From: Chris Zankel <chris@zankel.net>
Date: Tue, 19 Aug 2014 00:30:24 +0000 (-0700)
Subject: Merge tag 'xtensa-for-next-20140815' into for_next
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e792290be763932d1b8cdf8a36d7015482a49d07;p=openwrt%2Fstaging%2Fblogic.git

Merge tag 'xtensa-for-next-20140815' into for_next

Xtensa improvements for 3.17:
- support highmem on cores with aliasing data cache. Enable highmem on kc705
  by default;
- simplify addition of new core variants (no need to modify Kconfig /
  Makefiles);
- improve robustness of unaligned access handler and its interaction with
  window overflow/underflow exception handlers;
- deprecate atomic and spill registers syscalls;
- clean up Kconfig: remove orphan MATH_EMULATION, sort 'select' statements;
- wire up renameat2 syscall.

Various fixes:
- fix address checks in dma_{alloc,free}_coherent (runtime BUG);
- fix access to THREAD_RA/THREAD_SP/THREAD_DS (debug build breakage);
- fix TLBTEMP_BASE_2 region handling in fast_second_level_miss (runtime
  unrecoverable exception);
- fix a6 and a7 handling in fast_syscall_xtensa (runtime userspace register
  clobbering);
- fix kernel/user jump out of fast_unaligned (potential runtime unrecoverable
  exception);
- replace termios IOCTL code definitions with constants (userspace build
  breakage).

Signed-off-by: Chris Zankel <chris@zankel.net>
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