Re: FAILED: patch "[PATCH] powerpc: Don't try to copy PPR for task with NULL pt_regs" failed to apply to 5.4-stable tree

On 4/3/23 2:40?AM, gregkh@linuxfoundation.org wrote:

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

PF_IO_WORKER doesn't exist before 5.10-stable, so we don't need to backport this patch to older version. You can drop this one, and the ones for 4.x.