netdev - Re: [PATCH bpf 2/2] bpf, mips: limit to 33 tail calls

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Date:   Thu, 12 Dec 2019 17:19:22 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Paul Burton <paulburton@...nel.org>
Cc:     Paul Chaignon <paul.chaignon@...nge.com>,
        Björn Töpel <bjorn.topel@...il.com>,
        Mahshid Khezri <khezri.mahshid@...il.com>,
        paul.chaignon@...il.com, bpf@...r.kernel.org,
        netdev@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>
Subject: Re: [PATCH bpf 2/2] bpf, mips: limit to 33 tail calls

On Tue, Dec 10, 2019 at 03:23:16PM -0800, Paul Burton wrote:
> On Mon, Dec 09, 2019 at 07:52:52PM +0100, Paul Chaignon wrote:
> > All BPF JIT compilers except RISC-V's and MIPS' enforce a 33-tail calls
> > limit at runtime.  In addition, a test was recently added, in tailcalls2,
> > to check this limit.
> > 
> > This patch updates the tail call limit in MIPS' JIT compiler to allow
> > 33 tail calls.
> > 
> > Fixes: b6bd53f9c4e8 ("MIPS: Add missing file for eBPF JIT.")
> > Reported-by: Mahshid Khezri <khezri.mahshid@...il.com>
> > Signed-off-by: Paul Chaignon <paul.chaignon@...nge.com>
> 
> I'd be happy to take this through mips-fixes, but equally happy for it
> to go through the BPF/net trees in which case:

We took the series via bpf, thanks!