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Message-ID: <aF68Y5aQFBqShtjD@willie-the-truck>
Date: Fri, 27 Jun 2025 16:44:35 +0100
From: Will Deacon <will@...nel.org>
To: Huang Shijie <shijie@...amperecomputing.com>
Cc: catalin.marinas@....com, anshuman.khandual@....com, corbet@....net,
patches@...erecomputing.com, cl@...ux.com,
akpm@...ux-foundation.org, thuth@...hat.com, rostedt@...dmis.org,
xiongwei.song@...driver.com, ardb@...nel.org,
inux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 1/2 fix-v2 ] arm64: refactor the rodata=xxx
Digging up an old thread...
On Tue, Dec 17, 2024 at 03:17:15PM +0800, Huang Shijie wrote:
> As per admin guide documentation, "rodata=on" should be the default on
> platforms. Documentation/admin-guide/kernel-parameters.txt describes
> these options as
>
> 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]
>
> But on arm64 platform, "rodata=full" is the default instead. This patch
> implements the following changes.
>
> - Make "rodata=on" behaviour same as the original "rodata=full"
> - Make "rodata=noalias" (new) behaviour same as the original "rodata=on"
> - Drop the original "rodata=full"
> - Add comment for arch_parse_debug_rodata()
> - Update kernel-parameters.txt as required
>
> After this patch, the "rodata=on" will be the default on arm64 platform
> as well.
>
> Signed-off-by: Huang Shijie <shijie@...amperecomputing.com>
> ---
> Add more comment for "rodata=noalias" in arch_parse_debug_rodata() from Ard.
> ---
> .../admin-guide/kernel-parameters.txt | 2 +-
> arch/arm64/include/asm/setup.h | 28 +++++++++++++++++--
> 2 files changed, 27 insertions(+), 3 deletions(-)
Sorry, but I'd missed this as you'd sent it as a reply to an existing
series. When you send a new version of a patch, please can you post it
as a new thread with an updated version?
I think the idea of this series is good, so if you send a v5 against
mainline then I can review it.
Thanks,
Will
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