutex_lock_iothread();
     qemu_thread_get_self(cpu->thread);
     cpu->thread_id = qemu_get_thread_id();
+    cpu->exception_index = -1;
 
     sigemptyset(&waitset);
     sigaddset(&waitset, SIG_IPI);
@@ -1016,6 +1018,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
     CPU_FOREACH(cpu) {
         cpu->thread_id = qemu_get_thread_id();
         cpu->created = true;
+        cpu->exception_index = -1;
     }
     qemu_cond_signal(&qemu_cpu_cond);