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openrisc: Only kick cpu on timeout, not on update

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Previously we were kicking the cpu on every update.  This caused
problems noticeable in SMP configurations where one CPU got pinned
continuously servicing timer exceptions.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Stafford Horne 2017-07-15 20:57:21 +09:00
parent 13f1c77364
commit 373b259b66
1 changed files with 1 additions and 1 deletions
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hw/openrisc/cputimer.c
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@ -78,7 +78,6 @@ void cpu_openrisc_timer_update(OpenRISCCPU *cpu)
}
next = now + (uint64_t)wait * TIMER_PERIOD;
timer_mod(cpu->env.timer, next);
qemu_cpu_kick(CPU(cpu));
}
void cpu_openrisc_count_start(OpenRISCCPU *cpu)
@ -120,6 +119,7 @@ static void openrisc_timer_cb(void *opaque)
}
cpu_openrisc_timer_update(cpu);
qemu_cpu_kick(CPU(cpu));
}
static const VMStateDescription vmstate_or1k_timer = {