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Date:   Tue, 13 Jun 2017 01:17:14 +0200
From:   Daniel Borkmann <>
To:     Shubham Bansal <>
CC:     Kees Cook <>,
        Network Development <>,
        "David S. Miller" <>,
        Alexei Starovoitov <>,
        Russell King <>,
        LKML <>, Andrew Lunn <>
Subject: Re: [PATCH v2] arm: eBPF JIT compiler

On 06/12/2017 05:40 PM, Shubham Bansal wrote:
>> Did you manage to get tail calls tested as well (I assume so since you
>> implemented emit_bpf_tail_call() in the patch but just out of curiosity)?
> I didn't try it exclusively, I thought test_bpf must have tested it. Doesn't it?

In samples/bpf/ there's sockex3* that would exercise it, or
alternatively in iproute2 repo under examples/bpf/ there's
bpf_cyclic.c and bpf_tailcall.c as a prog.

Hm, generally, we should really add a test case also to BPF
selftest suite to facilitate that. I'll likely do that for
the next batch of BPF patches.

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