stable backports for arm64 shadow call stack pointer hardening patches

[Greg KH]

On Tue, May 02, 2023 at 11:57:38AM +0200, Ard Biesheuvel wrote:
> Please backport the following changes to stable kernels v5.10 and newer:
> 
> 2198d07c509f1db4 arm64: Always load shadow stack pointer directly from
> the task struct
> 59b37fe52f499557 arm64: Stash shadow stack pointer in the task struct
> on interrupt

These did not apply to 5.10.y, but they applied to newer kernels.

thanks,

greg k-h