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From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 27 Feb 2010 18:45:32 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/i386/i386 pmap.c
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alc         2010-02-27 18:45:32 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/i386/i386        pmap.c 
  Log:
  SVN rev 204424 on 2010-02-27 18:45:32Z by alc
  
  MFC r203085
    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().
  
  Revision    Changes    Path
  1.594.2.28  +16 -22    src/sys/i386/i386/pmap.c