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SubjectRe: [PATCH bpf-next v5 5/6] bpf, arm64: bpf trampoline for arm64
On Wed, May 18, 2022 at 3:54 PM Xu Kuohai <xukuohai@huawei.com> wrote:
>
> Add bpf trampoline support for arm64. Most of the logic is the same as
> x86.
>
> Tested on raspberry pi 4b and qemu with KASLR disabled (avoid long jump),
> result:
> #9 /1 bpf_cookie/kprobe:OK
> #9 /2 bpf_cookie/multi_kprobe_link_api:FAIL
> #9 /3 bpf_cookie/multi_kprobe_attach_api:FAIL
> #9 /4 bpf_cookie/uprobe:OK
> #9 /5 bpf_cookie/tracepoint:OK
> #9 /6 bpf_cookie/perf_event:OK
> #9 /7 bpf_cookie/trampoline:OK
> #9 /8 bpf_cookie/lsm:OK
> #9 bpf_cookie:FAIL
> #18 /1 bpf_tcp_ca/dctcp:OK
> #18 /2 bpf_tcp_ca/cubic:OK
> #18 /3 bpf_tcp_ca/invalid_license:OK
> #18 /4 bpf_tcp_ca/dctcp_fallback:OK
> #18 /5 bpf_tcp_ca/rel_setsockopt:OK
> #18 bpf_tcp_ca:OK
> #51 /1 dummy_st_ops/dummy_st_ops_attach:OK
> #51 /2 dummy_st_ops/dummy_init_ret_value:OK
> #51 /3 dummy_st_ops/dummy_init_ptr_arg:OK
> #51 /4 dummy_st_ops/dummy_multiple_args:OK
> #51 dummy_st_ops:OK
> #55 fentry_fexit:OK
> #56 fentry_test:OK
> #57 /1 fexit_bpf2bpf/target_no_callees:OK
> #57 /2 fexit_bpf2bpf/target_yes_callees:OK
> #57 /3 fexit_bpf2bpf/func_replace:OK
> #57 /4 fexit_bpf2bpf/func_replace_verify:OK
> #57 /5 fexit_bpf2bpf/func_sockmap_update:OK
> #57 /6 fexit_bpf2bpf/func_replace_return_code:OK
> #57 /7 fexit_bpf2bpf/func_map_prog_compatibility:OK
> #57 /8 fexit_bpf2bpf/func_replace_multi:OK
> #57 /9 fexit_bpf2bpf/fmod_ret_freplace:OK
> #57 fexit_bpf2bpf:OK
> #58 fexit_sleep:OK
> #59 fexit_stress:OK
> #60 fexit_test:OK
> #67 get_func_args_test:OK
> #68 get_func_ip_test:OK
> #104 modify_return:OK
> #237 xdp_bpf2bpf:OK
>
> bpf_cookie/multi_kprobe_link_api and bpf_cookie/multi_kprobe_attach_api
> failed due to lack of multi_kprobe on arm64.
>
> Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
> Acked-by: Song Liu <songliubraving@fb.com>

Acked-by: KP Singh <kpsingh@kernel.org>

Thanks! This is exciting.

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