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Message-ID: <20230717124247.00001f1c@Huawei.com>
Date: Mon, 17 Jul 2023 12:42:47 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Mark Brown <broonie@...nel.org>
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Subject: Re: [PATCH 04/35] arm64/gcs: Document the ABI for Guarded Control
Stacks
On Sun, 16 Jul 2023 22:51:00 +0100
Mark Brown <broonie@...nel.org> wrote:
> Add some documentation of the userspace ABI for Guarded Control Stacks.
>
> Signed-off-by: Mark Brown <broonie@...nel.org>
Hi Mark,
Nice document. All I could find on a first read was one typo...
...
> +7. ptrace extensions
> +---------------------
> +
> +* A new regset NT_ARM_GCS is defined for use with PTRACE_GETREGSET and
> + PTRACE_SETREGSET.
> +
> +* Due to the complexity surrounding allocation and deallocation of stakcs and
stacks
> + lack of practical application changes to the GCS configuration via ptrace
> + are not supported.
> +
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