The features shown in cpucfg3 mostly are relative with cache capability,
QEMU does not support cache emulation and discard these features.
However it will be better if it is the same with host machine.

Here add default cpucfg3 feature information with LA464 CPU.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
 target/loongarch/cpu.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 24c8df1e37..c6787901e2 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -321,6 +321,22 @@ static void loongarch_la464_initfn(Object *obj)
     data = FIELD_DP32(data, CPUCFG2, LAM, 1);
     env->cpucfg[2] = data;
 
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG3, CCDMA, 1);
+    data = FIELD_DP32(data, CPUCFG3, UCACC, 1);
+    data = FIELD_DP32(data, CPUCFG3, LLEXC, 1);
+    data = FIELD_DP32(data, CPUCFG3, SCDLY, 1);
+    data = FIELD_DP32(data, CPUCFG3, LLDBAR, 1);
+    data = FIELD_DP32(data, CPUCFG3, ITLBHMC, 1);
+    data = FIELD_DP32(data, CPUCFG3, ICHMC, 1);
+    data = FIELD_DP32(data, CPUCFG3, SPW_LVL, 4);
+    data = FIELD_DP32(data, CPUCFG3, SPW_HP_HF, 1);
+    if (kvm_enabled()) {
+        data = FIELD_DP32(data, CPUCFG3, RVA, 1);
+        data = FIELD_DP32(data, CPUCFG3, RVAMAX, 7);
+    }
+    env->cpucfg[3] = data;
+
     env->cpucfg[4] = 100 * 1000 * 1000; /* Crystal frequency */
 
     data = 0;
-- 
2.39.3