[PATCH v2 02/41] accel/tcg: Move clear_helper_retaddr to cpu loop

From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu
Subject: [PATCH v2 02/41] accel/tcg: Move clear_helper_retaddr to cpu loop
Date: Sat, 18 Sep 2021 11:44:48 -0700	[thread overview]
Message-ID: <20210918184527.408540-3-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210918184527.408540-1-richard.henderson@linaro.org>

Currently there are only two places that require we reset this
value before exiting to the main loop, but that will change.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 accel/tcg/cpu-exec.c  | 3 ++-
 accel/tcg/user-exec.c | 2 --
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 5fd1ed3422..410588d08a 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -451,6 +451,7 @@ void cpu_exec_step_atomic(CPUState *cpu)
          * memory.
          */
 #ifndef CONFIG_SOFTMMU
+        clear_helper_retaddr();
         tcg_debug_assert(!have_mmap_lock());
 #endif
         if (qemu_mutex_iothread_locked()) {
@@ -460,7 +461,6 @@ void cpu_exec_step_atomic(CPUState *cpu)
         qemu_plugin_disable_mem_helpers(cpu);
     }
 
-
     /*
      * As we start the exclusive region before codegen we must still
      * be in the region if we longjump out of either the codegen or
@@ -905,6 +905,7 @@ int cpu_exec(CPUState *cpu)
 #endif
 
 #ifndef CONFIG_SOFTMMU
+        clear_helper_retaddr();
         tcg_debug_assert(!have_mmap_lock());
 #endif
         if (qemu_mutex_iothread_locked()) {
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index cef025d001..e94f1fed00 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -175,7 +175,6 @@ static inline int handle_cpu_signal(uintptr_t pc, siginfo_t *info,
              * currently executing TB was modified and must be exited
              * immediately.  Clear helper_retaddr for next execution.
              */
-            clear_helper_retaddr();
             cpu_exit_tb_from_sighandler(cpu, old_set);
             /* NORETURN */
 
@@ -193,7 +192,6 @@ static inline int handle_cpu_signal(uintptr_t pc, siginfo_t *info,
      * an exception.  Undo signal and retaddr state prior to longjmp.
      */
     sigprocmask(SIG_SETMASK, old_set, NULL);
-    clear_helper_retaddr();
 
     cc = CPU_GET_CLASS(cpu);
     cc->tcg_ops->tlb_fill(cpu, address, 0, access_type,
-- 
2.25.1


