target/riscv/cpu.c: split non-ratified exts from riscv_cpu_extensions[]

Create a new riscv_cpu_experimental_exts[] to store the non-ratified
extensions properties. Once they are ratified we'll move them back to
riscv_cpu_extensions[].

riscv_cpu_add_user_properties() and riscv_cpu_add_kvm_properties() are
changed to keep adding non-ratified properties to users.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-ID: <20230901194627.1214811-6-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.c

@@ -1881,8 +1881,11 @@ static Property riscv_cpu_extensions[] = {
     DEFINE_PROP_BOOL("xtheadsync", RISCVCPU, cfg.ext_xtheadsync, false),
     DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false),
 
-    /* These are experimental so mark with 'x-' */
+    DEFINE_PROP_END_OF_LIST(),
+};
 
+/* These are experimental so mark with 'x-' */
+static Property riscv_cpu_experimental_exts[] = {
     /* ePMP 0.9.3 */
     DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
     DEFINE_PROP_BOOL("x-smaia", RISCVCPU, cfg.ext_smaia, false),
@@ -1975,6 +1978,10 @@ static void riscv_cpu_add_kvm_properties(Object *obj)
         riscv_cpu_add_kvm_unavail_prop(obj, prop->name);
     }
 
+    for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) {
+        riscv_cpu_add_kvm_unavail_prop(obj, prop->name);
+    }
+
     for (prop = riscv_cpu_options; prop && prop->name; prop++) {
         /* Check if KVM created the property already */
         if (object_property_find(obj, prop->name)) {
@@ -2014,6 +2021,10 @@ static void riscv_cpu_add_user_properties(Object *obj)
     for (prop = riscv_cpu_options; prop && prop->name; prop++) {
         qdev_property_add_static(dev, prop);
     }
+
+    for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) {
+        qdev_property_add_static(dev, prop);
+    }
 }
 
 static Property riscv_cpu_properties[] = {