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From: Steve Passe <fsmp@FreeBSD.ORG>
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Date: Wed, 23 Jul 1997 14:25:32 -0700 (PDT)
Message-Id: <199707232125.OAA19082@freefall.freebsd.org>
To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG
Subject: cvs commit: src/sys/i386/isa apic_ipl.s
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fsmp        1997/07/23 14:25:31 PDT

  Modified files:
    sys/i386/isa         apic_ipl.s 
  Log:
  Fixed possible deadlock from recursive INTs on same cpu.  Since
  we use lazy masking INTREN()/INTRDIS() might be called with INTs enabled.
  This means another higher prio INT to the same cpu could attempt to
  re-enter the critical region, but would spin waiting for the lock.  Since
  it is the owner, it would deadlock.
  
  Revision  Changes    Path
  1.9       +9 -3      src/sys/i386/isa/apic_ipl.s