Commit f9870fe1ec for qemu.org

commit f9870fe1ec40dba64baeafa7a8b7c4763afd1673
Author: Bibo Mao <maobibo@loongson.cn>
Date:   Thu Oct 30 16:17:24 2025 +0800

    target/loongarch: Add PMU register dump support in KVM

    PMU is supported in KVM mode. With info registers command, PMU CSR
    registers should be dumped also. And it is not necessary in TCG mode.

    Signed-off-by: Bibo Mao <maobibo@loongson.cn>
    Reviewed-by: Song Gao <gaosong@loongson.cn>

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 67ad9c3b79..b653948526 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -129,6 +129,11 @@ static void loongarch_la464_init_csr(DeviceState *dev)
         set_csr_flag(LOONGARCH_CSR_MERRERA, CSRFL_UNUSED);
         set_csr_flag(LOONGARCH_CSR_MERRSAVE, CSRFL_UNUSED);
         set_csr_flag(LOONGARCH_CSR_CTAG, CSRFL_UNUSED);
+
+        for (i = env->perf_event_num; i < MAX_PERF_EVENTS; i++) {
+            set_csr_flag(LOONGARCH_CSR_PERFCTRL(i), CSRFL_UNUSED);
+            set_csr_flag(LOONGARCH_CSR_PERFCNTR(i), CSRFL_UNUSED);
+        }
     }
 #endif
 }
diff --git a/target/loongarch/csr.c b/target/loongarch/csr.c
index f973780bba..332a1396cc 100644
--- a/target/loongarch/csr.c
+++ b/target/loongarch/csr.c
@@ -94,6 +94,38 @@ static CSRInfo csr_info[] = {
     CSR_OFF_ARRAY(DMW, 1),
     CSR_OFF_ARRAY(DMW, 2),
     CSR_OFF_ARRAY(DMW, 3),
+    CSR_OFF_ARRAY(PERFCTRL, 0),
+    CSR_OFF_ARRAY(PERFCNTR, 0),
+    CSR_OFF_ARRAY(PERFCTRL, 1),
+    CSR_OFF_ARRAY(PERFCNTR, 1),
+    CSR_OFF_ARRAY(PERFCTRL, 2),
+    CSR_OFF_ARRAY(PERFCNTR, 2),
+    CSR_OFF_ARRAY(PERFCTRL, 3),
+    CSR_OFF_ARRAY(PERFCNTR, 3),
+    CSR_OFF_ARRAY(PERFCTRL, 4),
+    CSR_OFF_ARRAY(PERFCNTR, 4),
+    CSR_OFF_ARRAY(PERFCTRL, 5),
+    CSR_OFF_ARRAY(PERFCNTR, 5),
+    CSR_OFF_ARRAY(PERFCTRL, 6),
+    CSR_OFF_ARRAY(PERFCNTR, 6),
+    CSR_OFF_ARRAY(PERFCTRL, 7),
+    CSR_OFF_ARRAY(PERFCNTR, 7),
+    CSR_OFF_ARRAY(PERFCTRL, 8),
+    CSR_OFF_ARRAY(PERFCNTR, 8),
+    CSR_OFF_ARRAY(PERFCTRL, 9),
+    CSR_OFF_ARRAY(PERFCNTR, 9),
+    CSR_OFF_ARRAY(PERFCTRL, 10),
+    CSR_OFF_ARRAY(PERFCNTR, 10),
+    CSR_OFF_ARRAY(PERFCTRL, 11),
+    CSR_OFF_ARRAY(PERFCNTR, 11),
+    CSR_OFF_ARRAY(PERFCTRL, 12),
+    CSR_OFF_ARRAY(PERFCNTR, 12),
+    CSR_OFF_ARRAY(PERFCTRL, 13),
+    CSR_OFF_ARRAY(PERFCNTR, 13),
+    CSR_OFF_ARRAY(PERFCTRL, 14),
+    CSR_OFF_ARRAY(PERFCNTR, 14),
+    CSR_OFF_ARRAY(PERFCTRL, 15),
+    CSR_OFF_ARRAY(PERFCNTR, 15),
     CSR_OFF(DBG),
     CSR_OFF(DERA),
     CSR_OFF(DSAVE),