[GIT PULL] x86/asm changes for v4.20

[GIT PULL] x86/asm changes for v4.20

[Ingo Molnar]

Linus,

Please pull the latest x86-asm-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-asm-for-linus

   # HEAD: ec3a94188df7d28b374868d9a2a0face910e62ab x86/fsgsbase/64: Clean up various details

The main changes in this cycle were the fsgsbase related preparatory 
patches from Chang S. Bae - but there's also an optimized 
memcpy_flushcache() and a cleanup for the __cmpxchg_double() assembly 
glue.

 Thanks,

	Ingo

------------------>
Andy Lutomirski (1):
      x86/fsgsbase/64: Fix ptrace() to read the FS/GS base accurately

Chang S. Bae (7):
      x86/fsgsbase/64: Introduce FS/GS base helper functions
      x86/fsgsbase/64: Make ptrace use the new FS/GS base helpers
      x86/fsgsbase/64: Convert the ELF core dump code to the new FSGSBASE helpers
      x86/fsgsbase/64: Factor out FS/GS segment loading from __switch_to()
      x86/segments/64: Rename the GDT PER_CPU entry to CPU_NUMBER
      x86/vdso: Introduce helper functions for CPU and node number
      x86/vdso: Initialize the CPU/node NR segment descriptor earlier

Ingo Molnar (2):
      x86/segments: Introduce the 'CPUNODE' naming to better document the segment limit CPU/node NR trick
      x86/fsgsbase/64: Clean up various details

Mikulas Patocka (1):
      x86/asm: Optimize memcpy_flushcache()

Uros Bizjak (1):
      x86/asm: Use CC_SET()/CC_OUT() in __cmpxchg_double()


 arch/x86/entry/vdso/vgetcpu.c    |   8 +-
 arch/x86/entry/vdso/vma.c        |  38 +-------
 arch/x86/include/asm/cmpxchg.h   |  10 ++-
 arch/x86/include/asm/elf.h       |   6 +-
 arch/x86/include/asm/fsgsbase.h  |  49 +++++++++++
 arch/x86/include/asm/segment.h   |  46 +++++++++-
 arch/x86/include/asm/string_64.h |  20 ++++-
 arch/x86/include/asm/vgtod.h     |  26 ------
 arch/x86/kernel/cpu/common.c     |  24 +++++
 arch/x86/kernel/process_64.c     | 183 ++++++++++++++++++++++++++++++---------
 arch/x86/kernel/ptrace.c         |  28 ++----
 arch/x86/lib/usercopy_64.c       |   4 +-
 12 files changed, 299 insertions(+), 143 deletions(-)
 create mode 100644 arch/x86/include/asm/fsgsbase.h