Florent Revest 90564f1e3d bpf, arm64: Support struct arguments in the BPF trampoline ... This extends the BPF trampoline JIT to support attachment to functions that take small structures (up to 128bit) as argument. This is trivially achieved by saving/restoring a number of "argument registers" rather than a number of arguments. The AAPCS64 section 6.8.2 describes the parameter passing ABI. "Composite types" (like C structs) below 16 bytes (as enforced by the BPF verifier) are provided as part of the 8 argument registers as explained in the section C.12. Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: Xu Kuohai <xukuohai@huawei.com> Link: https://lore.kernel.org/bpf/20230511140507.514888-1-revest@chromium.org		2023-05-15 21:17:22 +02:00
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bpf_jit_comp.c	bpf, arm64: Support struct arguments in the BPF trampoline	2023-05-15 21:17:22 +02:00
bpf_jit.h	bpf, arm64: Fixed a BTI error on returning to patched function	2023-04-03 17:44:03 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00