8bbb58a3c6
At the moment we check the compiler's ability to compile MTE enabled code, but guard all the Makefile rules by it. As a consequence a broken or not capable compiler just doesn't do anything, and make happily returns without any error message, but with no programs created. Since the MTE feature is only supported by recent aarch64 compilers (not all stable distro compilers support it), having an explicit message seems like a good idea. To not break building multiple targets, we let make proceed without errors. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Mark Brown <broone@kernel.org> Link: https://lore.kernel.org/r/20210319165334.29213-9-andre.przywara@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
KSelfTest ARM64
===============
- These tests are arm64 specific and so not built or run but just skipped
completely when env-variable ARCH is found to be different than 'arm64'
and `uname -m` reports other than 'aarch64'.
- Holding true the above, ARM64 KSFT tests can be run within the KSelfTest
framework using standard Linux top-level-makefile targets:
$ make TARGETS=arm64 kselftest-clean
$ make TARGETS=arm64 kselftest
or
$ make -C tools/testing/selftests TARGETS=arm64 \
INSTALL_PATH=<your-installation-path> install
or, alternatively, only specific arm64/ subtargets can be picked:
$ make -C tools/testing/selftests TARGETS=arm64 ARM64_SUBTARGETS="tags signal" \
INSTALL_PATH=<your-installation-path> install
Further details on building and running KFST can be found in:
Documentation/dev-tools/kselftest.rst