Comment 1 for bug 1906255

Since "s390: fix fpu restore in entry.S" is needed to fix "s390: remove critical section cleanup from entry.S" and "s390: remove critical section cleanup from entry.S" got introduced with kernel 5.8, this affects kernel 5.8 only - and with that only groovy and later.

And since "s390: fix fpu restore in entry.S" landed upstream in linux-next (with 'next-20201124' and '5.10-rc5) and got also tagged for 5.8 stable ("Cc: <email address hidden> # 5.8"),
this ticket is just a tracker to make sure the fix is really picked up by the kernel team
with a future LP bug like "Groovy update: v5.8.? upstream stable release".