Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

Pull sparc changes from David S Miller:
 "There is an attempt to fix a bad interaction between syscall tracing
  and force_successful_syscall() from Al Viro, but it needs to be redone
  as it introduced regressions and thus had to be reverted for now.

  Al is working on an updated version.

  But what we do have here are some significant bzero/memset
  improvements for Niagara-4.  An 8K page can be cleared in around 600
  cycles, because we essentially have a store that behaves like
  powerpc's dcbz that we can actually make real use of."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  Revert strace hiccups fix.
  sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy.
  sparc64: Fix strace hiccups when force_successful_syscall() triggers.
  sparc64: Rearrange thread info to cheaply clear syscall noerror state.

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