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From: Peter Grehan <grehan@FreeBSD.org>
Date: Wed, 4 Feb 2004 05:16:21 -0800 (PST)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/powerpc/powerpc pmap.c
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grehan      2004/02/04 05:16:21 PST

  FreeBSD src repository

  Modified files:
    sys/powerpc/powerpc  pmap.c 
  Log:
  Remove pmap_pvo_allocf zone alloc function. It was a way of
  using the direct-mapping of physmem to force PTE data structures
  to be physically addressable so the interrupt-time real-mode
  DSI trap handler could perform PTE spills. However, the memory
  may have been > 256Mb, which would have caused a BAT spill and
  double-interrupt.
  
  The new trap code no longer handles PTE spills, so the requirement
  that these pages be direct-mapped no longer applies. The irony is
  UMA_MD_SMALL_ALLOC will return direct mappings for these structs :-)
  
  Revision  Changes    Path
  1.69      +4 -27     src/sys/powerpc/powerpc/pmap.c