linux-kernel - Re: [PATCH v2] arm64: bpf: Fix branch offset in JIT

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Message-ID: <20200916131702.GB5316@myrica>
Date:   Wed, 16 Sep 2020 15:17:02 +0200
From:   Jean-Philippe Brucker <jean-philippe@...aro.org>
To:     Yauheni Kaliuta <yauheni.kaliuta@...hat.com>
Cc:     Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Will Deacon <will@...nel.org>, bpf@...r.kernel.org,
        ardb@...nel.org, naresh.kamboju@...aro.org,
        Jiri Olsa <jolsa@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Zi Shen Lim <zlim.lnx@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: bpf: Fix branch offset in JIT

On Wed, Sep 16, 2020 at 03:39:37PM +0300, Yauheni Kaliuta wrote:
> If you start to amend extables, could you consider a change like
> 
> 05a68e892e89 ("s390/kernel: expand exception table logic to allow new handling options")
> 
> and implementation of BPF_PROBE_MEM then?

Commit 800834285361 ("bpf, arm64: Add BPF exception tables") should have
taken care of that, no?

Thanks,
Jean