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[RFC,10/10] cpus: Do not sleep if some work item is pending

Message ID 20160526163549.3276-11-a.rigo@virtualopensystems.com (mailing list archive)
State New, archived
Headers show

Commit Message

alvise rigo May 26, 2016, 4:35 p.m. UTC 
If a VCPU returns EXCP_HALTED from the guest code execution and in the
mean time receives a work item, it will go to sleep without processing
the job.

Before sleeping, check if any work has been added.

Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
---
 cpus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/cpus.c b/cpus.c
index 7bc96e2..3d19a2e 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1477,7 +1477,7 @@  static void *qemu_tcg_cpu_thread_fn(void *arg)
 
         handle_icount_deadline();
 
-        if (sleep) {
+        if (sleep && cpu->queued_work_first == NULL) {
             qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
         }