linux-kernel - [PATCH V6 0/2] arm64: refactor the rodata=xxx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250703094212.20294-1-shijie@os.amperecomputing.com>
Date: Thu,  3 Jul 2025 17:42:10 +0800
From: Huang Shijie <shijie@...amperecomputing.com>
To: catalin.marinas@....com,
	will@...nel.org,
	corbet@....net
Cc: patches@...erecomputing.com,
	cl@...ux.com,
	yang@...amperecomputing.com,
	akpm@...ux-foundation.org,
	paulmck@...nel.org,
	rostedt@...dmis.org,
	Neeraj.Upadhyay@....com,
	bp@...en8.de,
	ardb@...nel.org,
	anshuman.khandual@....com,
	suzuki.poulose@....com,
	gshan@...hat.com,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	rdunlap@...radead.org,
	Huang Shijie <shijie@...amperecomputing.com>
Subject: [PATCH V6 0/2] arm64: refactor the rodata=xxx

>From Documentation/admin-guide/kernel-parameters.txt, we know that:
 rodata=	[KNL,EARLY]
	on	Mark read-only kernel memory as read-only (default).
	off	Leave read-only kernel memory writable for debugging.
	full	Mark read-only kernel memory and aliases as read-only
		[arm64]

So the "rodata=on" is the default.

But the current code does not follow the document, it makes "rodata=full"
as the default.

This patch set follows Anshuman Khandual's suggetions.
It makes the "rodata=on" as the default, and removes
the CONFIG_RODATA_FULL_DEFAULT_ENABLED.

v6:
  Fix a small issue pointed by Randy Dunlap.

v5:
  Rebase this patch set with linux-next20250627
  https://lists.infradead.org/pipermail/linux-arm-kernel/2025-June/1040297.html

v4:
  Follows Anshuman Khandual/Ard Biesheuvel's suggetions:
  - Change commit message format.
  - Change the titile name.
  - others
  https://lists.infradead.org/pipermail/linux-arm-kernel/2024-December/985629.html

v3:
  Follows Anshuman Khandual's suggetions:
  - Merge patch 1 and patch 3 into one patch.
  - Remove patch 4
  - update comments and document.
   https://lists.infradead.org/pipermail/linux-arm-kernel/2024-December/984344.html

v2:
  Follows Will's suggetions.
  Add a new file fine-tuning-tips.rst for the expert users.
   https://lists.infradead.org/pipermail/linux-arm-kernel/2024-November/981190.html

v1:
   https://lists.infradead.org/pipermail/linux-arm-kernel/2024-October/971415.html


Huang Shijie (2):
  arm64: refactor the rodata=xxx
  arm64/Kconfig: Remove CONFIG_RODATA_FULL_DEFAULT_ENABLED

 .../admin-guide/kernel-parameters.txt         |  2 +-
 arch/arm64/Kconfig                            | 14 ----------
 arch/arm64/include/asm/setup.h                | 28 +++++++++++++++++--
 arch/arm64/mm/pageattr.c                      |  2 +-
 4 files changed, 28 insertions(+), 18 deletions(-)

-- 
2.40.1