[PATCH v7 0/4] MIPS: page fault handling optimization

[Bibo Mao <maobibo@loongson.cn>]

V7:
- define function flush_tlb_fix_spurious_fault as inline rather
  than macro
V6:
- Add update_mmu_tlb function as empty on all platform except mips
  system, we use this function to update local tlb for page fault
  smp-race handling
V5:
- define update_mmu_cache function specified on MIPS platform, and
  add page fault smp-race stats info
V4:
- add pte_sw_mkyoung function to implement readable privilege, and
  this function is  only in effect on MIPS system.
- add page valid bit judgement in function pte_modify
V3:
- add detailed changelog, modify typo issue in patch V2
v2:
- split flush_tlb_fix_spurious_fault and tlb update into two patches
- comments typo modification
- separate tlb update and add pte readable privilege into two patches

Bibo Mao (4):
  MIPS: Do not flush tlb page when updating PTE entry
  mm/memory.c: Update local TLB if PTE entry exists
  mm/memory.c: Add memory read privilege on page fault handling
  MIPS: mm: add page valid judgement in function pte_modify

 arch/mips/include/asm/pgtable.h | 37 +++++++++++++++++++++++++++++++++++--
 include/asm-generic/pgtable.h   | 33 +++++++++++++++++++++++++++++++++
 mm/memory.c                     | 30 ++++++++++++++++++++++--------
 3 files changed, 90 insertions(+), 10 deletions(-)

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1.8.3.1