[PATCH v10 21/40] arm64/gcs: Implement shadow stack prctl() interface

[Mark Brown]

On Wed, Aug 21, 2024 at 01:54:33PM +0100, Catalin Marinas wrote:

> Otherwise it looks fine.

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

I've also added:

+
+       /* Ensure we remember GCSPR_EL0 if we're disabling. */
+       if (task_gcs_el0_enabled(current))
+               current->thread.gcspr_el0 = read_sysreg_s(SYS_GCSPR_EL0);

to handle the disable case.
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