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Date: Wed, 6 Nov 1996 19:05:30 -0800 (PST)
From: Bruce Evans <bde>
Message-Id: <199611070305.TAA20036@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-sys
Subject: cvs commit:  src/sys/i386/isa vector.s
Sender: owner-cvs-sys@FreeBSD.ORG
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bde         96/11/06 19:05:29

  Modified:    sys/i386/isa  vector.s
  Log:
  Don't switch from fast interrupt handlers to normal interrupt
  handlers if interrupts are nested more than a few (3) deep.  This
  only reduces the maximum nesting level by 1 with the standard
  drivers unless there is a related bug somewhere, but can't hurt
  much (the worst case is returning to hoggish interrupt handler like
  wdintr(), but such interrupt handlers hurt anyway).
  
  Fixed a previously harmless race incrementing the interrupt nesting
  level.
  
  This should be in 2.1.6 and 2.2.
  
  Revision  Changes    Path
  1.23      +8 -4      src/sys/i386/isa/vector.s