On 4/16/2022 1:12 AM, Andrii Nakryiko wrote: > On Thu, Apr 14, 2022 at 9:10 AM Xu Kuohai <xukuohai@xxxxxxxxxx> wrote: >> >> Add bpf trampoline support for arm64. Most of the logic is the same as >> x86. >> >> fentry before bpf trampoline hooked: >> mov x9, x30 >> nop >> >> fentry after bpf trampoline hooked: >> mov x9, x30 >> bl <bpf_trampoline> >> >> Tested on qemu, result: >> #55 fentry_fexit:OK >> #56 fentry_test: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 >> #101 modify_return:OK >> >> Signed-off-by: Xu Kuohai <xukuohai@xxxxxxxxxx> >> Acked-by: Song Liu <songliubraving@xxxxxx> >> --- > > Can you please also take a look at [0], which is an ongoing work to > add support for BPF cookie to BPF trampoline-based BPF programs. It's > very close to being done, so it would be good if you can implement > that at the same time. OK, I'll take a look and try to implemnt it.
