User-mode emulation correctly uses cpu_exit() whenever it needs to go
all the way out of the cpu exec loop. It never uses qemu_cpu_kick();
therefore, there is no need for tcg_kick_vcpu_thread() to set
cpu->exit_request again.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
accel/tcg/cpu-exec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 1a973596d87..b9da2e3770e 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -750,6 +750,7 @@ static inline bool cpu_handle_exception(CPUState *cpu, int
*ret)
void tcg_kick_vcpu_thread(CPUState *cpu)
{
+#ifdef CONFIG_SYSTEM
/*
* Ensure cpu_exec will see the reason why the exit request was set.
* FIXME: this is not always needed. Other accelerators instead
@@ -757,6 +758,7 @@ void tcg_kick_vcpu_thread(CPUState *cpu)
* CPU thread; see kvm_arch_pre_run() for example.
*/
qatomic_store_release(&cpu->exit_request, 1);
+#endif
/* Ensure cpu_exec will see the exit request after TCG has exited. */
qatomic_store_release(&cpu->neg.icount_decr.u16.high, -1);
--
2.50.1
