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Date:   Mon, 6 Dec 2021 11:22:30 +0800
From:   Dan Li <>
        Nick Desaulniers <>,,,
Subject: Re: [PATCH] [PATCH,v2,1/1,AARCH64][PR102768] aarch64: Add compiler
 support for Shadow Call Stack

On 12/6/21 10:41 AM, Dan Li wrote:
> Shadow Call Stack can be used to protect the return address of a
> function at runtime, and clang already supports this feature[1].
> To enable SCS in user mode, in addition to compiler, other support
> is also required (as discussed in [2]). This patch only adds basic
> support for SCS from the compiler side, and provides convenience
> for users to enable SCS.
> For linux kernel, only the support of the compiler is required.
> [1]
> [2]
> Signed-off-by: Dan Li <>
Add more reviewers :)

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