linux-kernel - [PATCH 0/1] Move {idmap_pg_dir,tramp_pg_dir,swapper_pg

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Message-Id: <20180620085755.20045-1-yaojun8558363@gmail.com>
Date:   Wed, 20 Jun 2018 16:57:54 +0800
From:   Jun Yao <yaojun8558363@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     catalin.marinas@....com, will.deacon@....com,
        ard.biesheuvel@...aro.org, james.morse@....com,
        linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com
Subject: [PATCH 0/1] Move {idmap_pg_dir,tramp_pg_dir,swapper_pg_dir}

This patch moves {idmap_pg_dir,tramp_pg_dir,swapper_pg_dir} to .rodata
section, which makes KSMA more difficult. At the same time, it is more
concise than the previous patches[1][2]. As James Morse suggested[2],
this patch updates swapper_pg_dir through the fixmap entry.

[1] http://www.openwall.com/lists/kernel-hardening/2018/05/31/1
[2] https://patchwork.kernel.org/patch/10449589/

Jun Yao (1):
  arm64/mm: move {idmap_pg_dir,tramp_pg_dir,swapper_pg_dir} to .rodata
    section

 arch/arm64/include/asm/pgalloc.h | 19 +++++++++++++++++++
 arch/arm64/kernel/vmlinux.lds.S  | 32 ++++++++++++++++++--------------
 arch/arm64/mm/mmu.c              | 23 +++++++++++++++++++----
 3 files changed, 56 insertions(+), 18 deletions(-)

-- 
2.17.1