bpf: Enable r11 based insns

BPF_REG_PARAMS (r11) is used for stack argument accesses and
the following are only insns with r11 presence:
    - load incoming stack arg
    - store register to outgoing stack arg
    - store immediate to outgoing stack arg

The detailed insn format can be found in is_stack_arg_ldx/st/stx()
helpers. After this patch, stack arg ldx/st/stx insns become valid
for kernel and these insns can be properly checked by verifier.

The LLVM compiler [1] implemented the above BPF_REG_PARAMS insns.

  [1] https://github.com/llvm/llvm-project/pull/189060

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260513045059.2391192-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

0 files changed, 0 insertions, 0 deletions