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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
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