diff --git a/.github/workflows/gem5-ideal-btb-0.3c.yml b/.github/workflows/gem5-ideal-btb-0.3c.yml
index 79a9aeea64..03e96e8c79 100644
--- a/.github/workflows/gem5-ideal-btb-0.3c.yml
+++ b/.github/workflows/gem5-ideal-btb-0.3c.yml
@@ -16,5 +16,5 @@ jobs:
   perf_test:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_btb.sh
-      benchmark_type: "spec06-0.3c"
\ No newline at end of file
+      config_path: configs/example/kmhv3.py
+      benchmark_type: "spec06-0.3c"
diff --git a/.github/workflows/gem5-ideal-btb-perf-weekly.yml b/.github/workflows/gem5-ideal-btb-perf-weekly.yml
index 0c990b8205..9d2b700b4b 100644
--- a/.github/workflows/gem5-ideal-btb-perf-weekly.yml
+++ b/.github/workflows/gem5-ideal-btb-perf-weekly.yml
@@ -11,31 +11,24 @@ jobs:
   align_test_spec06:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_btb.sh
+      config_path: configs/example/kmhv3.py
       benchmark_type: "spec06-1.0c"
 
   align_test_spec17:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_btb.sh
+      config_path: configs/example/kmhv3.py
       benchmark_type: "spec17-1.0c"
 
   perf_test_spec06:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_ideal.sh
+      config_path: configs/example/idealkmhv3.py
       benchmark_type: "spec06-1.0c"
-  
+
   perf_test_spec17:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_ideal.sh
+      config_path: configs/example/idealkmhv3.py
       benchmark_type: "spec17-1.0c" 
-  
-  # perf_test_spec06_vector:
-  #   uses: ./.github/workflows/gem5-perf-template.yml
-  #   with:
-  #     script_path: ../kmh_v3_ideal.sh
-  #     benchmark_type: "spec06-rvv-1.0c"
-  #     vector_type: "simple"
-  #     check_result: false
\ No newline at end of file
+
diff --git a/.github/workflows/gem5-ideal-btb-perf.yml b/.github/workflows/gem5-ideal-btb-perf.yml
index 473258daab..50e1a200f3 100644
--- a/.github/workflows/gem5-ideal-btb-perf.yml
+++ b/.github/workflows/gem5-ideal-btb-perf.yml
@@ -18,5 +18,5 @@ jobs:
   perf_test:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_ideal.sh
-      benchmark_type: "spec06-0.8c"
\ No newline at end of file
+      config_path: configs/example/idealkmhv3.py
+      benchmark_type: "spec06-0.8c"
diff --git a/.github/workflows/gem5-ideal-rvv-simple-perf.yml b/.github/workflows/gem5-ideal-rvv-simple-perf.yml
index 5243ef119f..4c1ff6a4a5 100644
--- a/.github/workflows/gem5-ideal-rvv-simple-perf.yml
+++ b/.github/workflows/gem5-ideal-rvv-simple-perf.yml
@@ -7,7 +7,7 @@ jobs:
   perf_test:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_ideal.sh
+      config_path: configs/example/idealkmhv3.py
       benchmark_type: "spec06int-rvv-0.8c"
       vector_type: "simple"
-      check_result: false # Warning: rvv test will not show the difftest failure
\ No newline at end of file
+      check_result: false # Warning: rvv test will not show the difftest failure
diff --git a/.github/workflows/gem5-perf-template.yml b/.github/workflows/gem5-perf-template.yml
index 938bc889c5..c64a82b050 100644
--- a/.github/workflows/gem5-perf-template.yml
+++ b/.github/workflows/gem5-perf-template.yml
@@ -3,9 +3,15 @@ name: gem5 Performance Test Template (Unified)
 on:
   workflow_call:
     inputs:
-      script_path:
+      config_path:
         required: true
         type: string
+        description: "gem5 config file path (relative to repo root), e.g. configs/example/idealkmhv3.py"
+      extra_args:
+        required: false
+        type: string
+        default: ""
+        description: "Extra arguments for gem5 (e.g., --disable-mgsc). Only works with .py config files."
       benchmark_type:
         required: true
         type: string
@@ -116,17 +122,32 @@ jobs:
 
       - name: XS-GEM5 - Run performance test
         # ${{ steps.config.outputs.comment }}
+        env:
+          GCBV_REF_SO: "/nfs/home/share/gem5_ci/ref/normal/riscv64-nemu-notama-tvalref-so"
+          GCB_RESTORER: ""
+          GEM5_HOME: ${{ github.workspace }}
+          GEM5_BUILD_TYPE: fast
         run: |
-          export GCBV_REF_SO="/nfs/home/share/gem5_ci/ref/normal/riscv64-nemu-notama-tvalref-so"
-          export GCB_RESTORER=""
-          export GEM5_HOME=$(pwd)
-          export GEM5_BUILD_TYPE=fast
           mkdir -p $GEM5_HOME/util/xs_scripts/test
           cd $GEM5_HOME/util/xs_scripts/test
-          bash ../parallel_sim.sh `realpath ${{ inputs.script_path }}` \
+
+          CONFIG_PATH="${{ inputs.config_path }}"
+          if [[ "$CONFIG_PATH" == /* ]]; then
+            echo "Error: config_path must be repo-root-relative, got absolute path: '$CONFIG_PATH'"
+            exit 1
+          fi
+          if [[ "$CONFIG_PATH" != *.py ]]; then
+            echo "Error: config_path must be a .py gem5 config file path, got: '$CONFIG_PATH'"
+            exit 1
+          fi
+
+          CONFIG_PATH="$GEM5_HOME/$CONFIG_PATH"
+
+          bash ../parallel_sim.sh "$(realpath "$CONFIG_PATH")" \
             ${{ steps.config.outputs.checkpoint_list }} \
             ${{ steps.config.outputs.checkpoint_root_node}} \
-            spec_all
+            spec_all \
+            "${{ inputs.extra_args }}"
       - name: Setup gem5_data_proc environment
         run: |
           # 使用本地数据处理仓库，避免GitHub网络问题
diff --git a/.github/workflows/gem5-perf.yml b/.github/workflows/gem5-perf.yml
index fae1512f46..0a0adf4b2a 100644
--- a/.github/workflows/gem5-perf.yml
+++ b/.github/workflows/gem5-perf.yml
@@ -15,5 +15,5 @@ jobs:
   perf_test:
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_6wide.sh
-      benchmark_type: "spec06-0.8c"
\ No newline at end of file
+      config_path: configs/example/kmhv2.py
+      benchmark_type: "spec06-0.8c"
diff --git a/.github/workflows/manual-perf.yml b/.github/workflows/manual-perf.yml
index b3dfb42def..9164a9b51e 100644
--- a/.github/workflows/manual-perf.yml
+++ b/.github/workflows/manual-perf.yml
@@ -41,27 +41,13 @@ jobs:
   setup:
     runs-on: ubuntu-latest
     outputs:
-      script_path: ${{ steps.resolve.outputs.script_path }}
+      config_path: ${{ steps.resolve.outputs.config_path }}
       pr_sha: ${{ steps.resolve.outputs.pr_sha }}
     steps:
       - name: Resolve parameters
         id: resolve
         run: |
-          case "${{ github.event.inputs.configuration }}" in
-            "kmhv2.py")
-              echo "script_path=../kmh_6wide.sh" >> $GITHUB_OUTPUT
-              ;;
-            "kmhv3.py")
-              echo "script_path=../kmh_v3_btb.sh" >> $GITHUB_OUTPUT
-              ;;
-            "idealkmhv3.py")
-              echo "script_path=../kmh_v3_ideal.sh" >> $GITHUB_OUTPUT
-              ;;
-            *)
-              echo "Error: unsupported configuration '${{ github.event.inputs.configuration }}'" >&2
-              exit 1
-              ;;
-          esac
+          echo "config_path=configs/example/${{ github.event.inputs.configuration }}" >> $GITHUB_OUTPUT
           
           if [ -n "${{ github.event.inputs.branch }}" ]; then
             echo "pr_sha=${{ github.event.inputs.branch }}" >> $GITHUB_OUTPUT
@@ -73,7 +59,7 @@ jobs:
     needs: setup
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ${{ needs.setup.outputs.script_path }}
+      config_path: ${{ needs.setup.outputs.config_path }}
       benchmark_type: ${{ github.event.inputs.benchmark_type }}
       vector_type: ${{ github.event.inputs.vector_type }}
       pr_sha: ${{ needs.setup.outputs.pr_sha }}
diff --git a/.github/workflows/on-demand-spec.yml b/.github/workflows/on-demand-spec.yml
index af2d0e9d30..75c0e2fffd 100644
--- a/.github/workflows/on-demand-spec.yml
+++ b/.github/workflows/on-demand-spec.yml
@@ -83,7 +83,7 @@ jobs:
     needs: trigger
     uses: ./.github/workflows/gem5-perf-template.yml
     with:
-      script_path: ../kmh_v3_ideal.sh
+      config_path: configs/example/idealkmhv3.py
       benchmark_type: ${{ needs.trigger.outputs.benchmark_type }}
       vector_type: ${{ needs.trigger.outputs.vector_type }}
       pr_sha: ${{ needs.trigger.outputs.pr_sha }}
diff --git a/util/xs_scripts/parallel_sim.sh b/util/xs_scripts/parallel_sim.sh
index 16ee1ad37f..f6166134aa 100644
--- a/util/xs_scripts/parallel_sim.sh
+++ b/util/xs_scripts/parallel_sim.sh
@@ -1,8 +1,28 @@
+#!/usr/bin/env bash
 # DO NOT track your local updates in this script!
 
 function print_help() {
     printf "Usage:
-    bash $0 arch_script.sh workload_list.lst checkpoint_top_dir task_tag\n"
+    bash $0 <config_file_or_script> workload_list.lst checkpoint_top_dir task_tag [extra_gem5_args]
+
+Arguments:
+    config_file_or_script:  Config file (*.py) or wrapper script (*.sh).
+                            If relative, it is resolved relative to the repo root (gem5_home).
+    workload_list.lst:      List of workloads to run
+    checkpoint_top_dir:     Root directory for checkpoints
+    task_tag:               Tag for this experiment
+    extra_gem5_args:        Optional extra arguments for gem5 (only for .py mode)
+
+Examples:
+    # Legacy mode (using .sh script)
+    bash $0 kmh_v3_btb.sh workload.lst /cpt/dir my_exp
+
+    # New mode (using .py config)
+    bash $0 configs/example/idealkmhv3.py workload.lst /cpt/dir my_exp
+
+    # New mode with extra args
+    bash $0 configs/example/idealkmhv3.py workload.lst /cpt/dir my_exp_nosc \"--disable-mgsc\"
+\n"
     exit 1
 }
 
@@ -13,7 +33,31 @@ fi
 
 set -x
 
-export arch_script=`realpath $1`
+script_dir=$(dirname -- "$( readlink -f -- "$0"; )")
+source "$script_dir/common.sh"
+
+# Detect if first parameter is a script (.sh) or config file (.py)
+first_param="$1"
+if [[ "$first_param" != /* ]] && [[ -f "$gem5_home/$first_param" ]]; then
+    first_param="$gem5_home/$first_param"
+fi
+export first_param=$(realpath "$first_param")
+
+if [[ "$first_param" == *.sh ]]; then
+    # Legacy mode: using wrapper script
+    export use_legacy_mode=true
+    export arch_script="$first_param"
+    echo "Legacy mode: using script $arch_script"
+else
+    # New mode: using config file directly
+    export use_legacy_mode=false
+    export config_file="$first_param"
+    export extra_gem5_args="${5:-}"  # Optional 5th parameter
+    echo "Config mode: using $config_file"
+    if [ -n "$extra_gem5_args" ]; then
+        echo "Extra gem5 args: $extra_gem5_args"
+    fi
+fi
 
 # Note 1: workload list contains the workload name, checkpoint path, and parameters, looks like:
 #       astar_biglakes_122060000000 astar_biglakes_122060000000_0.244818/0/ 0 0 20 20
@@ -70,9 +114,16 @@ function run() {
 
     touch running
 
-    script_dir=$(dirname -- "$( readlink -f -- "$0"; )")
-    bash $arch_script $1 # checkpoint
-    check $?
+    if [ "$use_legacy_mode" = true ]; then
+        # Legacy mode: call wrapper script
+        bash $arch_script $1 # checkpoint
+        check $?
+    else
+        # New mode: directly call gem5 with config file
+        # config_file is already an absolute path from realpath
+        $gem5 "$config_file" --generic-rv-cpt="$1" $extra_gem5_args
+        check $?
+    fi
 
     rm running
     touch completed