Merge tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - add SSP support

 - add KASAN support

 - improvements to xtensa-specific assembly:
    - use ENTRY and ENDPROC consistently
    - clean up and unify word alignment macros
    - clean up and unify fixup marking
    - use 'call' instead of 'callx' where possible

 - various cleanups:
    - consiolidate kernel stack size related definitions
    - replace #ifdef'fed/commented out debug printk statements with
      pr_debug
    - use struct exc_table instead of flat array for exception handling
      data

 - build kernel with -mtext-section-literals; simplify xtensa linker
   script

 - fix futex_atomic_cmpxchg_inatomic()

* tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa: (21 commits)
  xtensa: fix futex_atomic_cmpxchg_inatomic
  xtensa: shut up gcc-8 warnings
  xtensa: print kernel sections info in mem_init
  xtensa: use generic strncpy_from_user with KASAN
  xtensa: use __memset in __xtensa_clear_user
  xtensa: add support for KASAN
  xtensa: move fixmap and kmap just above the KSEG
  xtensa: don't clear swapper_pg_dir in paging_init
  xtensa: extract init_kio
  xtensa: implement early_trap_init
  xtensa: clean up exception handling structure
  xtensa: clean up custom-controlled debug output
  xtensa: enable stack protector
  xtensa: print hardware config ID on startup
  xtensa: consolidate kernel stack size related definitions
  xtensa: clean up functions in assembly code
  xtensa: clean up word alignment macros in assembly code
  xtensa: clean up fixups in assembly code
  xtensa: use call instead of callx in assembly code
  xtensa: build kernel with text-section-literals
  ...

diff --cc Documentation/features/debug/KASAN/arch-support.txt
index f377290fe48eef50afbc5c9e49f94d7c646d8c6c,8abb013db8d168862f3e38ab34494c5d6c513356..3406fae833c3c958051a0c2c8a1c7321d6dd7503
--- 1/Documentation/features/debug/KASAN/arch-support.txt
--- 2/Documentation/features/debug/KASAN/arch-support.txt
+++ b/Documentation/features/debug/KASAN/arch-support.txt
@@@ -34,6 -34,6 +34,6 @@@
      |        tile: | TODO |
      |          um: | TODO |
      |   unicore32: | TODO |
 -    |         x86: |  ok  |
 +    |         x86: |  ok  | 64-bit only
-     |      xtensa: | TODO |
+     |      xtensa: |  ok  |
      -----------------------

diff --cc arch/xtensa/Kconfig
Simple merge

diff --cc arch/xtensa/include/asm/thread_info.h
Simple merge

diff --cc arch/xtensa/platforms/iss/console.c
Simple merge

diff --cc arch/xtensa/platforms/iss/network.c
Simple merge