Linux-kselftest-mirror August 2021

linux-kselftest-mirror@lists.linaro.org

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[RFC PATCH v2 0/2] Introduce XSAVE/XRSTOR self-test

by Pengfei Xu

The XSAVE feature set supports the saving and restoring of state components, and XSAVE feature is used for process context switching. The XSAVE state components include x87 state for FPU execution environment, SSE state, AVX state and so on. In order to ensure that XSAVE works correctly, add XSAVE basic test for XSAVE architecture functionality. This patch set tests and verifies the basic functions of XSAVE/XRSTOR in user space; during and after signal processing on the x86 platform, the XSAVE contents of the process should not be changed. This series introduces only the most basic XSAVE tests. In the future, the intention is to continue expanding the scope of these selftests to include more kernel XSAVE-related functionality and XSAVE-managed features like AMX and shadow stacks. Pengfei Xu (2): selftests/xsave: test basic XSAVE architecture functionality selftests/xsave: add xsave test during and after signal handling tools/testing/selftests/Makefile | 1 + tools/testing/selftests/xsave/.gitignore | 3 + tools/testing/selftests/xsave/Makefile | 6 + tools/testing/selftests/xsave/xsave_common.h | 246 ++++++++++++++++++ .../selftests/xsave/xsave_instruction.c | 83 ++++++ .../selftests/xsave/xsave_signal_handle.c | 184 +++++++++++++ 6 files changed, 523 insertions(+) create mode 100644 tools/testing/selftests/xsave/.gitignore create mode 100644 tools/testing/selftests/xsave/Makefile create mode 100644 tools/testing/selftests/xsave/xsave_common.h create mode 100644 tools/testing/selftests/xsave/xsave_instruction.c create mode 100644 tools/testing/selftests/xsave/xsave_signal_handle.c -- 2.20.1

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Linux-kselftest-mirror August 2021