On 4/16/2022 9:57 AM, Xu Kuohai wrote:
On 4/16/2022 1:12 AM, Andrii Nakryiko wrote:
On Thu, Apr 14, 2022 at 9:10 AM Xu Kuohai xukuohai@huawei.com 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@huawei.com Acked-by: Song Liu songliubraving@fb.com
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.
already implemented, but there are some conflicts between these two series, will send v3 after trampoline cookie are merged.