John Fastabend 514d6c1959 bpf: Document sockmap '-target bpf' requirement for PROG_TYPE_SK_MSG ... BPF_PROG_TYPE_SK_MSG programs use a 'void *' for both data and the data_end pointers. Additionally, the verifier ensures that every accesses into the values is a __u64 read. This correctly maps on to the BPF 64-bit architecture. However, to ensure that when building on 32bit architectures that clang uses correct types the '-target bpf' option _must_ be specified. To make this clear add a note to the Documentation. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2018-04-23 23:42:21 +02:00
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bpf_design_QA.txt	bpf: document answers to common questions about BPF	2017-11-01 21:01:47 +09:00
bpf_devel_QA.txt	bpf: Document sockmap '-target bpf' requirement for PROG_TYPE_SK_MSG	2018-04-23 23:42:21 +02:00