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[PATCH v3 0/2] target/riscv: throw debug exception before page fault
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https://lore.kernel.org/qemu-devel/20250121170626.1992570-1-dbarboza@ventanamicro.com

---

From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
To: qemu-devel@nongnu.org
Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org,
 liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com,
 richard.henderson@linaro.org,
 Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Subject: [PATCH v3 0/2] target/riscv: throw debug exception before page fault
Date: Tue, 21 Jan 2025 14:06:24 -0300
Message-ID: <20250121170626.1992570-1-dbarboza@ventanamicro.com>
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Hi,

In this new version, in patch 2,  we're using the address 'size' val from
riscv_cpu_tlb_fill() instead of infering it from the CPU XLEN.

No other changes made. Patches based on master.

Changes from v2:
- patch 2:
  - use 'size' instead of infering wp_len using the CPU XLEN
- v2 link: https://lore.kernel.org/qemu-riscv/20250120204910.1317013-1-dbarboza@ventanamicro.com/

Daniel Henrique Barboza (2):
  target/riscv/debug.c: use wp size = 4 for 32-bit CPUs
  target/riscv: throw debug exception before page fault

 target/riscv/cpu_helper.c | 18 ++++++++++++++++++
 target/riscv/debug.c      |  6 ++++--
 2 files changed, 22 insertions(+), 2 deletions(-)

--
2.47.1

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345 changes: 345 additions & 0 deletions .github/workflows/build.yml
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on: push

concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true

jobs:
checkapply:
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
# to debug container live from GitHub
# - uses: mxschmitt/action-tmate@v3
- run: bash -c '[ ! -f shazam.log ] || { cat shazam.log; exit 1; }'

checkpatch-ignore-signoff:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: git fetch -a origin --unshallow || true
- run: git remote add upstream -f https://gitlab.com/qemu-project/qemu
- run: ./scripts/checkpatch.pl --no-signoff $(git merge-base upstream/master HEAD)..HEAD

checkpatch-with-signoff:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: git fetch -a origin --unshallow || true
- run: git remote add upstream -f https://gitlab.com/qemu-project/qemu
- run: ./scripts/checkpatch.pl $(git merge-base upstream/master HEAD)..HEAD

# use docker-run to not rebuild images
# images are built daily and pushed on pbolinaro/qemu-ci:*
build-cross:
needs: checkapply
runs-on: ubuntu-24.04
strategy:
fail-fast: false
matrix:
container: [alpine,centos9,debian,debian-all-test-cross,debian-amd64-cross,debian-arm64-cross,debian-armhf-cross,debian-hexagon-cross,debian-i686-cross,debian-legacy-test-cross,debian-loongarch-cross,debian-mips64el-cross,debian-mipsel-cross,debian-ppc64el-cross,debian-riscv64-cross,debian-s390x-cross,debian-tricore-cross,fedora,fedora-rust-nightly,opensuse-leap,ubuntu2204]
steps:
- uses: actions/checkout@v4
- run: pip install meson
- run: make docker-run J=$(nproc) RUNC=podman TEST=test-build IMAGE=docker.io/pbolinaro/qemu-ci:${{matrix.container}}

build:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure && ninja -C build install'
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
./build/qemu-system-x86_64 -nographic -plugin ./build/contrib/plugins/libstoptrigger,icount=1000000 -plugin ./build/tests/tcg/plugins/libinsn -d plugin
build-cross-mingw64:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:fedora-win64-cross
bash -cx './configure $QEMU_CONFIGURE_OPTS && ninja -C build install'
build-windows:
needs: checkapply
runs-on: windows-2025
strategy:
fail-fast: false
matrix:
sys: [UCRT64, CLANG64, MINGW64]
defaults:
run:
shell: msys2 {0}
steps:
- uses: msys2/setup-msys2@v2
with:
update: true
msystem: ${{matrix.sys}}
- run: pacman -S --noconfirm curl git
- uses: actions/checkout@v4
- run: >
pacman -S --noconfirm
base-devel binutils bison diffutils flex git grep make sed
${MINGW_PACKAGE_PREFIX}-toolchain
${MINGW_PACKAGE_PREFIX}-glib2
${MINGW_PACKAGE_PREFIX}-gtk3
${MINGW_PACKAGE_PREFIX}-libnfs
${MINGW_PACKAGE_PREFIX}-libssh
${MINGW_PACKAGE_PREFIX}-ninja
${MINGW_PACKAGE_PREFIX}-pixman
${MINGW_PACKAGE_PREFIX}-pkgconf
${MINGW_PACKAGE_PREFIX}-python
${MINGW_PACKAGE_PREFIX}-SDL2
${MINGW_PACKAGE_PREFIX}-zstd
- run: ./configure && ninja -C build
- run: ./build/qemu-system-x86_64 -nographic -plugin ./build/contrib/plugins/libstoptrigger,icount=1000000 -plugin ./build/tests/tcg/plugins/libinsn -d plugin

build-macos-x86_64:
needs: checkapply
runs-on: macos-13
steps:
- uses: actions/checkout@v4
- run: brew install --quiet $(brew deps --include-build qemu) || true
# on macos, werror is not on by default
- run: ./configure --enable-werror && ninja -C build
- run: ./build/qemu-system-x86_64 -nographic -plugin ./build/contrib/plugins/libstoptrigger,icount=1000000 -plugin ./build/tests/tcg/plugins/libinsn -d plugin

build-macos-aarch64:
needs: checkapply
runs-on: macos-14
steps:
- uses: actions/checkout@v4
- run: brew install --quiet $(brew deps --include-build qemu) || true
# on macos, werror is not on by default
- run: ./configure --enable-werror && ninja -C build
- run: ./build/qemu-system-x86_64 -nographic -plugin ./build/contrib/plugins/libstoptrigger,icount=1000000 -plugin ./build/tests/tcg/plugins/libinsn -d plugin

build-misc:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --disable-user --disable-system --enable-docs --enable-tools && ninja -C build install'
build-32bits:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-i686-cross
bash -cx './configure $QEMU_CONFIGURE_OPTS && ninja -C build install'
build-big-endian:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-s390x-cross
bash -cx './configure $QEMU_CONFIGURE_OPTS && ninja -C build install'
build-debug:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --enable-debug --enable-asan --enable-ubsan && ninja -C build install'
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
./build/qemu-system-x86_64 -nographic -plugin ./build/contrib/plugins/libstoptrigger,icount=1000000 -plugin ./build/tests/tcg/plugins/libinsn -d plugin
build-static:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --disable-system --disable-tools --disable-guest-agent --disable-docs --static && ninja -C build install'
build-tsan:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --enable-tsan && ninja -C build install'
build-clang:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --cxx=clang++ --cc=clang --host-cc=clang && ninja -C build install'
build-clang-latest:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx 'LLVM_VERSION=19 && apt update && apt install -y lsb-release wget software-properties-common gnupg && wget https://apt.llvm.org/llvm.sh && bash llvm.sh ${LLVM_VERSION} && ./configure --cxx=clang++-${LLVM_VERSION} --cc=clang-${LLVM_VERSION} --host-cc=clang-${LLVM_VERSION} && ninja -C build install'
build-rust:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --enable-rust && ninja -C build install'
build-disable-tcg:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --disable-tcg && ninja -C build install'
build-disable-kvm:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --disable-kvm && ninja -C build install'
build-disable-tcg-kvm-for-xen:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --disable-tcg --disable-kvm && ninja -C build install'
build-minimal:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian
bash -cx './configure --without-default-features --without-default-devices --disable-kvm --disable-tcg && ninja -C build install'
check-tcg:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-all-test-cross
bash -cx './configure --disable-docs --enable-debug-tcg --enable-debug-graph-lock --enable-debug-mutex --enable-asan --enable-ubsan && ninja -C build'
- run: >
podman run --init --privileged --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-all-test-cross
bash -cx "env ASAN_OPTIONS=detect_leaks=0 make -k -j $(nproc) check-tcg"
# run all meson tests, except functional.
# block tests are not ran because they don't support sanitizers:
# https://gitlab.com/qemu-project/qemu/-/blob/master/tests/qemu-iotests/meson.build
check:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
# we use image with download cache filled. Solves servers flakiness.
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx './configure --disable-docs --enable-debug-tcg --enable-debug-graph-lock --enable-debug-mutex --enable-asan --enable-ubsan && ninja -C build'
- run: sudo chown $USER:$USER /dev/kvm
- run: >
podman run --init --privileged --rm -i -v /dev/kvm:/dev/kvm -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx "env ASAN_OPTIONS=detect_leaks=0 ./build/pyvenv/bin/meson test -C build --setup thorough --no-suite func-quick --no-suite func-thorough -t 5 --print-errorlogs"
check-functional:
needs: checkapply
runs-on: ubuntu-24.04
steps:
# we clean up runner first, to get more disk space
- run: docker system prune -af && sudo rm -rf /opt/*
- uses: actions/checkout@v4
# we use image with download cache filled. Solves servers flakiness.
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx './configure --disable-docs --enable-debug-tcg --enable-debug-graph-lock --enable-debug-mutex --enable-asan --enable-ubsan && ninja -C build'
- run: sudo chown $USER:$USER /dev/kvm
- run: >
podman run --init --privileged --rm -i -v /dev/kvm:/dev/kvm -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx "env ASAN_OPTIONS=detect_leaks=0 ./build/pyvenv/bin/meson test -C build --setup thorough --suite func-quick --suite func-thorough -j $(($(nproc) / 2)) -t 5 --print-errorlogs --wrapper $(pwd)/scripts/run-functional-test.sh --max-lines=0"
# Limit parallelism because it creates timeout.
# iotests do not support sanitizers, so we run them in their own job
check-block:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
# we use image with download cache filled. Solves servers flakiness.
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx './configure --disable-docs --enable-debug-tcg --enable-debug-graph-lock --enable-debug-mutex && ninja -C build'
- run: sudo chown $USER:$USER /dev/kvm
- run: >
podman run --init --privileged --rm -i -v /dev/kvm:/dev/kvm -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx "./build/pyvenv/bin/meson test -C build --setup thorough --suite block --suite block-slow --suite block-thorough -t 5 --print-errorlogs"
check-avocado:
needs: checkapply
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
# add more time for all tests
- run: sed -i -e 's/timeout = .*/timeout = 3600/' $(find tests/avocado/ -type f)
# we use image with download cache filled. Solves servers flakiness.
- run: >
podman run --init --rm -it -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx './configure --disable-docs --enable-debug-tcg --enable-debug-graph-lock --enable-debug-mutex --enable-asan --enable-ubsan && ninja -C build'
- run: sudo chown $USER:$USER /dev/kvm
- run: >
podman run --init --privileged --rm -it -v /dev/kvm:/dev/kvm -v $(pwd):$(pwd) -w $(pwd)
docker.io/pbolinaro/qemu-ci:debian-precache-tests
bash -cx "env ASAN_OPTIONS=detect_leaks=0 make -k check-avocado V=1"
41 changes: 41 additions & 0 deletions .github/workflows/containers.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,41 @@
on:
schedule:
- cron: '0 6 * * *'
workflow_dispatch:

permissions: write-all

jobs:
build_container:
runs-on: ubuntu-24.04
strategy:
fail-fast: false
matrix:
# cd tests/docker/dockerfiles/
# ls *docker | sed -e 's/.docker//' | tr '\n' ','
# remove: debian-bootstrap,debian-toolchain
container: [alpine,centos9,debian-all-test-cross,debian-amd64-cross,debian-arm64-cross,debian-armhf-cross,debian,debian-hexagon-cross,debian-i686-cross,debian-legacy-test-cross,debian-loongarch-cross,debian-mips64el-cross,debian-mipsel-cross,debian-ppc64el-cross,debian-riscv64-cross,debian-s390x-cross,debian-tricore-cross,debian-xtensa-cross,fedora,fedora-rust-nightly,fedora-win64-cross,opensuse-leap,python,ubuntu2204]
steps:
- uses: actions/checkout@v4
- run: make docker-image-${{matrix.container}} RUNC=podman V=1
- run: podman tag qemu/${{matrix.container}} docker.io/pbolinaro/qemu-ci:${{matrix.container}}
- run: podman login -u pbolinaro -p ${{secrets.DOCKERHUB_PASSWORD}}
- run: podman push docker.io/pbolinaro/qemu-ci:${{matrix.container}}

build_container_debian-precache-tests:
runs-on: ubuntu-24.04
steps:
# we clean up runner first, to get more disk space
- run: docker system prune -af && sudo rm -rf /opt/*
- uses: actions/checkout@v4
- run: make docker-image-debian RUNC=podman V=1
# fill download cache for functional and check-avocado
# running check-avocado without any qemu binary will only download data
# in /root/avocado
- run: >
podman run -it -v $(pwd):$(pwd) -w $(pwd) qemu/debian
./precache_tests.sh
# commit result as a new image. Cache will be in /root/.cache and /root/avocado
- run: podman commit "$(podman ps -aq)" docker.io/pbolinaro/qemu-ci:debian-precache-tests
- run: podman login -u pbolinaro -p ${{secrets.DOCKERHUB_PASSWORD}}
- run: podman push docker.io/pbolinaro/qemu-ci:debian-precache-tests
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