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cpu-exec: reset exception_index correctly

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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>
This commit is contained in:
Pavel Dovgalyuk 2014-11-26 13:39:20 +03:00 committed by Paolo Bonzini
parent b4ac20b4df
commit e511b4d783
2 changed files with 5 additions and 1 deletions
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3
cpu-exec.c
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@ -358,7 +358,6 @@ int cpu_exec(CPUArchState *env)
}
cc->cpu_exec_enter(cpu);
cpu->exception_index = -1;
/* Calculate difference between guest clock and host clock.
* This delay includes the delay of the last cycle, so
@ -378,6 +377,7 @@ int cpu_exec(CPUArchState *env)
if (ret == EXCP_DEBUG) {
cpu_handle_debug_exception(env);
}
cpu->exception_index = -1;
break;
} else {
#if defined(CONFIG_USER_ONLY)
@ -388,6 +388,7 @@ int cpu_exec(CPUArchState *env)
cc->do_interrupt(cpu);
#endif
ret = cpu->exception_index;
cpu->exception_index = -1;
break;
#else
cc->do_interrupt(cpu);

3
cpus.c
View File

@ -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);