On 06/18/2009 03:22 PM, Gleb Natapov wrote:
Rearrange cpu loop to be (hopefully) more readable. Put difference
between kernel/userspace irqchip in one place.
static void flush_queued_work(CPUState *env)
@@ -1877,6 +1871,8 @@ static void update_regs_for_init(CPUState *env)
#endif
cpu_reset(env);
+ /* cpu_reset() clears env->halted, cpu should be halted after init */
+ env->halted = 1;
How does that work for the boot cpu?
static int kvm_main_loop_cpu(CPUState *env)
{
setup_kernel_sigmask(env);
@@ -1935,19 +1941,14 @@ static int kvm_main_loop_cpu(CPUState *env)
kvm_arch_load_regs(env);
while (1) {
- while (!has_work(env))
- kvm_main_loop_wait(env, 1000);
- if (env->interrupt_request& (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI))
- env->halted = 0;
- if (!kvm_irqchip_in_kernel(kvm_context)) {
- if (env->kvm_cpu_state.init)
- update_regs_for_init(env);
- if (env->kvm_cpu_state.sipi_needed)
- update_regs_for_sipi(env);
+ int run_cpu = is_cpu_stopped(env) ? 0 : 1;
run_cpu = !is_cpu_stopped()
+ if (run_cpu&& !kvm_irqchip_in_kernel(kvm_context)) {
+ process_irqchip_events(env);
+ run_cpu = !env->halted;
}
- if (!env->halted || kvm_irqchip_in_kernel(kvm_context))
- kvm_cpu_exec(env);
- kvm_main_loop_wait(env, 0);
+ kvm_main_loop_wait(env, run_cpu ? 0 : 1000);
+ if (run_cpu)
+ kvm_cpu_exec(env);
}
A single conditional may be clearer:
if (run_cpu)
kvm_main_loop_wait(0)
kvm_cpu_exec()
else
kvm_main_loop_wait(1000)
--
error compiling committee.c: too many arguments to function
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