diff --git a/.buildkite/scripts/hardware_ci/run-cpu-test-s390x.sh b/.buildkite/scripts/hardware_ci/run-cpu-test-s390x.sh
new file mode 100755
index 000000000000..a97fa502e6cf
--- /dev/null
+++ b/.buildkite/scripts/hardware_ci/run-cpu-test-s390x.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# This script build the CPU docker image and run the offline inference inside the container.
+# It serves a sanity check for compilation and basic model usage.
+set -ex
+
+# Setup cleanup
+remove_docker_container() { docker rm -f cpu-test || true; docker system prune -f; }
+trap remove_docker_container EXIT
+remove_docker_container
+
+# Try building the docker image
+docker build -t cpu-test -f docker/Dockerfile.s390x .
diff --git a/docker/Dockerfile.ppc64le b/docker/Dockerfile.ppc64le
index 4540af4e8cdc..ec979227871c 100644
--- a/docker/Dockerfile.ppc64le
+++ b/docker/Dockerfile.ppc64le
@@ -126,13 +126,16 @@ RUN --mount=type=cache,target=/root/.cache/uv \
 FROM base-builder AS cv-builder
 
 ARG MAX_JOBS
-ARG OPENCV_VERSION=84
+ARG OPENCV_VERSION=86
+# patch for version 4.11.0.86
+ARG OPENCV_PATCH=97f3f39
 ARG ENABLE_HEADLESS=1
 RUN --mount=type=cache,target=/root/.cache/uv \
     source /opt/rh/gcc-toolset-13/enable && \
     git clone --recursive https://github.com/opencv/opencv-python.git -b ${OPENCV_VERSION} && \
     cd opencv-python && \
-    sed -i 's/"setuptools==59.2.0",/"setuptools<70.0",/g' pyproject.toml && \
+    sed -i -E -e 's/"setuptools.+",/"setuptools",/g' pyproject.toml && \
+    cd opencv && git cherry-pick --no-commit $OPENCV_PATCH && cd .. && \
     python -m build --wheel --installer=uv --outdir /opencvwheels/
 
 ###############################################################
@@ -148,9 +151,15 @@ COPY --from=arrow-builder /tmp/control /dev/null
 COPY --from=cv-builder /tmp/control /dev/null
 
 ARG VLLM_TARGET_DEVICE=cpu
+ARG GRPC_PYTHON_BUILD_SYSTEM_OPENSSL=1
 
 # this step installs vllm and populates uv cache
 # with all the transitive dependencies
+RUN --mount=type=cache,target=/root/.cache/uv \
+    source /opt/rh/gcc-toolset-13/enable && \
+    git clone https://github.com/huggingface/xet-core.git && cd xet-core/hf_xet/ && \
+    uv pip install maturin && \
+    uv build --wheel --out-dir /hf_wheels/
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,from=torch-builder,source=/torchwheels/,target=/torchwheels/,ro \
     --mount=type=bind,from=arrow-builder,source=/arrowwheels/,target=/arrowwheels/,ro \
@@ -159,7 +168,7 @@ RUN --mount=type=cache,target=/root/.cache/uv \
     source /opt/rh/gcc-toolset-13/enable && \
     uv pip install /opencvwheels/*.whl /arrowwheels/*.whl /torchwheels/*.whl && \
     sed -i -e 's/.*torch.*//g' /src/pyproject.toml /src/requirements/*.txt && \
-    uv pip install pandas pythran pybind11 && \
+    uv pip install pandas pythran pybind11 /hf_wheels/*.whl && \
     # sentencepiece.pc is in some pkgconfig inside uv cache
     export PKG_CONFIG_PATH=$(find / -type d -name "pkgconfig" 2>/dev/null | tr '\n' ':') && \
     uv pip install -r /src/requirements/common.txt -r /src/requirements/cpu.txt -r /src/requirements/build.txt --no-build-isolation && \
@@ -247,8 +256,9 @@ RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,from=torch-builder,source=/torchwheels/,target=/torchwheels/,ro \
     --mount=type=bind,from=arrow-builder,source=/arrowwheels/,target=/arrowwheels/,ro \
     --mount=type=bind,from=cv-builder,source=/opencvwheels/,target=/opencvwheels/,ro \
+    --mount=type=bind,from=vllmcache-builder,source=/hf_wheels/,target=/hf_wheels/,ro \
     --mount=type=bind,from=vllmcache-builder,source=/vllmwheel/,target=/vllmwheel/,ro \
-    HOME=/root uv pip install /opencvwheels/*.whl /arrowwheels/*.whl /torchwheels/*.whl /vllmwheel/*.whl
+    HOME=/root uv pip install /opencvwheels/*.whl /arrowwheels/*.whl /torchwheels/*.whl /hf_wheels/*.whl /vllmwheel/*.whl
 
 COPY ./ /workspace/vllm
 WORKDIR /workspace/vllm
diff --git a/docker/Dockerfile.s390x b/docker/Dockerfile.s390x
index 5a84dc12d8f7..128929ac3331 100644
--- a/docker/Dockerfile.s390x
+++ b/docker/Dockerfile.s390x
@@ -58,7 +58,7 @@ RUN --mount=type=cache,target=/root/.cache/uv \
     cd ../../python && \
     export PYARROW_PARALLEL=4 && \
     export ARROW_BUILD_TYPE=release && \
-    uv pip install -r requirements/build.txt && \
+    uv pip install -r requirements-build.txt && \
     python setup.py build_ext --build-type=$ARROW_BUILD_TYPE --bundle-arrow-cpp bdist_wheel
 
 FROM python-install AS numa-build
@@ -96,6 +96,22 @@ RUN --mount=type=cache,target=/root/.cache/uv \
     uv pip install -v torch==${TORCH_VERSION} --extra-index-url https://download.pytorch.org/whl/nightly/cpu && \
     python setup.py bdist_wheel
 
+FROM python-install AS hf-xet-builder
+# Install hf-xet
+WORKDIR /tmp
+ENV CARGO_HOME=/root/.cargo
+ENV RUSTUP_HOME=/root/.rustup
+ENV PATH="$CARGO_HOME/bin:$RUSTUP_HOME/bin:$PATH"
+RUN --mount=type=cache,target=/root/.cache/uv \
+    --mount=type=bind,from=rust,source=/root/.cargo,target=/root/.cargo,rw \
+    --mount=type=bind,from=rust,source=/root/.rustup,target=/root/.rustup,rw \
+    git clone https://github.com/huggingface/xet-core.git && \
+    cd xet-core/hf_xet/ && \
+    uv pip install maturin patchelf && \
+    python -m maturin build --release --out dist && \
+    mkdir -p /tmp/hf-xet/dist && \
+    cp dist/*.whl /tmp/hf-xet/dist/
+
 # Final build stage
 FROM python-install AS vllm-cpu
 ARG PYTHON_VERSION
@@ -120,12 +136,15 @@ RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,from=rust,source=/root/.rustup,target=/root/.rustup,rw \
     --mount=type=bind,from=pyarrow,source=/tmp/arrow/python/dist,target=/tmp/arrow-wheels \
     --mount=type=bind,from=torch-vision,source=/tmp/vision/dist,target=/tmp/vision-wheels/ \
+    --mount=type=bind,from=hf-xet-builder,source=/tmp/hf-xet/dist,target=/tmp/hf-xet-wheels/ \
      sed -i '/^torch/d' requirements/build.txt && \
      ARROW_WHL_FILE=$(ls /tmp/arrow-wheels/pyarrow-*.whl | head -n 1) && \
      VISION_WHL_FILE=$(ls /tmp/vision-wheels/*.whl | head -n 1) && \
+     HF_XET_WHL_FILE=$(ls /tmp/hf-xet-wheels/*.whl | head -n 1) && \
     uv pip install -v \    
         $ARROW_WHL_FILE  \
         $VISION_WHL_FILE \
+        $HF_XET_WHL_FILE \
         --extra-index-url https://download.pytorch.org/whl/nightly/cpu \
         --index-strategy unsafe-best-match \
         -r requirements/build.txt \
@@ -149,4 +168,5 @@ USER 2000
 WORKDIR /home/vllm
 
 # Set the default entrypoint
-ENTRYPOINT ["python", "-m", "vllm.entrypoints.openai.api_server"]
\ No newline at end of file
+ENTRYPOINT ["python", "-m", "vllm.entrypoints.openai.api_server"]
+