- Fixes timeout for smpipi01 where:
+ Main thread sends perform jobs to worker cpu while it is already
performing jobs
+ Interrupt on worker cpu performs jobs, but with empty job list
+ Worker cpu continues to execut previous job and adds new job list
to itself, which is never performed, since the interrupt has already
been handled
+ Main thread blocks forever on barrier D
---
bsps/i386/pc386/start/smp-imps.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/bsps/i386/pc386/start/smp-imps.c b/bsps/i386/pc386/start/smp-imps.c
index de593f3c40..0985b8f08f 100644
--- a/bsps/i386/pc386/start/smp-imps.c
+++ b/bsps/i386/pc386/start/smp-imps.c
@@ -768,7 +768,17 @@ static void bsp_inter_processor_interrupt(void *arg)
smp_apic_ack();
+ /*
+ * Disallow nesting.
+ */
+ __asm__ __volatile__("cli");
+
_SMP_Inter_processor_interrupt_handler(_Per_CPU_Get());
+
+ /*
+ * Allow nesting.
+ */
+ __asm__ __volatile__("sti");
}
void
--
2.12.3
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