linux-kernel - [PATCH bpf v2 0/3] bpf: invalidate unused part of bpf_prog

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Message-ID: <20220425203947.3311308-1-song@kernel.org>
Date:   Mon, 25 Apr 2022 13:39:44 -0700
From:   Song Liu <song@...nel.org>
To:     <bpf@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <andrii@...nel.org>, <ast@...nel.org>, <daniel@...earbox.net>,
        <kernel-team@...com>, <hch@...radead.org>, <peterz@...radead.org>,
        <torvalds@...ux-foundation.org>, Song Liu <song@...nel.org>
Subject: [PATCH bpf v2 0/3] bpf: invalidate unused part of bpf_prog_pack

Note: while prefixed with "bpf", this set is based on Linus' master branch.

This is v2 of [1]. It is revised based on Peter's feedback. The patch is
also split into 3.

[1] https://lore.kernel.org/linux-mm/20220421072212.608884-1-song@kernel.org/

Song Liu (3):
  bpf: fill new bpf_prog_pack with illegal instructions
  x86/alternative: introduce text_poke_set
  bpf: introduce bpf_arch_text_invalidate for bpf_prog_pack

 arch/x86/include/asm/text-patching.h |  1 +
 arch/x86/kernel/alternative.c        | 70 ++++++++++++++++++++++++----
 arch/x86/net/bpf_jit_comp.c          |  5 ++
 include/linux/bpf.h                  |  1 +
 kernel/bpf/core.c                    | 18 +++++--
 5 files changed, 81 insertions(+), 14 deletions(-)

--
2.30.2