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From: Colin Percival <cperciva@FreeBSD.org>
Date: Thu, 25 Nov 2010 22:06:07 +0000 (UTC)
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Subject: cvs commit: src/sys/i386/xen pmap.c
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cperciva    2010-11-25 22:06:07 UTC

  FreeBSD src repository

  Modified files:
    sys/i386/xen         pmap.c 
  Log:
  SVN rev 215844 on 2010-11-25 22:06:07Z by cperciva
  
  Revert r215819 and fix the bug properly.  In pmap_qremove, paging table
  updates were being queued by pmap_kremove, but the queue wasn't being
  flushed; as a result, the updates didn't happen until *after* the call
  to pmap_invalidate_range, and old entries could stick around in the TLB.
  Adding a PT_UPDATES_FLUSH() call immediately before pmap_invalidate_range
  ensures that after the invalidation the TLB will be repopulated with the
  correct new entries.
  
  Thanks to:      kib, avg, alc
  
  Revision  Changes    Path
  1.54      +1 -12     src/sys/i386/xen/pmap.c