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Date:   Wed, 23 Sep 2020 17:11:46 +0100
From:   Lorenz Bauer <>
To:     Alexei Starovoitov <>
Cc:     Maciej Fijalkowski <>,
        John Fastabend <>,
        Alexei Starovoitov <>,
        Daniel Borkmann <>,
        bpf <>,
        Network Development <>,
        Björn Töpel <>,
        "Karlsson, Magnus" <>,
        Andrii Nakryiko <>,
        Martin KaFai Lau <>
Subject: Re: [PATCH v8 bpf-next 0/7] bpf: tailcalls in BPF subprograms

On Fri, 18 Sep 2020 at 04:26, Alexei Starovoitov
<> wrote:
> Lorenz,
> if you can test it on cloudflare progs would be awesome.

Our programs all bpf_tail_call from the topmost function, so no calls
from subprogs. I stripped out our FORCE_INLINE flag, recompiled and
ran our testsuite. cls_redirect.c (also in the kernel selftests) has a
test failure that I currently can't explain, but I don't have the time
to look at it in detail right now.

Hopefully I can get back to this next week.


Lorenz Bauer  |  Systems Engineer
6th Floor, County Hall/The Riverside Building, SE1 7PB, UK

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