linux-kernel - Re: [PATCH] RISC-V/bpf: Enable bpf_probe

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Date:   Sun, 3 Jul 2022 22:53:41 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Yixun Lan <dlan@...too.org>
Cc:     Palmer Dabbelt <palmer@...belt.com>,
        linux-riscv@...ts.infradead.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH] RISC-V/bpf: Enable bpf_probe_read{, str}()

On Sun, Jul 03, 2022 at 09:09:24PM +0800, Yixun Lan wrote:
> Enable this option to fix a bcc error in RISC-V platform
> 
> And, the error shows as follows:

These should not be enabled on new platforms.  Use the proper helpers
to probe kernel vs user pointers instead.