diff --git a/.github/problem-matchers/compiler-non-source.json b/.github/problem-matchers/compiler-non-source.json
new file mode 100644
index 000000000000..5a21a7dcbb59
--- /dev/null
+++ b/.github/problem-matchers/compiler-non-source.json
@@ -0,0 +1,17 @@
+{
+    "problemMatcher": [
+        {
+            "__comment_owner": "match compiler warning/error lines not from source",
+            "owner": "compiler-non-source",
+            "pattern": [
+                {
+                    "__comment_regexp1": "clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument]",
+                    "__comment_regexp2": "ld.lld: warning: lld uses blx instruction, no object with architecture supporting feature detected",
+                    "regexp": "^(?:[^:]+): (?:fatal\\s+)?(warning|error):\\s+(.*)$",
+                    "severity": 1,
+                    "message": 2
+                }
+            ]
+        }
+    ]
+}
diff --git a/.github/problem-matchers/compiler-source.json b/.github/problem-matchers/compiler-source.json
new file mode 100644
index 000000000000..e719f671e8dc
--- /dev/null
+++ b/.github/problem-matchers/compiler-source.json
@@ -0,0 +1,17 @@
+{
+    "problemMatcher": [
+        {
+            "owner": "gcc-problem-matcher",
+            "pattern": [
+                {
+                    "regexp": "^(?:/linux/)?(.*):(\\d+):(\\d+):\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "severity": 4,
+                    "message": 5
+                }
+            ]
+        }
+    ]
+}
diff --git a/.github/problem-matchers/sparse.json b/.github/problem-matchers/sparse.json
new file mode 100644
index 000000000000..83c626e5448e
--- /dev/null
+++ b/.github/problem-matchers/sparse.json
@@ -0,0 +1,17 @@
+{
+    "problemMatcher": [
+	{
+	    "owner": "powerpc-sparse",
+	    "pattern": [
+		{
+		    "regexp": "^\\+(?:/linux/)?(.*):(\\d+|XX):(\\d+|XX):\\s+(error|warning):\\s+(.*)$",
+		    "file": 1,
+		    "line": 2,
+		    "column": 3,
+		    "severity": 4,
+		    "message": 5
+		}
+	    ]
+	}
+    ]
+}
diff --git a/.github/workflows/powerpc-allconfig.yml b/.github/workflows/powerpc-allconfig.yml
new file mode 100644
index 000000000000..db9da607aad2
--- /dev/null
+++ b/.github/workflows/powerpc-allconfig.yml
@@ -0,0 +1,90 @@
+name: powerpc/allconfig
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to merge-test only
+    branches:
+    - 'merge-test'
+
+jobs:
+  kernel:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # ppc64le allmod and allyes
+          - subarch: ppc64le
+            defconfig: ppc64le_allmodconfig
+            image: fedora-38
+          - subarch: ppc64le
+            defconfig: allyesconfig
+            image: fedora-38
+            merge_config: /linux/arch/powerpc/configs/le.config
+          # ppc64 allmod and allyes
+          - subarch: ppc64
+            defconfig: allmodconfig
+            image: fedora-38
+          - subarch: ppc64
+            defconfig: allyesconfig
+            image: fedora-38
+          # ppc32 allmod
+          - subarch: ppc
+            defconfig: ppc32_allmodconfig
+            image: fedora-38
+          # ppc64 book3e allmod
+          - subarch: ppc64
+            defconfig: ppc64_book3e_allmodconfig
+            image: fedora-38
+
+    env:
+      ARCH: powerpc
+      TARGET: kernel
+      CCACHE: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+      DEFCONFIG: ${{ matrix.defconfig }}
+      MERGE_CONFIG: /linux/arch/powerpc/configs/disable-werror.config,${{ matrix.merge_config }}
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.defconfig }}-${{ matrix.image }}
+        path: |
+          ~/output/vmlinux
+          ~/output/.config
+          ~/output/System.map
+          ~/output/modules.tar.bz2
+          ~/output/arch/powerpc/boot/zImage
+          ~/output/arch/powerpc/boot/uImage
diff --git a/.github/workflows/powerpc-clang.yml b/.github/workflows/powerpc-clang.yml
new file mode 100644
index 000000000000..91466fa221c3
--- /dev/null
+++ b/.github/workflows/powerpc-clang.yml
@@ -0,0 +1,84 @@
+name: powerpc/clang
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to any branch
+    branches:
+    - '**'
+    # As long as one of these paths matches
+    paths:
+      - '!tools/**'		   	# ignore tools
+      - '!samples/**'		   	# ignore samples
+      - '!Documentation/**'		# ignore Documentation
+      - '!arch/**'			# ignore arch changes
+      - 'arch/powerpc/**'		# but not arch/powerpc
+      - 'arch/Kconfig'			# or common bits in arch
+      - '**'				# anything else triggers a build
+
+jobs:
+  kernel:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        defconfig: [ppc64, corenet64_smp, pmac32, ppc40x, mpc885_ads]
+        image: [fedora-38]
+        subarch: [ppc64]
+        include:
+          - subarch: ppc64le
+            defconfig: ppc64le
+            image: fedora-38
+
+    env:
+      CLANG: 1
+      LLVM_IAS: 0
+      ARCH: powerpc
+      TARGET: kernel
+      CCACHE: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+      DEFCONFIG: ${{ matrix.defconfig }}
+      MERGE_CONFIG: /linux/arch/powerpc/configs/disable-werror.config
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.defconfig }}-${{ matrix.image }}
+        path: |
+          ~/output/vmlinux
+          ~/output/.config
+          ~/output/System.map
+          ~/output/modules.tar.bz2
+          ~/output/arch/powerpc/boot/zImage
+          ~/output/arch/powerpc/boot/uImage
diff --git a/.github/workflows/powerpc-extrawarn.yml b/.github/workflows/powerpc-extrawarn.yml
new file mode 100644
index 000000000000..f412e194fc47
--- /dev/null
+++ b/.github/workflows/powerpc-extrawarn.yml
@@ -0,0 +1,71 @@
+name: powerpc/extrawarn
+
+# Controls when the action will run.
+on:
+  # Only when triggered manually via the github UI.
+  workflow_dispatch:
+
+jobs:
+  kernel:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        defconfig: [ppc64, corenet64_smp, pmac32, ppc40x, ppc44x, mpc885_ads, corenet32_smp]
+        image: [fedora-38, korg-5.5.0]
+        subarch: [ppc64]
+        include:
+          - subarch: ppc64le
+            defconfig: ppc64le
+            image: korg-5.5.0
+          - subarch: ppc64le
+            defconfig: ppc64le
+            image: fedora-38
+
+    env:
+      ARCH: powerpc
+      TARGET: kernel
+      CCACHE: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+      DEFCONFIG: ${{ matrix.defconfig }}
+      MERGE_CONFIG: /linux/arch/powerpc/configs/disable-werror.config
+      KBUILD_EXTRA_WARN: 1
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.defconfig }}-${{ matrix.image }}
+        path: |
+          ~/output/vmlinux
+          ~/output/.config
+          ~/output/System.map
+          ~/output/modules.tar.bz2
+          ~/output/arch/powerpc/boot/zImage
+          ~/output/arch/powerpc/boot/uImage
diff --git a/.github/workflows/powerpc-kernel+qemu.yml b/.github/workflows/powerpc-kernel+qemu.yml
new file mode 100644
index 000000000000..7b5c44e225c5
--- /dev/null
+++ b/.github/workflows/powerpc-kernel+qemu.yml
@@ -0,0 +1,219 @@
+name: powerpc/kernel+qemu
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to any branch
+    branches:
+    - '**'
+    # As long as one of these paths matches
+    paths:
+      - '!tools/**'		   	# ignore tools
+      - '!samples/**'		   	# ignore samples
+      - '!Documentation/**'		# ignore Documentation
+      - '!arch/**'			# ignore arch changes
+      - 'arch/powerpc/**'		# but not arch/powerpc
+      - 'arch/Kconfig'			# or common bits in arch
+      - '**'				# anything else triggers a build
+
+jobs:
+  kernel:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        defconfig: [ppc64_defconfig, ppc40x_defconfig, mpc885_ads_defconfig]
+        image: [fedora-38, korg-5.5.0]
+        include:
+          # ppc64le_guest_defconfig
+          - subarch: ppc64le
+            defconfig: ppc64le_guest_defconfig
+            image: fedora-38
+          - subarch: ppc64le
+            defconfig: ppc64le_guest_defconfig
+            image: korg-5.5.0
+
+          # ppc44x
+          - defconfig: ppc44x_defconfig
+            merge_config: /linux/arch/powerpc/configs/ppc44x-qemu.config
+            image: fedora-38
+          - defconfig: ppc44x_defconfig
+            merge_config: /linux/arch/powerpc/configs/ppc44x-qemu.config
+            image: korg-5.5.0
+
+          # corenet64_smp
+          - defconfig: corenet64_smp_defconfig
+            image: fedora-38
+          - defconfig: corenet64_smp_defconfig
+            image: korg-5.5.0
+
+          # g5
+          - defconfig: g5_defconfig
+            merge_config: /linux/arch/powerpc/configs/g5-qemu.config
+            image: fedora-38
+          - defconfig: g5_defconfig
+            merge_config: /linux/arch/powerpc/configs/g5-qemu.config
+            image: korg-5.5.0
+
+          # pmac32
+          - defconfig: pmac32_defconfig
+            merge_config: /linux/arch/powerpc/configs/pmac32-qemu.config
+            image: fedora-38
+          - defconfig: pmac32_defconfig
+            merge_config: /linux/arch/powerpc/configs/pmac32-qemu.config
+            image: korg-5.5.0
+
+          - defconfig: corenet32_smp_defconfig
+            image: fedora-38
+
+    env:
+      ARCH: powerpc
+      TARGET: kernel
+      CCACHE: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+      DEFCONFIG: ${{ matrix.defconfig }}
+      MERGE_CONFIG: ${{ matrix.merge_config }}
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.defconfig }}-${{ matrix.image }}
+        path: |
+          ~/output/vmlinux
+          ~/output/.config
+          ~/output/System.map
+          ~/output/modules.tar.bz2
+          ~/output/arch/powerpc/boot/zImage
+          ~/output/arch/powerpc/boot/uImage
+          ~/output/include/config/kernel.release
+
+  boot:
+    runs-on: ubuntu-latest
+    needs: kernel
+
+    strategy:
+      matrix:
+        include:
+          - defconfig: ppc64le_guest_defconfig
+            machine: pseries+p8+tcg
+            machine_2: pseries+p9+tcg
+            packages: qemu-system-ppc64
+            rootfs: ppc64le-rootfs.cpio.gz
+            old-image: korg-5.5.0
+            new-image: fedora-38
+
+          - defconfig: ppc64le_guest_defconfig
+            machine: powernv+p8+tcg
+            machine_2: powernv+p9+tcg
+            packages: qemu-system-ppc64
+            rootfs: ppc64le-rootfs.cpio.gz
+            old-image: korg-5.5.0
+            new-image: fedora-38
+
+          - defconfig: ppc44x_defconfig
+            machine: 44x
+            packages: qemu-system-ppc
+            rootfs: ppc-rootfs.cpio.gz
+            old-image: korg-5.5.0
+            new-image: fedora-38
+
+          - defconfig: corenet64_smp_defconfig
+            machine: ppc64e
+            machine_2: ppc64e+compat
+            packages: qemu-system-ppc64
+            rootfs: ppc64-novsx-rootfs.cpio.gz ppc-rootfs.cpio.gz
+            old-image: korg-5.5.0
+            new-image: fedora-38
+
+          - defconfig: g5_defconfig
+            machine: g5
+            packages: qemu-system-ppc64 openbios-ppc
+            rootfs: ppc64-rootfs.cpio.gz
+            old-image: korg-5.5.0
+            new-image: fedora-38
+
+          - defconfig: pmac32_defconfig
+            machine: mac99
+            packages: qemu-system-ppc openbios-ppc
+            rootfs: ppc-rootfs.cpio.gz
+            old-image: korg-5.5.0
+            new-image: fedora-38
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        repository: linuxppc/ci-scripts
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Download root disk
+      run: make -C root-disks ${{ matrix.rootfs }}
+
+    - name: Set root disk path
+      run: echo "ROOT_DISK_PATH=$PWD/root-disks" >> $GITHUB_ENV
+
+    - name: APT update
+      run: sudo apt update
+
+    - name: Install dependencies
+      run: sudo apt install -y ${{ matrix.packages }} python3-pexpect python3-termcolor python3-yaml
+
+    - uses: actions/download-artifact@v3
+      with:
+        name: ${{ matrix.defconfig }}-${{ matrix.new-image }}
+
+    - name: Disable network tests
+      run: echo "QEMU_NET_TESTS=0" >> $GITHUB_ENV
+
+    - name: Run qemu-${{ matrix.machine }} with ${{ matrix.new-image }} build kernel
+      run: ./scripts/boot/qemu-${{ matrix.machine }}
+
+    - name: Run qemu-${{ matrix.machine_2 }} with ${{ matrix.new-image }} build kernel
+      run: ./scripts/boot/qemu-${{ matrix.machine_2 }}
+      if: matrix.machine_2 != ''
+
+    - uses: actions/download-artifact@v3
+      with:
+        name: ${{ matrix.defconfig }}-${{ matrix.old-image }}
+
+    - name: Run qemu-${{ matrix.machine }} with ${{ matrix.old-image }} build kernel
+      run: ./scripts/boot/qemu-${{ matrix.machine }}
+
+    - name: Run qemu-${{ matrix.machine_2 }} with ${{ matrix.old-image }} build kernel
+      run: ./scripts/boot/qemu-${{ matrix.machine_2 }}
+      if: matrix.machine_2 != ''
diff --git a/.github/workflows/powerpc-perf.yml b/.github/workflows/powerpc-perf.yml
new file mode 100644
index 000000000000..e25f6270f5ed
--- /dev/null
+++ b/.github/workflows/powerpc-perf.yml
@@ -0,0 +1,71 @@
+name: powerpc/perf
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to any branch
+    branches:
+    - '**'
+    # As long as one of these paths matches
+    paths:
+      # Only build if perf or other pieces it uses have been modified
+      - 'tools/perf/**'
+      - 'tools/arch/**'
+      - 'tools/build/**'
+      - 'tools/include/**'
+      - 'tools/lib/**'
+      - 'tools/scripts/**'
+      # Change to workflow triggers a build
+      - '.github/workflows/powerpc-perf.yml'
+
+jobs:
+  perf:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        image: [ubuntu-22.04, ubuntu-20.04, ubuntu-18.04]
+        subarch: [ppc64, ppc64le]
+
+    env:
+      ARCH: powerpc
+      TARGET: perf
+      CCACHE: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.subarch }}-${{ matrix.image }}
+        path: |
+          ~/output
diff --git a/.github/workflows/powerpc-ppctests.yml b/.github/workflows/powerpc-ppctests.yml
new file mode 100644
index 000000000000..9caa8fdddfc2
--- /dev/null
+++ b/.github/workflows/powerpc-ppctests.yml
@@ -0,0 +1,69 @@
+name: powerpc/ppctests
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to any branch
+    branches:
+    - '**'
+    # As long as one of these paths matches
+    paths:
+      # Generic selftests changes might affect us so match all of selftests
+      - 'tools/testing/selftests/**'
+      # Some files in arch are symlinked by selftests
+      - 'arch/powerpc/**'
+      # Change to workflow triggers a build
+      - '.github/workflows/powerpc-ppctests.yml'
+
+jobs:
+  ppctests:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        image: [ubuntu-22.04, ubuntu-20.04, ubuntu-18.04, ubuntu-16.04]
+        subarch: [ppc64, ppc64le]
+
+    env:
+      ARCH: powerpc
+      TARGET: ppctests
+      CCACHE: 1
+      INSTALL: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.subarch }}-${{ matrix.image }}
+        path: |
+          ~/output/install
diff --git a/.github/workflows/powerpc-selftests.yml b/.github/workflows/powerpc-selftests.yml
new file mode 100644
index 000000000000..64c1b4e7b7cf
--- /dev/null
+++ b/.github/workflows/powerpc-selftests.yml
@@ -0,0 +1,69 @@
+name: powerpc/selftests
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to any branch
+    branches:
+    - '**'
+    # As long as one of these paths matches
+    paths:
+      # Generic selftests changes might affect us so match all of selftests
+      - 'tools/testing/selftests/**'
+      # Some files in arch are symlinked by selftests
+      - 'arch/powerpc/**'
+      # Change to workflow triggers a build
+      - '.github/workflows/powerpc-selftests.yml'
+
+jobs:
+  selftests:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        image: [ubuntu-22.04, ubuntu-20.04, ubuntu-18.04, ubuntu-16.04]
+        subarch: [ppc64, ppc64le]
+
+    env:
+      ARCH: powerpc
+      TARGET: selftests
+      CCACHE: 1
+      INSTALL: 1
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Register problem matchers
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.subarch }}-${{ matrix.image }}
+        path: |
+          ~/output/install
diff --git a/.github/workflows/powerpc-sparse.yml b/.github/workflows/powerpc-sparse.yml
new file mode 100644
index 000000000000..8b858b517cb1
--- /dev/null
+++ b/.github/workflows/powerpc-sparse.yml
@@ -0,0 +1,103 @@
+name: powerpc/sparse
+
+# Controls when the action will run.
+on:
+  # This allows the build to be triggered manually via the github UI.
+  workflow_dispatch:
+
+  push:
+    # This triggers the build on a push to any branch named ci/powerpc/<something>
+    branches:
+    - '**'
+    # As long as one of these paths matches
+    paths:
+      - '!tools/**'		   	# ignore tools
+      - '!samples/**'		   	# ignore samples
+      - '!Documentation/**'		# ignore Documentation
+      - '!arch/**'			# ignore arch changes
+      - 'arch/powerpc/**'		# but not arch/powerpc
+      - 'arch/Kconfig'			# or common bits in arch
+      - '**'				# anything else triggers a build
+
+jobs:
+  sparse:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        defconfig: [ppc64, pmac32, mpc885_ads_defconfig]
+        image: [fedora-38]
+        subarch: [ppc64]
+        include:
+          - subarch: ppc64le
+            defconfig: ppc64le
+            image: fedora-38
+
+    env:
+      ARCH: powerpc
+      TARGET: kernel
+      CCACHE: 1
+      SPARSE: 2
+      SUBARCH: ${{ matrix.subarch }}
+      IMAGE: ${{ matrix.image }}
+      DEFCONFIG: ${{ matrix.defconfig }}
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    # NB this is before the build on merge, so all errors are detected
+    # On other branches we ignore these and only report sparse diff results below
+    - name: Register problem matchers
+      if: github.ref_name == 'merge'
+      run: |
+        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
+        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"
+
+    - name: Load ccache
+      uses: actions/cache@v3
+      with:
+        path: ~/.ccache
+        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |
+        mkdir -p ~/.ccache
+        ./arch/powerpc/tools/ci-build.sh
+
+    - name: Get sparse results from base tree
+      if: github.ref_name != 'merge'
+      continue-on-error: true
+      uses: dawidd6/action-download-artifact@v2
+      with:
+        workflow: powerpc-sparse.yml
+        workflow_conclusion: success
+        branch: merge # Requires the merge branch to be built once before this will work
+        name: sparse-${{ matrix.defconfig }}-${{ matrix.image }}.log
+
+    # NB this is after the build on non-merge, so only errors from the sparse diff are detected
+    - name: Register problem matcher
+      if: github.ref_name != 'merge'
+      run: |
+        echo "::add-matcher::.github/problem-matchers/sparse.json"
+
+    - name: Compare sparse results with base
+      if: github.ref_name != 'merge'
+      run: |
+        bash -c 'if [ ! -f sparse.log ]; then cp ~/output/sparse.log .; fi'
+        ./arch/powerpc/tools/smart-sparse-diff.py sparse.log ~/output/sparse.log | tee -a ~/output/sparse-diff.log
+
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: sparse-${{ matrix.defconfig }}-${{ matrix.image }}.log
+        path: |
+          ~/output/sparse.log
+          ~/output/sparse-diff.log
diff --git a/arch/powerpc/configs/disable-werror.config b/arch/powerpc/configs/disable-werror.config
index 6ea12a12432c..668b2a57f6e5 100644
--- a/arch/powerpc/configs/disable-werror.config
+++ b/arch/powerpc/configs/disable-werror.config
@@ -1 +1,2 @@
 CONFIG_PPC_DISABLE_WERROR=y
+CONFIG_WERROR=n
diff --git a/arch/powerpc/configs/g5-qemu.config b/arch/powerpc/configs/g5-qemu.config
new file mode 100644
index 000000000000..3ae1c8a8bc61
--- /dev/null
+++ b/arch/powerpc/configs/g5-qemu.config
@@ -0,0 +1,2 @@
+CONFIG_SERIAL_PMACZILOG=y
+CONFIG_SERIAL_PMACZILOG_CONSOLE=y
diff --git a/arch/powerpc/configs/pmac32-qemu.config b/arch/powerpc/configs/pmac32-qemu.config
new file mode 100644
index 000000000000..81d3a24b2169
--- /dev/null
+++ b/arch/powerpc/configs/pmac32-qemu.config
@@ -0,0 +1,5 @@
+CONFIG_SERIAL_PMACZILOG=y
+CONFIG_SERIAL_PMACZILOG_CONSOLE=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
diff --git a/arch/powerpc/configs/ppc44x-qemu.config b/arch/powerpc/configs/ppc44x-qemu.config
new file mode 100644
index 000000000000..5e9cf983acc7
--- /dev/null
+++ b/arch/powerpc/configs/ppc44x-qemu.config
@@ -0,0 +1,2 @@
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
diff --git a/arch/powerpc/tools/ci-build.sh b/arch/powerpc/tools/ci-build.sh
new file mode 100755
index 000000000000..1b3f6a391b4f
--- /dev/null
+++ b/arch/powerpc/tools/ci-build.sh
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+if [[ -z "$TARGET" || -z "$IMAGE" ]]; then
+    echo "Error: required environment variables not set!"
+    exit 1
+fi
+
+cmd="docker run --rm "
+cmd+="--network none "
+cmd+="-w /linux "
+
+linux_dir=$(realpath $(dirname $0))/../../../
+cmd+="-v $linux_dir:/linux:ro "
+
+cmd+="-e ARCH "
+cmd+="-e JFACTOR=$(nproc) "
+cmd+="-e KBUILD_BUILD_TIMESTAMP=$(date +%Y-%m-%d) "
+cmd+="-e CLANG "
+cmd+="-e LLVM_IAS "
+cmd+="-e SPARSE "
+
+if [[ -n "$MODULES" ]]; then
+    cmd+="-e MODULES=$MODULES "
+fi
+
+if [[ -n "$DEFCONFIG" ]]; then
+    if [[ $DEFCONFIG != *config ]]; then
+	DEFCONFIG=${DEFCONFIG}_defconfig
+    fi
+
+    cmd+="-e DEFCONFIG=${DEFCONFIG} "
+fi
+
+if [[ -n "$MERGE_CONFIG" ]]; then
+    cmd+="-e MERGE_CONFIG=$MERGE_CONFIG "
+fi
+
+if [[ "$SUBARCH" == "ppc64le" ]]; then
+    cross="powerpc64le-linux-gnu-"
+else
+    cross="powerpc-linux-gnu-"
+fi
+cmd+="-e CROSS_COMPILE=$cross "
+
+mkdir -p $HOME/output
+cmd+="-v $HOME/output:/output:rw "
+
+user=$(stat -c "%u:%g" $HOME/output)
+cmd+="-u $user "
+
+if [[ -n "$CCACHE" ]]; then
+    cmd+="-v $HOME/.ccache:/ccache:rw "
+    cmd+="-e CCACHE_DIR=/ccache "
+    cmd+="-e CCACHE=1 "
+fi
+
+if [[ -n "$TARGETS" ]]; then
+    cmd+="-e TARGETS=$TARGETS "
+fi
+
+if [[ -n "$INSTALL" ]]; then
+    cmd+="-e INSTALL=$INSTALL "
+fi
+
+if [[ "$TARGET" == "kernel" ]]; then
+    cmd+="-e QUIET=1 "
+fi
+
+if [[ -n $KBUILD_EXTRA_WARN ]]; then
+    cmd+="-e KBUILD_EXTRA_WARN=$KBUILD_EXTRA_WARN "
+fi
+
+cmd+="ghcr.io/linuxppc/build:$IMAGE-$(uname -m) "
+cmd+="/bin/container-build.sh $TARGET"
+
+(set -x; $cmd)
+
+rc=$?
+
+if [[ -n "$SPARSE" ]]; then
+    cat $HOME/output/sparse.log
+fi
+
+exit $rc