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| author |   Zi Shen Lim <zlim.lnx@gmail.com> | 2014-12-03 08:38:01 +0000 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2014-12-03 18:04:09 +0000 |
| commit | 51c9fbb1b146f3336a93d398c439b6fbfe5ab489 (patch) | |
| tree | 2928e70795aaf5fba8d0263ac06b9205d42364d7 /security/tomoyo | |
| parent | arm64: Implement support for read-mostly sections (diff) | |
| download | linux-dev-51c9fbb1b146f3336a93d398c439b6fbfe5ab489.tar.xz linux-dev-51c9fbb1b146f3336a93d398c439b6fbfe5ab489.zip | |
arm64: bpf: lift restriction on last instruction
Earlier implementation assumed last instruction is BPF_EXIT.
Since this is no longer a restriction in eBPF, we remove this
limitation.
Per Alexei Starovoitov [1]:
> classic BPF has a restriction that last insn is always BPF_RET.
> eBPF doesn't have BPF_RET instruction and this restriction.
> It has BPF_EXIT insn which can appear anywhere in the program
> one or more times and it doesn't have to be last insn.
[1] https://lkml.org/lkml/2014/11/27/2
Fixes: e54bcde3d69d ("arm64: eBPF JIT compiler")
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'security/tomoyo')
0 files changed, 0 insertions, 0 deletions