On Wed, Aug 21, 2024 at 01:54:33PM +0100, Catalin Marinas wrote:
> Otherwise it looks fine.
> Reviewed-by: Catalin Marinas
I've also added:
+
+ /* Ensure we remember GCSPR_EL0 if we're disabling. */
+ if (task_gcs_el0_enabled(current))
+ current->thread.gcspr_el0 = re
On Thu, Aug 01, 2024 at 01:06:48PM +0100, Mark Brown wrote:
> Implement the architecture neutral prtctl() interface for setting the
s/prtctl/prctl/
> +int arch_set_shadow_stack_status(struct task_struct *task, unsigned long arg)
> +{
> + unsigned long gcs, size;
> + int ret;
> +
> + i
Implement the architecture neutral prtctl() interface for setting the
shadow stack status, this supports setting and reading the current GCS
configuration for the current thread.
Userspace can enable basic GCS functionality and additionally also
support for GCS pushes and arbitrary GCS stores. It
