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authorAlexei Starovoitov <ast@kernel.org>2018-12-08 00:30:49 +0300
committerAlexei Starovoitov <ast@kernel.org>2018-12-08 00:30:49 +0300
commit6baefa1aa46f0e90aefbd13b8c926e89068fabba (patch)
tree376ae3306dbeee7a83d76f705159e7de1d61b464 /include/linux/filter.h
parent17f6c83fb5ebf7db4fcc94a5be4c22d5a7bfe428 (diff)
parentc099f3f413f354ecdd518e4be6a232592e91d5b9 (diff)
downloadlinux-6baefa1aa46f0e90aefbd13b8c926e89068fabba.tar.xz
Merge branch 'support-alu32_arsh'
Jiong Wang says: ==================== BPF_ALU | BPF_ARSH | BPF_* were rejected by commit: 7891a87efc71 ("bpf: arsh is not supported in 32 bit alu thus reject it"). As explained in the commit message, this is due to there is no complete support for them on interpreter and various JIT compilation back-ends. This patch set is a follow-up which completes the missing bits. This also pave the way for running bpf program compiled with ALU32 instruction enabled by specifing -mattr=+alu32 to LLVM for which case there is likely to have more BPF_ALU | BPF_ARSH insns that will trigger the rejection code. test_verifier.c is updated accordingly. I have tested this patch set on x86-64 and NFP, I need help of review and test on the arch changes (mips/ppc/s390). Note, there might be merge confict on mips change which is better to be applied on top of: commit: 20b880a05f06 ("mips: bpf: fix encoding bug for mm_srlv32_op"), which is on mips-fixes branch at the moment. Thanks. v1->v2: - Fix ppc implementation bug. Should zero high bits explicitly. ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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