On Wed, Dec 06, 2023 at 02:36:59AM -0800, Suren Baghdasaryan wrote: > Add tests for new UFFDIO_MOVE ioctl which uses uffd to move source > into destination buffer while checking the contents of both after > the move. After the operation the content of the destination buffer > should match the original source buffer's content while the source > buffer should be zeroed. Separate tests are designed for PMD aligned and > unaligned cases because they utilize different code paths in the kernel. > > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> > --- > tools/testing/selftests/mm/uffd-common.c | 24 +++ > tools/testing/selftests/mm/uffd-common.h | 1 + > tools/testing/selftests/mm/uffd-unit-tests.c | 189 +++++++++++++++++++ > 3 files changed, 214 insertions(+) This breaks the build in at least some configurations with separate output directories like those used by KernelCI: make KBUILD_BUILD_USER=KernelCI FORMAT=.xz ARCH=arm64 HOSTCC=gcc CROSS_COMPILE=aarch64-linux-gnu- CROSS_COMPILE_COMPAT=arm-linux-gnueabihf- CC="ccache aarch64-linux-gnu-gcc" O=/tmp/kci/linux/build -C/tmp/kci/linux -j10 kselftest-gen_tar (full logs for both arm64 and x86_64 at): https://storage.kernelci.org/next/master/next-20231208/arm64/defconfig/gcc-10/logs/kselftest.log https://storage.kernelci.org/next/master/next-20231208/x86_64/x86_64_defconfig/clang-17/logs/kselftest.log or tuxmake: make --silent --keep-going --jobs=16 O=/home/broonie/.cache/tuxmake/builds/25/build INSTALL_PATH=/home/broonie/.cache/tuxmake/builds/25/build/kselftest_install ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- CROSS_COMPILE_COMPAT=arm-linux-gnueabihf- kselftest-install The specific failure: aarch64-linux-gnu-gcc -Wall -I /tmp/kci/linux/tools/testing/selftests/../../.. -isystem /tmp/kci/linux/build/usr/include uffd-stress.c vm_util.c uffd-common.c -lrt -lpthread -lm -o /tmp/kci/linux/build/kselftest/mm/uffd-stress uffd-common.c: In function ‘move_page’: uffd-common.c:636:21: error: storage size of ‘uffdio_move’ isn’t known 636 | struct uffdio_move uffdio_move; | ^~~~~~~~~~~ uffd-common.c:643:21: error: ‘UFFDIO_MOVE_MODE_ALLOW_SRC_HOLES’ undeclared (first use in this function) 643 | uffdio_move.mode = UFFDIO_MOVE_MODE_ALLOW_SRC_HOLES; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ uffd-common.c:643:21: note: each undeclared identifier is reported only once for each function it appears in uffd-common.c:645:17: error: ‘UFFDIO_MOVE’ undeclared (first use in this function); did you mean ‘UFFDIO_COPY’? 645 | if (ioctl(ufd, UFFDIO_MOVE, &uffdio_move)) { | ^~~~~~~~~~~ | UFFDIO_COPY uffd-common.c:636:21: warning: unused variable ‘uffdio_move’ [-Wunused-variable] 636 | struct uffdio_move uffdio_move; | ^~~~~~~~~~~
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