Enable native AArch64 Ubuntu CI jobs for the JIT

.github/workflows/build.yml

@@ -249,7 +249,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-24.04]
+        os:
+        - ubuntu-24.04
+        - ubuntu-24.04-aarch64
+        is-fork:  # only used for the exclusion trick
+        - ${{ github.repository_owner != 'python' }}
+        exclude:
+        - os: ubuntu-24.04-aarch64
+          is-fork: true
         openssl_ver: [3.0.15, 3.1.7, 3.2.3, 3.3.2]
     env:
       OPENSSL_VER: ${{ matrix.openssl_ver }}
@@ -429,7 +436,14 @@ jobs:
     if: needs.check_source.outputs.run_tests == 'true'
     strategy:
       matrix:
-        os: [ubuntu-24.04]
+        os:
+        - ubuntu-24.04
+        - ubuntu-24.04-aarch64
+        is-fork:  # only used for the exclusion trick
+        - ${{ github.repository_owner != 'python' }}
+        exclude:
+        - os: ubuntu-24.04-aarch64
+          is-fork: true
     env:
       OPENSSL_VER: 3.0.15
       PYTHONSTRICTEXTENSIONBUILD: 1

.github/workflows/jit.yml

@@ -93,12 +93,14 @@ jobs:
             compiler: clang
           - target: aarch64-unknown-linux-gnu/gcc
             architecture: aarch64
-            runner: ubuntu-22.04
+            runner: ubuntu-24.04-aarch64
             compiler: gcc
+            if: ${{ github.repository_owner != 'python' }}
           - target: aarch64-unknown-linux-gnu/clang
             architecture: aarch64
-            runner: ubuntu-22.04
+            runner: ubuntu-24.04-aarch64
             compiler: clang
+            if: ${{ github.repository_owner != 'python' }}
     env:
       CC: ${{ matrix.compiler }}
     steps:
@@ -123,7 +125,7 @@ jobs:
 
         # The `find` line is required as a result of https://github.com/actions/runner-images/issues/9966.
         # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
-        # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes 
+        # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes
         # the symlink to the pre-installed Python so that the Homebrew Python is used instead.
       - name: Native macOS
         if: runner.os == 'macOS'
@@ -137,35 +139,14 @@ jobs:
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
       - name: Native Linux
-        if: runner.os == 'Linux' && matrix.architecture == 'x86_64'
+        if: runner.os == 'Linux'
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
           ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }}
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-      - name: Emulated Linux
-        if: runner.os == 'Linux' && matrix.architecture != 'x86_64'
-        # The --ignorefile on ./python -m test is used to exclude tests known to fail when running on an emulated Linux.
-        run: |
-          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
-          export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          ./configure --prefix="$(pwd)/../build"
-          make install --jobs 4
-          make clean --jobs 4
-          export HOST=${{ matrix.architecture }}-linux-gnu
-          sudo apt install --yes "gcc-$HOST" qemu-user
-          ${{ !matrix.debug && matrix.compiler == 'clang' && './configure --enable-optimizations' || '' }}
-          ${{ !matrix.debug && matrix.compiler == 'clang' && 'make profile-run-stamp --jobs 4' || '' }}
-          export QEMU_LD_PREFIX="/usr/$HOST"
-          CC="${{ matrix.compiler == 'clang' && 'clang --target=$HOST' || '$HOST-gcc' }}" \
-            CPP="$CC --preprocess" \
-            HOSTRUNNER=qemu-${{ matrix.architecture }} \
-            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--with-lto' }} --build=x86_64-linux-gnu --host="$HOST" --with-build-python=../build/bin/python3 --with-pkg-config=no ac_cv_buggy_getaddrinfo=no ac_cv_file__dev_ptc=no ac_cv_file__dev_ptmx=yes
-          make all --jobs 4
-          ./python -m test --ignorefile=Tools/jit/ignore-tests-emulated-linux.txt --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-
   jit-with-disabled-gil:
     name: Free-Threaded (Debug)
     needs: interpreter