Re: [PATCH 6/9] riscv: bpf: Move bpf_jit_alloc_exec() and bpf_jit_free_exec() to core

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Subject: Re: [PATCH 6/9] riscv: bpf: Move bpf_jit_alloc_exec() and bpf_jit_free_exec() to core
From: Luke Nelson <luke.r.nels@xxxxxxxxx>
Date: Mon, 29 Mar 2021 13:41:13 -0700
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, Andrey Konovalov <andreyknvl@xxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, Björn Töpel <bjorn@xxxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Andrii Nakryiko <andrii@xxxxxxxxxx>, Martin KaFai Lau <kafai@xxxxxx>, Song Liu <songliubraving@xxxxxx>, Yonghong Song <yhs@xxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, KP Singh <kpsingh@xxxxxxxxxx>, Xi Wang <xi.wang@xxxxxxxxx>, linux-riscv <linux-riscv@xxxxxxxxxxxxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx, Networking <netdev@xxxxxxxxxxxxxxx>, bpf <bpf@xxxxxxxxxxxxxxx>
In-reply-to: <20210330022454.3d0feda2@xhacker>

> We will drop the executable permissions of the code pages from the
> mapping at allocation time soon. Move bpf_jit_alloc_exec() and
> bpf_jit_free_exec() to bpf_jit_core.c so that they can be shared by
> both RV64I and RV32I.

Looks good to me.

Acked-by: Luke Nelson <luke.r.nels@xxxxxxxxx>

References:
- [PATCH 0/9] riscv: improve self-protection
  - From: Jisheng Zhang
- [PATCH 6/9] riscv: bpf: Move bpf_jit_alloc_exec() and bpf_jit_free_exec() to core
  - From: Jisheng Zhang

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