Hi,
The simple patchset tries to enable kfunc call for arm64. Patch #1 just
overrides bpf_jit_supports_kfunc_call() to enable kfunc call, patch #2
unexports the subtests in ksyms_module.c to fix the confusion in test
output and patch #3 add a test in ksyms_module.c to ensure s32 is
sufficient for kfunc offset.
Change Log:
v3:
* patch #2: newly-addded to unexport unnecessary subtests
* patch #3: use kallsyms_find() instead of reimplementing it.
* patch #3: ensure kfunc call is supported before checking
whether s32 will be overflowed or not.
v2: https://lore.kernel.org/bpf/20220127071532.384888-1-houtao1@xxxxxxxxxx/
* add a test to check whether imm will be overflowed for kfunc call
v1: https://lore.kernel.org/bpf/20220119144942.305568-1-houtao1@xxxxxxxxxx
Hou Tao (3):
bpf, arm64: enable kfunc call
selftests/bpf: do not export subtest as standalone test
selftests/bpf: check whether s32 is sufficient for kfunc offset
arch/arm64/net/bpf_jit_comp.c | 5 ++
.../selftests/bpf/prog_tests/ksyms_module.c | 46 ++++++++++++++++++-
.../bpf/prog_tests/xdp_adjust_frags.c | 6 ---
.../bpf/prog_tests/xdp_adjust_tail.c | 4 +-
.../bpf/prog_tests/xdp_cpumap_attach.c | 4 +-
.../bpf/prog_tests/xdp_devmap_attach.c | 2 +-
6 files changed, 54 insertions(+), 13 deletions(-)
--
2.20.1
