[PATCH v3 1/3] selftests: Add infrastructure for powerpc selftests

This commit adds a powerpc subdirectory to tools/testing/selftests, for tests that are powerpc specific. On other architectures nothing is built. The makefile supports cross compilation if the user sets ARCH and CROSS_COMPILE. Signed-off-by: Michael Ellerman --- v3: Add tags v2: No change

[PATCH v3 1/3] selftests: Add infrastructure for powerpc selftests

This commit adds a powerpc subdirectory to tools/testing/selftests, for tests that are powerpc specific. On other architectures nothing is built. The makefile supports cross compilation if the user sets ARCH and CROSS_COMPILE. Signed-off-by: Michael Ellerman mich...@ellerman.id.au --- v3: Add