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authorDavid S. Miller <davem@davemloft.net>2017-05-10 11:38:07 -0700
committerDavid S. Miller <davem@davemloft.net>2017-05-11 14:19:00 -0400
commite07b98d9bffe410019dfcf62c3428d4a96c56a2c (patch)
tree52a3aede39b1bac6a409586bcdd272d9aa958868 /block/blk-mq.h
parentc5fc9692d101d1318b0f53f9f691cd88ac029317 (diff)
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bpf: Add strict alignment flag for BPF_PROG_LOAD.
Add a new field, "prog_flags", and an initial flag value BPF_F_STRICT_ALIGNMENT. When set, the verifier will enforce strict pointer alignment regardless of the setting of CONFIG_EFFICIENT_UNALIGNED_ACCESS. The verifier, in this mode, will also use a fixed value of "2" in place of NET_IP_ALIGN. This facilitates test cases that will exercise and validate this part of the verifier even when run on architectures where alignment doesn't matter. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Daniel Borkmann <daniel@iogearbox.net>
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