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Diffstat (limited to 'tools/testing/selftests/bpf/README.rst')
| -rw-r--r-- | tools/testing/selftests/bpf/README.rst | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst index e885d351595f..66acfcf15ff2 100644 --- a/tools/testing/selftests/bpf/README.rst +++ b/tools/testing/selftests/bpf/README.rst @@ -43,3 +43,24 @@ This is due to a llvm BPF backend bug. The fix https://reviews.llvm.org/D78466 has been pushed to llvm 10.x release branch and will be available in 10.0.1. The fix is available in llvm 11.0.0 trunk. + +BPF CO-RE-based tests and Clang version +======================================= + +A set of selftests use BPF target-specific built-ins, which might require +bleeding-edge Clang versions (Clang 12 nightly at this time). + +Few sub-tests of core_reloc test suit (part of test_progs test runner) require +the following built-ins, listed with corresponding Clang diffs introducing +them to Clang/LLVM. These sub-tests are going to be skipped if Clang is too +old to support them, they shouldn't cause build failures or runtime test +failures: + + - __builtin_btf_type_id() ([0], [1], [2]); + - __builtin_preserve_type_info(), __builtin_preserve_enum_value() ([3], [4]). + + [0] https://reviews.llvm.org/D74572 + [1] https://reviews.llvm.org/D74668 + [2] https://reviews.llvm.org/D85174 + [3] https://reviews.llvm.org/D83878 + [4] https://reviews.llvm.org/D83242 |