Pu Lehui <pulehui@xxxxxxxxxxxxxxx> writes: > From: Pu Lehui <pulehui@xxxxxxxxxx> > > This patch adds 12 function arguments support for riscv64 bpf > trampoline. The current bpf trampoline supports <= sizeof(u64) bytes > scalar arguments [0] and <= 16 bytes struct arguments [1]. Therefore, we > focus on the situation where scalars are at most XLEN bits and > aggregates whose total size does not exceed 2×XLEN bits in the riscv > calling convention [2]. > > Link: https://elixir.bootlin.com/linux/v6.8/source/kernel/bpf/btf.c#L6184 [0] > Link: https://elixir.bootlin.com/linux/v6.8/source/kernel/bpf/btf.c#L6769 [1] > Link: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/releases/download/draft-20230929-e5c800e661a53efe3c2678d71a306323b60eb13b/riscv-abi.pdf [2] > Signed-off-by: Pu Lehui <pulehui@xxxxxxxxxx> > Acked-by: Björn Töpel <bjorn@xxxxxxxxxx> > Reviewed-by: Björn Töpel <bjorn@xxxxxxxxxxxx> Acked-by: Puranjay Mohan <puranjay@xxxxxxxxxx> Thanks, Puranjay
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