[PATCH] target/riscv/tcg: do not set defaults for non-generic

[Vladimir Isaev <vladimir.isaev@syntacore.com>]

riscv_cpu_options[] are exported using qdev and some of them are defined
with default values. This is unfortunate since riscv_cpu_add_user_properties()
is called after CPU instance init and there is no clear way to disable MMU/PMP
for some CPUs.

Can't define them as NODEFAULT since we still need defaults for generic CPU.

Signed-off-by: Vladimir Isaev <vladimir.isaev@syntacore.com>
---
 target/riscv/tcg/tcg-cpu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 8a35683a345d..9ffce1c9f7b0 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -937,6 +937,8 @@ static void riscv_cpu_add_multiext_prop_array(Object *obj,
  */
 static void riscv_cpu_add_user_properties(Object *obj)
 {
+    bool use_def_vals = riscv_cpu_is_generic(obj);
+
 #ifndef CONFIG_USER_ONLY
     riscv_add_satp_mode_properties(obj);
 #endif
@@ -950,6 +952,8 @@ static void riscv_cpu_add_user_properties(Object *obj)
     riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_deprecated_exts);
 
     for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) {
+        prop->set_default = prop->set_default && use_def_vals;
+
         qdev_property_add_static(DEVICE(obj), prop);
     }
 }
-- 
2.43.0