linux-kernel - Re: [PATCH] arm64: set "rodata=on" as default

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Message-ID: <3009e608-46ff-42d4-9898-0d7d8107ac06@amperemail.onmicrosoft.com>
Date: Thu, 24 Oct 2024 11:57:36 +0800
From: Shijie Huang <shijie@...eremail.onmicrosoft.com>
To: Will Deacon <will@...nel.org>,
 Huang Shijie <shijie@...amperecomputing.com>
Cc: catalin.marinas@....com, patches@...erecomputing.com,
 cl@...amperecomputing.com, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, adamli@...amperecomputing.com
Subject: Re: [PATCH] arm64: set "rodata=on" as default


On 2024/10/24 0:35, Will Deacon wrote:
> The "full" behaviour on arm64 is equivalent to the "on" behaviour on x86
> so the more consistent change to make would be:
>
>    - Make our "on" behaviour be what is currently done by "full"
>    - Remove RODATA_FULL_DEFAULT_ENABLED
>    - Introduce a new option (e.g. "rodata=noalias") which would match the
>      current "on" behaviour
>    - Update (simplify) the documentation
>
> That way, the default behaviour and the "on"/"off" options follow the
> x86 behaviour and expert users can fine-tune the security/performance
> trade-off using the "noalias" option.

Okay. I will do it in the next version.


Thanks

Huang Shijie