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arm64 fixes:

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- Updated the page table accessors to use READ/WRITE_ONCE and prevent
   compiler transformation that could lead to an apparent loss of
   coherency
 
 - Enabled branch predictor hardening for the Falkor CPU
 
 - Fix interaction between kpti enabling and KASan causing the recursive
   page table walking to take a significant time
 
 - Fix some sparse warnings
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 "The bulk of this is the pte accessors annotation to READ/WRITE_ONCE
  (we tried to avoid pushing this during the merge window to avoid
  conflicts)

   - Updated the page table accessors to use READ/WRITE_ONCE and prevent
     compiler transformation that could lead to an apparent loss of
     coherency

   - Enabled branch predictor hardening for the Falkor CPU

   - Fix interaction between kpti enabling and KASan causing the
     recursive page table walking to take a significant time

   - Fix some sparse warnings"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: cputype: Silence Sparse warnings
  arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
  arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
  arm64: Add missing Falkor part number for branch predictor hardening
This commit is contained in:
Linus Torvalds 2018-02-17 09:46:18 -08:00
commit 74688a02fa
17 changed files with 448 additions and 406 deletions
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