diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2022-10-26 14:58:09 +1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-05-11 09:53:41 +0100 |
| commit | 9877ea05de9cdce6a5da87175d8455832f8148dc (patch) | |
| tree | 3d029b208685f8f3cd79c3fe756270a8daf1b4c2 /accel/tcg/cpu-exec-common.c | |
| parent | 1fceff9c3ca5960748f7346b3cd75e9d2620eaed (diff) | |
accel/tcg: Add cpu_in_serial_context
Like cpu_in_exclusive_context, but also true if
there is no other cpu against which we could race.
Use it in tb_flush as a direct replacement.
Use it in cpu_loop_exit_atomic to ensure that there
is no loop against cpu_exec_step_atomic.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'accel/tcg/cpu-exec-common.c')
| -rw-r--r-- | accel/tcg/cpu-exec-common.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/accel/tcg/cpu-exec-common.c b/accel/tcg/cpu-exec-common.c index e7962c9348..9a5fabf625 100644 --- a/accel/tcg/cpu-exec-common.c +++ b/accel/tcg/cpu-exec-common.c @@ -22,6 +22,7 @@ #include "sysemu/tcg.h" #include "exec/exec-all.h" #include "qemu/plugin.h" +#include "internal.h" bool tcg_allowed; @@ -81,6 +82,8 @@ void cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc) void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc) { + /* Prevent looping if already executing in a serial context. */ + g_assert(!cpu_in_serial_context(cpu)); cpu->exception_index = EXCP_ATOMIC; cpu_loop_exit_restore(cpu, pc); } |