mainline inclusion
from mainline-5.12-rc1
commit 16a660ef
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5EUVD
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16a660ef7d8c89787ee4bf352458681439485649

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

With NOPs padding, x64 jit now can handle the jump cases like
bpf_fill_maxinsns11().
Signed-off-by: NGary Lin <glin@suse.com>
Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210119102501.511-3-glin@suse.com
(cherry picked from commit 16a660ef)
Signed-off-by: NWang Yufen <wangyufen@huawei.com>