From: Emilio G. Cota <cota@braap.org>
Date: Sat, 2 Dec 2017 00:47:08 +0000 (-0500)
Subject: translate-all: use cpu_in_exclusive_work_context() in tb_flush
X-Git-Tag: v4.2.0-rc0~20^2~53
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=136094d0b22a3278029485648e4d83a4bf3cb4d6;p=thirdparty%2Fqemu.git

translate-all: use cpu_in_exclusive_work_context() in tb_flush

tb_flush will be called by the plugin module from a safe
work environment. Prepare for that.

Suggested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index 66d4bc4341a..0a08fcda3e8 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1268,8 +1268,13 @@ void tb_flush(CPUState *cpu)
 {
     if (tcg_enabled()) {
         unsigned tb_flush_count = atomic_mb_read(&tb_ctx.tb_flush_count);
-        async_safe_run_on_cpu(cpu, do_tb_flush,
-                              RUN_ON_CPU_HOST_INT(tb_flush_count));
+
+        if (cpu_in_exclusive_context(cpu)) {
+            do_tb_flush(cpu, RUN_ON_CPU_HOST_INT(tb_flush_count));
+        } else {
+            async_safe_run_on_cpu(cpu, do_tb_flush,
+                                  RUN_ON_CPU_HOST_INT(tb_flush_count));
+        }
     }
 }