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do not use timedwait on qemu_halt_cond

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The following conditions can cause cpu_has_work(env) to become true:

- env->queued_work_first: run_on_cpu is already kicking the VCPU

- env->stop = 1: pause_all_vcpus is already kicking the VCPU

- env->stopped = 0: resume_all_vcpus is already kicking the VCPU

- vm_running = 1: vm_start is calling resume_all_vcpus

- env->halted = 0: see previous patch

- qemu_cpu_has_work(env): when it becomes true, board code should set
  env->halted = 0 too.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Paolo Bonzini 2011-03-12 17:44:00 +01:00 committed by Blue Swirl
parent 67bb172f9d
commit 9705fbb563
1 changed files with 2 additions and 2 deletions
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4
cpus.c
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@ -771,7 +771,7 @@ static void qemu_tcg_wait_io_event(void)
CPUState *env;
while (all_cpu_threads_idle()) {
qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000);
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
}
qemu_mutex_unlock(&qemu_global_mutex);
@ -794,7 +794,7 @@ static void qemu_tcg_wait_io_event(void)
static void qemu_kvm_wait_io_event(CPUState *env)
{
while (cpu_thread_is_idle(env)) {
qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
qemu_cond_wait(env->halt_cond, &qemu_global_mutex);
}
qemu_kvm_eat_signals(env);