mainline inclusion
from mainline-v5.16-rc1
commit 326b567f
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I590ZC
CVE: NA

Intel-SIG: commit 326b567f x86/extable: Tidy up redundant handler functions.

--------------------------------

No need to have the same code all over the place.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210908132524.963232825@linutronix.deSigned-off-by: NLin Wang <lin.x.wang@intel.com>