Pull s390 fixes from Vasily Gorbik:
- Map vdso also for statically linked binaries like all other
architectures.
- Fix no .bss usage compile-time check to account common objects with
the help of binutils size tool. Top level Makefile change acked-by
Masahiro.
- A fix to make perf happy with _etext symbol type.
- Fix dump_pagetables which is broken since p*d_offset implementation
change to comply with mm/gup.c expectations.
- Revert memory sharing for diag calls in protected virtualization,
since this is not required after all.
- Couple of other minor code cleanups.
* tag 's390-5.3-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/vdso: map vdso also for statically linked binaries
s390/build: use size command to perform empty .bss check
kbuild: add OBJSIZE variable for the size tool
s390: put _stext and _etext into .text section
s390/head64: cleanup unused labels
s390/unwind: remove stack recursion warning
s390/setup: adjust start_code of init_mm to _text
s390/mm: fix dump_pagetables top level page table walking
s390/protvirt: avoid memory sharing for diag 308 set/store