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Date:   Thu, 10 Mar 2022 10:15:37 -0800
From:   Kees Cook <>
        Dan Li <>,,
Cc:     Kees Cook <>,,,,,
Subject: Re: (subset) [PATCH v3 1/2] AARCH64: Add gcc Shadow Call Stack support

On Wed, 2 Mar 2022 23:43:23 -0800, Dan Li wrote:
> Shadow call stacks will be available in GCC >= 12, this patch makes
> the corresponding kernel configuration available when compiling
> the kernel with the gcc.
> Note that the implementation in GCC is slightly different from Clang.
> With SCS enabled, functions will only pop x30 once in the epilogue,
> like:
> [...]

I'm taking this one now so it'll make the merge window. We can hammer
out the lkdtm test after that.

Applied to for-next/hardening, thanks!

[1/2] arm64: Add gcc Shadow Call Stack support

Kees Cook

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