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From: Alan Cox <alc@FreeBSD.org>
Date: Wed, 27 Jan 2010 18:33:22 +0000 (UTC)
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Subject: cvs commit: src/sys/i386/i386 pmap.c
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alc         2010-01-27 18:33:22 UTC

  FreeBSD src repository

  Modified files:
    sys/i386/i386        pmap.c 
  Log:
  SVN rev 203085 on 2010-01-27 18:33:22Z by alc
  
  Optimize pmap_demote_pde() by using the new KPTmap to access a kernel
  page table page instead of creating a temporary mapping to it.
  
  Set the PG_G bit on the page table entries that implement the KPTmap.
  
  Locore initializes the unused portions of the NKPT kernel page table
  pages that it allocates to zero.  So, pmap_bootstrap() needn't zero
  the page table entries referenced by CMAP1 and CMAP3.
  
  Simplify pmap_set_pg().
  
  MFC after:      10 days
  
  Revision  Changes    Path
  1.660     +16 -22    src/sys/i386/i386/pmap.c