diff --git a/.github/workflows/linux-riscv64.yml b/.github/workflows/linux-riscv64.yml
index d7a47002945..2cf1cc9cfef 100644
--- a/.github/workflows/linux-riscv64.yml
+++ b/.github/workflows/linux-riscv64.yml
@@ -82,27 +82,17 @@ jobs:
         cd build
         TESTS_EXECUTABLE_LOADER=qemu-riscv64 TESTS_EXECUTABLE_LOADER_ARGUMENTS="-L;/usr/riscv64-linux-gnu" ctest --output-on-failure -j $(nproc)
 
-  c906:
+  xuantie:
+    name: xuantie-${{ matrix.cpu }}
     runs-on: [self-hosted, linux, ubuntu]
-    steps:
-    - uses: actions/checkout@v4
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { cpu: c906, QEMU_CPU: c906fdv, OPENMP: OFF, RVV: OFF, XTHEADVECTOR: ON,  ZFH: ON, ZVFH: OFF }
+          - { cpu: c910, QEMU_CPU: c910v,   OPENMP: ON,  RVV: OFF, XTHEADVECTOR: ON,  ZFH: ON, ZVFH: OFF }
+          - { cpu: c908, QEMU_CPU: c908v,   OPENMP: ON,  RVV: ON,  XTHEADVECTOR: OFF, ZFH: ON, ZVFH: ON  }
 
-    - name: configure
-      run: |
-        export RISCV_ROOT_PATH=/data/action/osd/Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V3.0.1
-        mkdir build && cd build
-        cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/c906-v301.toolchain.cmake -DCMAKE_BUILD_TYPE=release -DNCNN_OPENMP=OFF -DNCNN_THREADS=OFF -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=OFF -DNCNN_XTHEADVECTOR=ON -DNCNN_ZFH=ON -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON -DNCNN_BUILD_TESTS=ON ..
-    - name: build
-      run: cmake --build build -j 8
-
-    - name: test
-      run: |
-        export PATH=/data/action/osd/Xuantie-qemu-x86_64-Ubuntu-20.04-V5.0.4-B20241127-1130/bin:$PATH
-        cd build
-        TESTS_EXECUTABLE_LOADER=qemu-riscv64 TESTS_EXECUTABLE_LOADER_ARGUMENTS="-cpu;c906fdv" ctest --output-on-failure -j 8
-
-  c910:
-    runs-on: [self-hosted, linux, ubuntu]
     steps:
     - uses: actions/checkout@v4
 
@@ -110,7 +100,7 @@ jobs:
       run: |
         export RISCV_ROOT_PATH=/data/action/osd/Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V3.0.1
         mkdir build && cd build
-        cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/c910-v301.toolchain.cmake -DCMAKE_BUILD_TYPE=release -DNCNN_OPENMP=ON -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=OFF -DNCNN_XTHEADVECTOR=ON -DNCNN_ZFH=ON -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON -DNCNN_BUILD_TESTS=ON ..
+        cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/${{ matrix.cpu }}-v301.toolchain.cmake -DCMAKE_BUILD_TYPE=release -DNCNN_OPENMP=${{ matrix.OPENMP }} -DNCNN_THREADS=${{ matrix.OPENMP }} -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=${{ matrix.RVV }} -DNCNN_XTHEADVECTOR=${{ matrix.XTHEADVECTOR }} -DNCNN_ZFH=${{ matrix.ZFH }} -DNCNN_ZVFH=${{ matrix.ZVFH }} -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON -DNCNN_BUILD_TESTS=ON ..
     - name: build
       run: cmake --build build -j 8
 
@@ -118,7 +108,7 @@ jobs:
       run: |
         export PATH=/data/action/osd/Xuantie-qemu-x86_64-Ubuntu-20.04-V5.0.4-B20241127-1130/bin:$PATH
         cd build
-        TESTS_EXECUTABLE_LOADER=qemu-riscv64 TESTS_EXECUTABLE_LOADER_ARGUMENTS="-cpu;c910v" ctest --output-on-failure -j 8
+        TESTS_EXECUTABLE_LOADER=qemu-riscv64 TESTS_EXECUTABLE_LOADER_ARGUMENTS="-cpu;${{ matrix.QEMU_CPU }}" ctest --output-on-failure -j 8
 
   gcc-rvv:
     runs-on: [self-hosted, linux, ubuntu]
diff --git a/toolchains/c908-v301.toolchain.cmake b/toolchains/c908-v301.toolchain.cmake
new file mode 100644
index 00000000000..9e9b69eee67
--- /dev/null
+++ b/toolchains/c908-v301.toolchain.cmake
@@ -0,0 +1,40 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR riscv64)
+
+if(DEFINED ENV{RISCV_ROOT_PATH})
+    file(TO_CMAKE_PATH $ENV{RISCV_ROOT_PATH} RISCV_ROOT_PATH)
+else()
+    message(FATAL_ERROR "RISCV_ROOT_PATH env must be defined")
+endif()
+
+set(RISCV_ROOT_PATH ${RISCV_ROOT_PATH} CACHE STRING "root path to riscv toolchain")
+
+set(CMAKE_C_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-gcc")
+set(CMAKE_CXX_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-g++")
+
+set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
+
+set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
+
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
+
+set(CMAKE_C_FLAGS "-march=rv64gcv_zicbom_zicbop_zicboz_zihintpause_zfh_zvfh_zba_zbb_zbc_zbs_svinval_svnapot_svpbmt_xtheadc_xtheadvdot -mabi=lp64d -mtune=c908 -static")
+set(CMAKE_CXX_FLAGS "-march=rv64gcv_zicbom_zicbop_zicboz_zihintpause_zfh_zvfh_zba_zbb_zbc_zbs_svinval_svnapot_svpbmt_xtheadc_xtheadvdot -mabi=lp64d -mtune=c908 -static")
+
+# cache flags
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags")
+
+# export RISCV_ROOT_PATH=/home/nihui/osd/Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V3.0.1
+# cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/c908-v301.toolchain.cmake -DCMAKE_BUILD_TYPE=release -DNCNN_BUILD_TESTS=ON -DNCNN_OPENMP=ON -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=ON -DNCNN_XTHEADVECTOR=OFF -DNCNN_ZFH=ON -DNCNN_ZVFH=ON -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON ..