Commit 0eca13c29a for qemu.org

commit 0eca13c29a0823850cf3308528b0de0ed4608c02
Author: Philippe Mathieu-Daudé <philmd@linaro.org>
Date:   Fri Mar 21 12:18:26 2025 +0100

    tcg: Have tcg_req_mo() use TCGCPUOps::guest_default_memory_order

    In order to use TCG with multiple targets, replace the
    compile time use of TCG_GUEST_DEFAULT_MO by a runtime access
    to TCGCPUOps::guest_default_memory_order via CPUState.

    Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
    Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
    Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/accel/tcg/internal-target.h b/accel/tcg/internal-target.h
index 23aac39b57..f5a3fd7e40 100644
--- a/accel/tcg/internal-target.h
+++ b/accel/tcg/internal-target.h
@@ -46,16 +46,15 @@ G_NORETURN void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr);

 /**
  * tcg_req_mo:
+ * @guest_mo: Guest default memory order
  * @type: TCGBar
  *
  * Filter @type to the barrier that is required for the guest
  * memory ordering vs the host memory ordering.  A non-zero
  * result indicates that some barrier is required.
- *
- * This is a macro so that it's constant even without optimization.
  */
-#define tcg_req_mo(type) \
-    ((type) & TCG_GUEST_DEFAULT_MO & ~TCG_TARGET_DEFAULT_MO)
+#define tcg_req_mo(guest_mo, type) \
+    ((type) & guest_mo & ~TCG_TARGET_DEFAULT_MO)

 /**
  * cpu_req_mo:
@@ -67,7 +66,7 @@ G_NORETURN void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr);
  */
 #define cpu_req_mo(cpu, type)     \
     do {                          \
-        if (tcg_req_mo(type)) {   \
+        if (tcg_req_mo(cpu->cc->tcg_ops->guest_default_memory_order, type)) { \
             smp_mb();             \
         }                         \
     } while (0)