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Date: Fri, 23 Aug 2024 10:41:55 +0100
From: Catalin Marinas <catalin.marinas@arm.com>
To: Mark Brown <broonie@kernel.org>
Cc: Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	Andrew Morton <akpm@linux-foundation.org>,
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Subject: Re: [PATCH v11 26/39] arm64/ptrace: Expose GCS via ptrace and core
 files
Message-ID: <ZshZYzWcdYdid7kG@arm.com>
References: <20240822-arm64-gcs-v11-0-41b81947ecb5@kernel.org>
 <20240822-arm64-gcs-v11-26-41b81947ecb5@kernel.org>
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In-Reply-To: <20240822-arm64-gcs-v11-26-41b81947ecb5@kernel.org>

On Thu, Aug 22, 2024 at 02:15:29AM +0100, Mark Brown wrote:
> Provide a new register type NT_ARM_GCS reporting the current GCS mode
> and pointer for EL0.  Due to the interactions with allocation and
> deallocation of Guarded Control Stacks we do not permit any changes to
> the GCS mode via ptrace, only GCSPR_EL0 may be changed.
> 
> Reviewed-by: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
> Signed-off-by: Mark Brown <broonie@kernel.org>

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>