The XSAVE feature set supports the saving and restoring of state components such as FPU, which is used for process context switching. In order to ensure that XSAVE works correctly, add XSAVE basic test for XSAVE architecture functionality. This patch set tests XSAVE/XRSTOR instructions on x86 platforms and verify if the XSAVE/XRSTOR works correctly during signal handling. Cases such as signal handling, process creation, other xstate(except FPU) tests for XSAVE check, etc. will be added to the Linux kernel self-test. If appropriate, it is even planned to add the [1] mentioned XSAVE issues reproduce and some XSAVE anomaly tests to the kernel self-test. [1]: https://lore.kernel.org/lkml/0000000000004c453905c30f8334@xxxxxxxxxx/ Pengfei Xu (2): selftests/xsave: test basic XSAVE architecture functionality selftests/xsave: add xsave test during 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
