Re: [PATCH v11 26/39] arm64/ptrace: Expose GCS via ptrace and core files

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