2 Sep
2024
2 Sep
'24
6:55 p.m.
On Thu, Aug 29, 2024 at 12:27:41AM +0100, Mark Brown wrote:
Add a context for the GCS state and include it in the signal context when running on a system that supports GCS. We reuse the same flags that the prctl() uses to specify which GCS features are enabled and also provide the current GCS pointer.
We do not support enabling GCS via signal return, there is a conflict between specifying GCSPR_EL0 and allocation of a new GCS and this is not an ancticipated use case. We also enforce GCS configuration locking on signal return.
Signed-off-by: Mark Brown broonie@kernel.org
It looks fine to me now.
Reviewed-by: Catalin Marinas catalin.marinas@arm.com